Compressor Dyno And Track Weekend

[chrisio]

Well I finally got the Compressor on the dyno.

I attended a dyno shoot out primarily for American cars but as mine is broken I used my slot.

The dyno was at Weston Performance near Birmingham who use a Dyno Dynamics unit in an enclosed climate controlled cell.

So, we tried everything we could and the best we could manage was 201bhp at the flywheel ;)

So much for 215bhp

Bearing in mind the intake snorkel is off and I have a panel filter fitted I was disappointed to say the least

One interesting thing though was that the boost started dropping off at around 4000rpm although the power was climbing.

It's as if the supercharger clutch had disengaged at high revs. What's all that about then?

Ok then, on the Sunday I went to the end of season RWYB at Shakespeare County Raceway near Stratford-on-Avon.

Rule #1. Don't try and launch like a RWD which I normally use.

The front end banged and bumped with driveshafts tramping off the line and the best I could get was a 16.9sec at 88mph. Not good at all :(

Gentler, more controlled launches throughout the day resulted in a best of 15.2sec at 93mph.

A bit better but there is no way could we get the car quicker, it just wasn't going to happen.

Food for thought

[tsportkid]

Well I finally got the Compressor on the dyno.

I attended a dyno shoot out primarily for American cars but as mine is broken I used my slot.

The dyno was at Weston Performance near Birmingham who use a Dyno Dynamics unit in an enclosed climate controlled cell.

So, we tried everything we could and the best we could manage was 201bhp at the flywheel ;)

So much for 215bhp

Bearing in mind the intake snorkel is off and I have a panel filter fitted I was disappointed to say the least

One interesting thing though was that the boost started dropping off at around 4000rpm although the power was climbing.

It's as if the supercharger clutch had disengaged at high revs. What's all that about then?

Ok then, on the Sunday I went to the end of season RWYB at Shakespeare County Raceway near Stratford-on-Avon.

Rule #1. Don't try and launch like a RWD which I normally use.

The front end banged and bumped with driveshafts tramping off the line and the best I could get was a 16.9sec at 88mph. Not good at all :(

Gentler, more controlled launches throughout the day resulted in a best of 15.2sec at 93mph.

A bit better but there is no way could we get the car quicker, it just wasn't going to happen.

Food for thought

I am sure I have downloaded a catalogue on the compresssor which quotes 225ps although I thought the comp has 215 ps? :( Should be putting out more than 201hp. Does it feel alot quicker than a t sport?

[GreyRacer]

Just as a matter of interest were you using Super Unleaded?

[chrisio]

In reply to your questions, it does feel quicker than my old T-Sport and I am using Shell V-Power ;)

225ps is around 215bhp so that's what I am basing my figures on.

I might see if I can mail TTE to see if this supercharger 'switching off' is correct.

[PaulT]

Gentler, more controlled launches throughout the day resulted in a best of 15.2sec at 93mph.

I did 15.3 in the CTS comfortably at Santa Pod. And that was with the usual water on the line and plenty of wheelspin and unleaded 95 :D

The Compressor has fatter tyres, which might sap a bit of power, but I would still have expected more. Is the supercharger clutch broken?

Paul.

[Jones~32]

201?

Didn't someone else off here with a Compressor get 230 on the dyno?

[chrisio]

201?

Didn't someone else off here with a Compressor get 230 on the dyno?

I'd like to know who.

I just e-mailed TTE so lets see what they have to say.

Watch this space ;)

[T128]

chrisio if i were you i take the car back to toyota dealer where you purchase the car from and ask them why the car isn't producing anywhere near 215 bhp, if you don't get anywhere just leave and contact toyota GB then they will ask the toyota dealer you took your car in to make a full report on the problem or they might just send there own engineer from toyota GB to look in to this either way they have to sort it out for you.

i didn't want to say it but after i been in your car i didn't think the corolla compressor was all that much faster than the tsport it just didn't do it for me,some people might say it is the smoothest of the supercharger but i have to disagree,there just isn't a big power there to leave a tsport at all and if my tunning knowlege are correct next year when i added Tom's & TRD part's i must be in with a good chance beating one :D

[chrisio]

i didn't want to say it but after i been in your car i didn't think the corolla compressor was all that much faster than the tsport

I wish you had

It's been a few years since I had a T-Sport so I had nothing to compare it to.

Obviously my particular car does not appear to have much more power than a stock T-Sport although it pulls strong in the mid-range.

Lets see if TTE get back to me and if not then I go back to the dealer.

