Rolla Gti Performance Details

[Gti-Racing]

Hey all

May 2004 - Bought my Twinnie and on the way back from Bradford i got a top speed of 134mph out of it, 0-60 roughly 7.5secs bog standard & 0-100 26secs.

June 2004 - bought ASA BBS 16" alloys weighing around 20kg's compared to 15kgs the standards weighed. My top end went down to 129mph ALL OUT.

alloys killed me dry, so i got rid of them.

July 2004 - got some 16" league integralz weighing 15kgs, top end stayed the same 129mph????

July 2004 - Got a lightweight stainless steel thermal research and development exhaust which was for a civic vtec, chopped, remoulded and fitted for 90.00.

Car went down to around 128mph and 0-60 went to around 8.5secs.

August 2004 - Simota racing air filter (cus i was broke) and i didnt install it properly and 0-60 10secs and didnt even attempt top end.

October 2004 - NGK racing HT leads, tuned up air system, Cold air feed from front bumper and the car was Flying once again but still could feel a lot of trapped power.

February 2004 - Bigger cold air feed, 14" Racing Hart alloys with 195/60's weighing 13kgs and around 4 services later the car is finally back to around 7.5 0-60 and the 0-100 is quicker but not sure how much, but it is quite a bit.

My exhaust is now my problem, this exhaust has a BIG bore on the whole system, probably around 1 - 1.5cm bigger then standard, thats been killing me, so im guna go standard with an Apexi N1 muffler and the silencer off my current exhaust (which cost 510.00 all in from USA) Proper wounder but anyways and also guna get a 4-2-1 manifold and ive got the manifold wrap, should DEFINATLY give me a noticeable Gain.

what about Superchips chip 293.45 fitted from the dealers, is it worth it @5hp gains and possibly remappable??

If ive bored everyone to sleep then im sorry :D but if everyone can put your specs and changes and gains/losses i would be most grateful, as i need to beat my mates CRX vtec!!!

thanks

[System~G]

When I bought my GTi it had a really stupid through-flow exhaust system with dual (one each side of car) 4.5" exits and a PiperX induction cone filter (not full kit). The car ran OK - but nothing special (felt quite slow).

The first thing I did was re-fit the stock air box (which had holes drilled out the underside). I noticed imediate improvements on torque, but still didn't feel as nippy as some I had driven in South Africa a few years previously.

The next thing was to get rid of the horrible exhaust. Unfortunately there was no budget for a full system, so I continued to use the 3" custom piping the previous owner fitted and replaced the back box with a Rage SPII (I think) tuneable back box. This allowed direct fitment and created the much needed back-pressure the GTi requires. The GTi's performance was best yet.

Just before I sold the car I ordered a K&N induction kit, but it didn't accept all the air sensors, so I never bothered fitting it. Another story all together and already covered far to many times.

[dawesy]

hi mate, a lot of testing there. i tried the super chips icon , gave a nice boost mid range but not all that much to shout about. it only alters the ignition i beleive. only thing that will give you complete mapping control is a stand alone ecu (apexi power fc, MoTec etc).

best exhaust i found was the mongoose system, nice sound and a noticable improvement in power

[b45h]

Alright people.

I would agree with dawesy the mongoose system is worth the money the car seems to go abit more the car probably seems free up a few more bhp, awesome sound, not too loud as aswell. I think. The exhaust system is from the down pipe back only,

Apart from the exhaust system the other mod on mine is a set of 15" Oz superleggra's they seemed to weigh less than the originals.

[Gti-Racing]

I know what your saying about the mongoose but it is "common" ive seen ENOUGH Twinnies with the mongoose systems, and to be quite honest id rather go for a RARE one, like the HKS Superdrager, But that has a Mild Steel middle, Hard choice, I have decided so far to get an Apexi N1 (150 shipped) and standard as i felt ALOT of power on standard compared to this rubbish i got now.

1 thing i can NEVER UNDERSTAND, why my F Reg Twinnie was MUCH quicker then my current G Reg??? the last one had a 75,000 G reg engine put in with the T-vis and it went like hell, to get 90 in 3rd & 120 in 4th gear was normal, where as this bag of crap i can only get around 115 MAX in 4th!!!

The old one only had a Standard mid section, Powerflow back box, JR direct fitment air induction and that is it!! and i dunno, that one still gets me. Was thinking about getting a Tvis fitted to see what happens? as thats what my last engine had.

Anyways SYSTEM - G, you must be losing ENOUGH power with that 3" bore??serious, cus mines is similar, it just reduces back pressure Humongosly. and takes like a second to really get going and cars have left you for crap by then.

