25 Bhp - Where To Get

[Toby]

apart from the basics like inhaling more air and expelling more gases, what other under bonnet mods can you do to get 25bhp from the 4efe engine without destroying the car? And where can i look to get them, cheers tobs. 100 bhp (only 75 now!!!) is much more insurance friendly than a 4efte conversion and a glanza.

[Firthy]

Toby read this, i copied into my notes part a while ago from a thread hope it helps

this question has been asked loads of times

u have lots of options when it comes to modifying your ep91

if you look round this site ull find all the info u need just spend some time and use the search engine.

this is what i would recomend from a preveius post

start off with an airfilter...there are loads to choose from.

you dont necisarily need to lengthen the induction pipe. an uprated cone filter can be mated to the throttle body then a couple of cold feed pipes can be directed from the fornt of the car to the airfliter like mine. the induction roar form this mod is well fruity

this can ad upto 3-5bhp

next get a ree flowing exhaust..prefrable a custom one...have the bore increased about 1/4 of an inch over standard.. no bigger then this or you run the risk of loosing precius backpressure (torque) get rid of the cat..but only do this if the place thats fitted the custon exhaust will put your cat back free of charge on come mot time.

loosing the cat can ad about antoher 3-5bhp. a full straight throgh could ad about 7bhp

then...i would consider getting a throttlebody off the turbo or fhe..and mabe a pwer boost valve.

because your car can now breath more easily and expel gases alot quicker..the throttlebody+pbv will supply more fuel to the mix.

u should see subsantial gains after this mod...

then and only then fit a super chip to make sure everythings runnin right.

u should be happy with the results of these mods and your car will be substantualy quicker.

u want more... cams r the way to go but be warned they make the little engine alot peakier in power delivery and u loose bottom end torqu at the same time. not realy recomended on a tiny 1.3.

thats about all that can be done to the 4e-fe without spendin wads of cashola.

if i was u id translplant a 5e engine..(1.5)like me. its a cheap straight forward mod thats friendly on insurance too and u get instandant power gains with out all that screwin about (25-30bhp)

[Toby]

cheers mate, havn't seen that post for a while, although the bhp increases sound a little unrealistic!!!!

[Firthy]

Well havent done any of it, must give you a bit extra though?

[starletsr]

Didnt really feel must bhp increase with just putting an induction kit in lol. But it sounds nice on high revs.