[T128]

same here would of love to give you a run that day but the car was out shopping where it normaly goes in the afternoon :D ,but there is always 2007 on santa pod :D :D :D

your car does pull faster than my tsport at pull away low rev's to mid-range but nothing like what i was expected from a fast supercharge, when i need to go fast i wont be anywhere near low rev's or mid range from pull away i'll be launching at high rev's which will cancil out the time it need to get to 6200rpm and after that will be on lift every gear's on full power,finger cross you do have a problem otherwise you talking to a very confident tsport player :D .

[nrgizerbunny]

225 Pferdestärke is approximately 220hp. 1PS =0.98HP

might have an answer for the other issue.

The supercharger works on fixed pressure ratios, so if you put 1 bar in and it has a pressure ratio of 2, you'll get 2 bar out.

the only thing to note is, there will be a vacuum in the inlet manifold and as the engine speed increases, the vacuum may or may not (depending on valve timing) get worse, hence you'll register less boost.

[tsportkid]

225 Pferdestärke is approximately 220hp. 1PS =0.98HP

might have an answer for the other issue.

The supercharger works on fixed pressure ratios, so if you put 1 bar in and it has a pressure ratio of 2, you'll get 2 bar out.

the only thing to note is, there will be a vacuum in the inlet manifold and as the engine speed increases, the vacuum may or may not (depending on valve timing) get worse, hence you'll register less boost.

Not enough to drop 19bhp!

[chrisio]

Still no reply from TTE

The thing is that a screw type supercharger should continually build boost , the maximum governed by the diameter of the pulley and the engine revs.

I don't like or understand the reason behind the clutch disengaging ;)

If TTE can't be @rsed to reply then it's back to the dealer for an official complaint next week.

[Bodgit]

Still no reply from TTE

The thing is that a screw type supercharger should continually build boost , the maximum governed by the diameter of the pulley and the engine revs.

I don't like or understand the reason behind the clutch disengaging ;)

If TTE can't be @rsed to reply then it's back to the dealer for an official complaint next week.

I feel for you on this one. When I owned my Astra GSI it was down on power. I had a terrible time trying to get them to take me seriously. Yes I know it's a different manufacturer. I was told at one point that all engines regardless of manufacturer were allowed a tolerance on power of +/- 10%. I just hope they dont pull that one on you.

It's very difficult when you own specialist cars. The Astra was finished in a different factory much like the process the compressor goes through. I was even told at one point I had problems as I was driving it too hard. I am yet to see how I could drive a car tested round the Nurnburgring too fast on the roads around Milton Keynes. They eventually took it back repaired it, not telling me exactly what was wrong.

I had it rolling roaded again and it was pushing more BHP and had higher torque figure than those who had tuned theirs.

I guess the point I am trying to reach is the compressor is a good car stick with it but dont let them take the ...

[T128]

tte should try and help you out but is isn't a item sold by tte so they dont have to reply you,the supercharger you have is a toyota part doesn't matter if was made by tte it is still a toyota part.

yes you should a full complaint to toyota i mean you pay for 215bhp then you car should run on 215bhp simple.

[chrisio]

Although I wrote to TTE it was Toyota customer services who wrote back.

Basically they said that if the car had anything less than super unleaded put in it, the the ECU would revert to 'safe mode' and could only be reset by the dealer. Putting super in would not reset it alone. I have only ever used super but who knows what the dealer filled it with....

Interesting that they recomend Shell V-Power and also, wait for it, Tesco super unleaded!

I sent a reply saying they still did not explain the drop-off of boost and am still waiting for the reply.

However, thinking about it, if the ECU has gone into safe mode, maybe it is disconnecting the supercharger before any damage occurs under boost.

Might go to the dealer anyway while I am waiting for my reply and get the ECU reflashed before putting it on the dyno again.

Oh, Toyota also stated that there was only one tune for the Compressor and were quite adamant that there was no 'special' tune available ;)

[215 compressor]

Although I wrote to TTE it was Toyota customer services who wrote back.

Basically they said that if the car had anything less than super unleaded put in it, the the ECU would revert to 'safe mode' and could only be reset by the dealer. Putting super in would not reset it alone. I have only ever used super but who knows what the dealer filled it with....

Interesting that they recomend Shell V-Power and also, wait for it, Tesco super unleaded!

I sent a reply saying they still did not explain the drop-off of boost and am still waiting for the reply.

However, thinking about it, if the ECU has gone into safe mode, maybe it is disconnecting the supercharger before any damage occurs under boost.

Might go to the dealer anyway while I am waiting for my reply and get the ECU reflashed before putting it on the dyno again.