B45h the superleggera's are something i really wanted BAAD, they are BEUTIFUL and LIGHTest 15"z on market, There is better lookers with similar weight though, theres a Buddy Club alloy which is almost as light and also the konig helium, looks better and weighs around the same, not to say your Superleggeras are not WICKED.

But wheels are soo major, hopefully i can get pics of my new 14's soon, they look WICKED in the dark when all you see is a chrome ring going round and nothing else and they weigh JAK!!

Thanks for all your responces guys, hope we get more, and Dawsey, im SURE youve done a "bit" more to your car :D and your the 2nd person to kill off the superchips icon chip and the motec, Apexi power FC and Omex, I WISH, :( , if i could afford it i would but theyre like a grand installed with HUGE gains and potential

[System~G]

Anyways SYSTEM - G, you must be losing ENOUGH power with that 3" bore??serious, cus mines is similar, it just reduces back pressure Humongosly. and takes like a second to really get going and cars have left you for crap by then.

←

Not at all mate ;)

I never had a problem being left behind and the torque was pretty impressive. I kept up with all pulled away from Starlet turbo's (modded and unmodded) on more than one ocasion. I can also say the car was A LOT quicker than my current MKI MR2 (which has the early spec 4A-GE engine in it).

The difference from having a complete through-flow system to what it currently has is huge. I can only think how much more of an improvement it would have been if I had the budget to have replaced the entire system with a Mongoose B)

I was and still am not really into ragging cars (or racing) on public roads.

The new owner of my car may have a bit more experience in this area, so he could possibly comment on what he thinks of it's performance over and above other cars he's driven hard. Conrad? (Kidkoala???) Comments please???

[ae111sr]

Thanks for all your responces guys, hope we get more, and Dawsey, im SURE youve done a "bit" more to your car  :D and your the 2nd person to kill off the superchips icon chip and the motec, Apexi power FC and Omex, I WISH,  :( , if i could afford it i would but theyre like a grand installed with HUGE gains and potential

Motec M4 (the cheapest one will cost you £895 +VAT just to purchase - then it will need to be fitted and mapped - say another £1000 on top. All any programmable ECU can do is optimise the ignition and fuelling for the engine that it's fitted to so huge gains from a normally aspirated 4a-ge are not going to happen. You need some way of getting more air and fuel in the engine (in the correct ratio) to get more power out.

[Twincam.GTi]

Corolla_Gti-r Posted Yesterday, 01:22 AM

 

August 2004 - Simota racing air filter (cus i was broke) and i didnt install it properly and 0-60 10secs and didnt even attempt top end.

Least your honest, the amount of times i've had to sort out/fix/fit properly/tell to get rid of and then explain situation to some kiddie with a 'Chaved up' Corsa, Nova, Punto or Saxo whos slapped on/wrongly fitted a 'so-called' perfomance air filter and thus made the car slower.

Corolla_Gti-r Posted Today, 12:55 AM

But wheels are soo major, hopefully i can get pics of my new 14's soon, they look WICKED in the dark when all you see is a chrome ring going round and nothing else and they weigh JAK!!

Very nice to see that not everybody is obsessed with 'slaming' 17's and 18's on their motor (and in turn make the handling worse!)

The amount of times i've had to explain to some kiddie with a 'chaved up' Corsa,Nova ...etc.,etc.,etc.

[JT]

seeing as you're keen on the mongoose system, give this place a try Blueflame. that's who built the system on my car, and i've heard it's them who manufacture mongoose exhausts. i saw a noticebale improvement mid-range when i had it done

[dawesy]

Very nice to see that not everybody is obsessed with 'slaming' 17's and 18's on their motor (and in turn make the handling worse!)

←

know what you mean. i wish i could make do with smaller brakes so i could run 15's or 16's. but with 350bhp (soon to be about 450) i need the 335mm discs and 6 pots so im afraid 17's are the smallest i can get .

how about a mongoose system with a different tail pipe?.

[Gti-Racing]

WHAT THE HELL DAWSEY!!! your cars on some SERIOUS STEROIDS MAN, :D, hey just for that we have to race, hehehehe, i wouldnt even be able to smell your dust man. I was thinking your exhaust didnt look like a mongoose?

Before i was like if it looked good i liked it, now when i see kitted up cars i think SLOW straightaway, cus if they were into Speed they wouldnt weigh the car down. im more into the function, and 16's 17's and 18's i think are a waste in all aspects, Tyre price wise you will get MURDERED, you will loose alot of power and im sure when you really think hard you will use more petrol, as itll take that little bit extra to move your mota. But as you mentioned Corsa, nova and so owners, ill never understand them, They go for high level tuning and then put BIG ***** SUBS, 18" rims, i dunno weird lot.

but the new rolla philosophy is lightwieght everything

Ive seen the Apexi Power FC at 600 + 300 for fitting, but your right AE11 SR, not worth it on my car considering i have got hardly any mods on it.