Oh, Toyota also stated that there was only one tune for the Compressor and were quite adamant that there was no 'special' tune available ;)

when i first road tested my compressor the salesman had put ordinary unleaded in it and when we got back i said i wasnt impressed with its performance .another salesman asked his coleague wot fuel he,d put in and then relised why the lack of power i then came back later after changing fuel and into work shop for ecu resetting and it was a different car.i ve tried different fuels and have found the tesco superunleaded is the best at 99 octane and one of the cheapest .

my compressor going into mr t this week after 8k on clock sound like baffles have dropped in exhaust, gears notchy and crunching in third gear when cold .

[tsportkid]

Although I wrote to TTE it was Toyota customer services who wrote back.

Basically they said that if the car had anything less than super unleaded put in it, the the ECU would revert to 'safe mode' and could only be reset by the dealer. Putting super in would not reset it alone. I have only ever used super but who knows what the dealer filled it with....

Interesting that they recomend Shell V-Power and also, wait for it, Tesco super unleaded!

I sent a reply saying they still did not explain the drop-off of boost and am still waiting for the reply.

However, thinking about it, if the ECU has gone into safe mode, maybe it is disconnecting the supercharger before any damage occurs under boost.

Might go to the dealer anyway while I am waiting for my reply and get the ECU reflashed before putting it on the dyno again.

Oh, Toyota also stated that there was only one tune for the Compressor and were quite adamant that there was no 'special' tune available ;)

when i first road tested my compressor the salesman had put ordinary unleaded in it and when we got back i said i wasnt impressed with its performance .another salesman asked his coleague wot fuel he,d put in and then relised why the lack of power i then came back later after changing fuel and into work shop for ecu resetting and it was a different car.i ve tried different fuels and have found the tesco superunleaded is the best at 99 octane and one of the cheapest .

my compressor going into mr t this week after 8k on clock sound like baffles have dropped in exhaust, gears notchy and crunching in third gear when cold .

You are going to be compressorless for about a week then! :ffs:

[chrisio]

when i first road tested my compressor the salesman had put ordinary unleaded in it and when we got back i said i wasnt impressed with its performance .another salesman asked his coleague wot fuel he,d put in and then relised why the lack of power i then came back later after changing fuel and into work shop for ecu resetting and it was a different car.i ve tried different fuels and have found the tesco superunleaded is the best at 99 octane and one of the cheapest .

my compressor going into mr t this week after 8k on clock sound like baffles have dropped in exhaust, gears notchy and crunching in third gear when cold .

I suspect the same fuel thing happened to mine :(

Did they sort yours while you waited or was it an all day thing?

I have noticed that the gearbox is notchy sometimes but thought it was my driving

[mensa]

With ref to safe mode, do you think the same would apply to a standard T Sport?

[bert.tsport]

With ref to safe mode, do you think the same would apply to a standard T Sport?

i hope not, as i was never told that i HAD to always use 97 ron. what happens if you cant get it for some reason... :(

[Bodgit]

i am starting to wonder if i should ask for a reset just for piece of mind. after i put in my forst lot of ultimate it never felt the same.

[215 compressor]

With ref to safe mode, do you think the same would apply to a standard T Sport?

i hope not, as i was never told that i HAD to always use 97 ron. what happens if you cant get it for some reason... :(

as far as im aware the t sport can be run on either fuel but if run on the higher octane the ecu will pick up on the the higher octane and increase the ignition timing hence giving increased power well worth it. it must give a marked increase on the t sport when you consider what the effects are in the compressor with the lower octane of the loss of power i would certainly put a couple of tank fulls in and give it a try and i can recommend the tesco super unleaded i wont put any thing else in mine

[tsportkid]

With ref to safe mode, do you think the same would apply to a standard T Sport?

i hope not, as i was never told that i HAD to always use 97 ron. what happens if you cant get it for some reason... :(

as far as im aware the t sport can be run on either fuel but if run on the higher octane the ecu will pick up on the the higher octane and increase the ignition timing hence giving increased power well worth it. it must give a marked increase on the t sport when you consider what the effects are in the compressor with the lower octane of the loss of power i would certainly put a couple of tank fulls in and give it a try and i can recommend the tesco super unleaded i wont put any thing else in mine

Watch what happens to your fuel economy when you start switching fuels all the time. Its best to decice wether you can afford to run yout cts on v power and if you can stick to it. It takes a couple of hundred miles for the ecu to adjust back to the fuel in the tank then get your economy back. I have made the mistake of changing back and fore trying to decide how much of a difference v power makes. Also tried sainsburys 97.

[chrisio]

Reflash booked in for tomorrow morning so lets see how I get on ;)