JT - thats a Nice site man, will defoz check it out, and ive seen the Jap style 4" backbox that mongoose do which looks PHAT, so might look into that

and i know racing is Baad

<yes it is and that's why I've edited this post>

Edited April 4, 2005 by ae111sr

[Gti-Racing]

Hey what do you think of a Fidanza flywheel?? ive been considering for quite a while, anyone informed about it??

have you seen the Fensport corolla 3sgte video against a Celica GT4, Nove twin Calibra turbo engined, Corsa 350hp, Aston martin??? its a legal race and is about 10mins long, if anyone wants it, PM me your email add and ill send it ya, its a WICKED video and legal.

[Unity Jon]

to be honest i couldnt be bothered to read ALL the posts in here but where people are noticing lack of performance i can see exactly why.

If your exhaust (at any section apart from the tailpipe) is larger then 48mm ID then your stuffed. the 4age with out forced induction does not perform at all with larger pipes. If you get a 2" (50mm) system make sure the guage thickness is 1mm, bewarned, it is hard to find 1mm guage 50mm diameter stainless, I searched for ages and managed to get mine from a metal merchant down south, organised with the powerflow fitters to use my pipe and their boxes and pipe bender, the powerflow pipes are normally 50mm ID which is too big, but common.

changing the manifold is wise if you do alot of motorway driving as it will push the top end up a treat but take the 'power band' up the revs too, The stock 4age manifold on AE92's is near on perfect for a cast manifold with superb flow rates and scavaging capabilities, DONT WRAP A CAST MANIFOLD it will crack under hard driving - i know :(

[Twincam.GTi]

Unity Jon Posted Today, 08:59 AM

  The stock 4age manifold on AE92's is near on perfect for a cast manifold with superb flow rates and scavaging capabilities, 

Yes I've heard that

Unity Jon Posted Today, 08:59 AM

    DONT WRAP A CAST MANIFOLD it will crack under hard driving - i know 

I haven't with any of my vehicles but a lot of friends in local car club have used this 'manifold wrap' ...damage waiting to happen?

Thankyou very much for that warning

[Unity Jon]

it keeps the heat in, warming the gas inside, making it thinner making it flow easier and faster but loosing back pressure (there's always a compromise) but worse it traps the heat in the metal making it expand much quicker and more than its designed to, over time this increased expansion and retraction will result in cracks at weak areas. The stock 4AGE manifold is very thin in some places due to being flowed extremely well and is on its limit pretty much from the factory. Wrappng it, puts it over the limit.

[dawesy]

WHAT THE HELL DAWSEY!!! your cars on some SERIOUS STEROIDS MAN,  :D, hey just for that we have to race, hehehehe, i wouldnt even be able to smell your dust man. I was thinking your exhaust didnt look like a mongoose?

no its a 3" custom system from ascar in sheffield 3 beutiful iches from the turbo to the tail box with a 5" slash cut tail.

if you want a race it'll have to be at the pod but be warned it has done a 13.07 sec 1/4 mile at 110mph. and it'll soon be a whole lot quicker!!!!

[Gti-Racing]

Hey then dawsey, your in for a beating with my badly modified about 120bhp twincam :D hehehe, with your exhaust being 3" its understandable with the huge Power running through.

I was soo eager to put the manifold wrap on, i heard it gives you around 8hp on a corolla gti, but what your saying DEFINATLY makes sence, BUT what about a stainless steel 4-2-1 manifold?? cus as youve now mentioned that, i think i may just stick to just leaving a performance manifold unwrapped.

About the 48mm bored exhaust, you said if you have no induction kit? I do have a performance air filter so do you know if the 48mm applies to me, or would i be ok with something around 2" as the 48mm is 1.889" (near enough 1.9") becuase what your saying and what i felt when i left the garage sounds about right, i kept wacking down the pedal and i was shocked, i just didnt move as prior, and i kept making excuses (you would if youd spent 510.00 on an exhaust and SOO much hassle to get it) but i HATE my exhaust. but if you do know more about the increments on bore compared to mods then the info would be much appreciated.

[KidKoala]

Anyways SYSTEM - G, you must be losing ENOUGH power with that 3" bore??serious, cus mines is similar, it just reduces back pressure Humongosly. and takes like a second to really get going and cars have left you for crap by then.

←

Not at all mate ;)

I never had a problem being left behind and the torque was pretty impressive. I kept up with all pulled away from Starlet turbo's (modded and unmodded) on more than one ocasion. I can also say the car was A LOT quicker than my current MKI MR2 (which has the early spec 4A-GE engine in it).

The difference from having a complete through-flow system to what it currently has is huge. I can only think how much more of an improvement it would have been if I had the budget to have replaced the entire system with a Mongoose B)

I was and still am not really into ragging cars (or racing) on public roads.

The new owner of my car may have a bit more experience in this area, so he could possibly comment on what he thinks of it's performance over and above other cars he's driven hard. Conrad? (Kidkoala???) Comments please???

←

Not had a chance to read this whole thread, busy at work having just moved house and taken a day off.

The corolla is one of the most amusing cars I've driven to date.

It has enough power for you to feel the torque/bump steer in 1st 2nd and 3rd gear.

Its a very under estimated car in my books, I'd say the performance of the engine is similar to what I'd expect from a single cam VTEC CRX.

I've hit 40MPH in 1st, 65 in 2nd, 95 in 3rd, 115 in 4th and 125 in 5th. This was with 3 people in the car however! It was a flat surface, maybe a slight hill.

The power delivery is what amuses me most - keep it under 3.5k RPM and its like driving a normal car, if you shift up the box quickly it still feels nippy. Rev the car past 6k RPM and things get very different, there is a short burst of power from above 6k RPM to 8k RPM (thats where the limiter kicks in!) it feels like a very cammy drive, but theres enough torque lower down the rev range to comfortably drive the car round town!

Fuel economy is a joke if you boot this car - I've been known to get 40 miles from £10 of petrol.

The handling is quite amusing too. You can easily provoke the GTi into useful oversteer with a bit of lift off the gas mid corner. If you are going really fast and you let off the gas, you can start going sideways, careful now though, because if you over correct it expect to start fishtailing, and you could end up facing where you came from.

You can put the car round some real tight corners whilst holding the power down, the more power you give it the more the car understeers, but it is very progressive understeer and you can predict how the car is going to react. The chassis is lovely, you get lots of feedback from the steering, and you can feel when the car is on the edge at all times.

I've only had one sticky situation so far, but it was a very wide road, I entered the corner with way too much speed, the car squatted in the middle of the corner, lost grip, the wheels started spinning up and the car broke away , I fishtailed 3 or 4 times before getting the back end back again - not a nice situation, but certainly gets the blood pumping round your vains!!!

The GTi seems to ***** all over most cars round here of the same era, Golf GTI 16v's, various 205's etc etc...

[Twincam.GTi]

Kidkoala: That just about sums up why I like mine (and have done all these years), although I probabley don't drive it as enthusiastically as you do.

Well said

[KidKoala]

Can't wait to get a lowering kit, adjustable dampers, and a track day pass.

[JT]

im surprised just how easy it is to provoke mine to slide when you lift off (ok, its an AE82, but virtually the same!). and this is with 205 section Toyos fitted, Fensport springs and KYB shockers. im going to change the wheels back soon, just to say what it's like with less grip :D like it's been said though, its progressive - you don't feel as if it will snap (saying that, when my dad had his years ago, he managed to roll it after not being able to catch it sliding, so be careful!)

[KidKoala]

Yeah its nice. It will break away if you slide it on dry tarmac, but you'll have to hit the apex at speed to do that.

It's not pleasent when it does break away, but if you fight it you'll get it back.

[Gti-Racing]

Hey kiddie i agree with TWINCAM GTI, thats a very good description of the car, and 1 extra thing, Everything that happens to the car is in your hands (steering wheel) and your feet with no assistance like the new RUBBISH cars they bring out!!!!

And Fishtailing?? hehehe :D thats happened to me 2times in my last twincam (pic car) and yeah everytime i did end up facing the way i had just came from, 1ce in snow and 1ce in rain and your DAMN RIGHT it gets the blood pumping, hehe my mate nearly Crapped himself!! but i had 2 completely bald tyres cus i couldnt afford new ones :( , but it is the most fun car ive driven, and everyone i know in coventry that buys a corolla gti, has always bought another one, or from an ae82 to a ae92 (same thing) so it is an addictive thing and guess what they are know as in coventry??? aswell as twinnieZ, TwincamZ, they are know as Tin can as if you crash at even 20mph youll be SQUASHED TOMATOES for sure due to the lightweight body :D

[KidKoala]

Heh heh. I hope I never end up facing the other way, that would be a lack of skill on my part. I don't condone bald tyres though mate, how much is your life worth? and everyone elses life? I hope you learnt your lesson on that one.

[Twincam.GTi]

Corolla_Gti-r: You're pic car looks very smart (I like the 5 spoke alloys), what colour is your present car? You must post a pic of its present wheels you were on about.