Whats needed for 300-330bhp
 

Hya,

I juat bought a 1994 wrx import, I have been told these run 240bhp already, what would it take to get it to 300-330 bhp.

Thanks mark

Decat,uprated fuel pump,ecu change (either a complete replacement or PolarPerformance chip),better intercooler,bigger injectors.

280 easy with just a decat and polar performance chip.
300+ needs 440cc injectors, ideally a FMIC and either an ESL live map board or possibly one of andy stevens (AKA ESL) 440cc/fmic maps setting boost with a dawes device to 1.3 bar for a more risky on a budget attempt at 300+.

Hya,

Thanks for your advice guys, could anybody tell me what the gearbox is limited too (mph) its a 1994 wrx import.

thanks mark

Mine broke at approx 330 brake, but it's the torque you need to worry about. Mine runs a little less power now just to conserve the tranny.

Oops miss read that, drive and see how fast it goes :)

Hya,

ok will do, I have only owned it 2 weeks its was ok when I got it and then I put bp ultimate in and it runs like ****e, black smoke and cuts out. So Iam going to brim it with v-power and see what happens then i will take it for a good blast.

I didnt think bp ultimate would be so much of a problem but it does. it is 97 ron. v-power 99 this most be the problem

thanks mark

i put bp ultimate in my old classic once, never again!!

8000 rpm in fifth =154 on srt timing gear which was nearly 170 on the car speedo.

You really do not need a FMIC! This will make your car laggy! There 101 threds on here about people making mistakes with getting one when they only want 300-350bhp

And do not use a dawes device!:razz:

You want to go for 320bhp really mate or u may be looking at a new gear box.

You need a my97 upwards TMIC (you can get these for £30)
440cc or even better 550 cc injectors (£80-£200 2nd hand)
Decat down pipe (should be able to get one for £100)
And get an ESL remap from PolarPerformance (think there about £450?)

Not 100% needed for this power but an up rated fuel pump at £80 to maybe?

Safe £100 aside as you may find when you turn up your boost your coil pack may not live up to the new amount of power?

This will make your car alot better then it is now but..... You will need some stopping power for all that power! Don't forget:norty:

Hya,

Thanks for that advice it is spot on, at least I know which, direction to go in thanks alot (big help).

Cheers mark

P.s what does the tmic stand for mate, I feel thick now lol

TMIC = Top mounted intercooler
FMIC = Front mounted intercooler

On a 92-96 wrx it's a small slanty intercooler and is the weak point when you look for more power.
If you change this then the gearbox and clutch then become the weak point at around 300lb of torque (330bhp ish).
The engine is good for around 380bhp but every car is different.

The phase1's do not have enough room to fit a good efficient top mount like the STi7> unit so would suggest running a Hybrid FMIC or better.

Combine this with 550 injectors, a Walbro fuel pump, colder grade of spark plug, a decat exhaust system, and a remap/later map sensor OR remap/Dawes device and you should be somewhere near your target :cool:

Yes, I did say Dawes device ;)

What no-one has mentioned here is that we're talking about a near 14 year old car. I don't know what the mileage is, but would suggest not being too ambitious with the power unless funds are available to replace the gearbox at the very least!

ns04

within reason a looked after engine and gearbox aren't a problem..

usual fail points on the older car is the coilpacks and crank/cam sensors..
but obvious spot whilst mapping, if not before.

I have an engine sat at home whcih has 198,000miles on it.. I put 120,000miles of them on it.. I have replaced head gaskets as a precaution.. it still has original turbo (td05) which I ran upto 1.6bar... oh and a gearbox and rear diff with 210,000miles whcih I did 132,000miles of, both engine and box are in full working order. This is a 1996 engine and gearbox. They are no longer in the car due to upgrading.. they are my spares :)

Simon

So being a mapper what mods do you have and much much boost are you running?

I've seen your wagon a few times but only when it's parked up.

Wise words here, much of the talk about FMIC's being 'laggy' is down to incorrect fitment of them (people going round with boost leaks for example without knowing it - its very hard to pick a boost leak up on a FMIC without rolling roading it) and people running them without mapping for it.

For the record the intercoolers which come as standard on these early classics are terrible.

As for a dawes device, nothing wrong with these at all so long as they are set whilst monitoring AFR's and keeping an eye out for engine knocking (i other words mapped for whatever boost you have them set to).

EJ257, wiesco pistons, crower rods, acl bearings, sti3 heads ported and polished, MD321T @ 1.5bar

PPG straight cut gearset, plate rear diff.

Brembo's..

Apexi PowerFC Mafsim, AVC-R, 740cc injectors, Walbro, Fuelab reg, front entry inlet manifold, APS FMIC with custom pipework, MSD, converted to 97coilpack and HT leads.

Revolution 3inch exhaust, H&S 3inch downpipe.. currently standard headers due to tubular cracking after about 80k miles, but Gruppe-s replacements waiting to go on.

Estimate 400bhp/450lb with standard headers, hoping for 450/450 on new gruppe-s headers..

All I can think of off the top of my head.

Simon

Not much then:lol1:

Is that all! With you being a mapper I expected more....:D

Swapping the headers with that spec will give an increase of 50bhp?!

Beats me why anyone would need more than 400/450 in what I assume is a classic!

well i've just had 338bhp and 315ftlb out of my newly modded uk calssic MY00

spec as follows

VF34 Turbo
Decat
Induction kit
Front mount
Uprated spark plugs (kept blowing out the already uprated ones)
(already had) 440cc injectors
Autronics ECU
Walbrough fuel pump

so that sort of spec will do it for you

heres the dyno graph, power does come in later compared to old turbo (td04), but as long as you keep revs up there isn't any lag at all from the front mount, plus on hot days its not feeling sluggish.


http://i14.photobucket.com/albums/a3...ods/wheels.jpg

But iv seen them with bigger top mounts on im sure?

What about better TMIC like the autobann one?

Were is Scott while all of this is going on? He is one man the swears by not using a FMIC for the sort of power this chap is after:nono:

Simon,
I'm very interested in the spec of this car as its almost identical to a build that I am currently aquiring the bits for. Just out of interest when are you getting 1 bar of boost, and then full boost on this set up? Can you also remember where you got your heads ported and polished and roughly how much it cost?
Have the heads sat here now, so probably would not hurt getting the headwork done while I wait around for a UK 6 speeder to come on the market for reasonable cash.

In your opinion what is porting and polishing worth on this spec above just bolting on the standard sti3/4 heads?
cheers
will

If you don't want to spend a fortune.....

I bought a 94 import WRX, a few mods. Nur spec R middle and back box. Induction kit, fuel cut device and an AVCR. When put on the rollers as the bloke I bought it off recond it wwas 300 bhp. It was quick but I didn't think 300 quick. It was actually 260.

The only mod I added to get over 300 was a Simtec Sigma ECU from Steve Simpson Motorsport. Which gave me 303 and 265 torque.

I have since stripped off just about every thing and replaced all bolt on goodies to make it 312/ 295. So loads of money for a little improvement really.

If I was to buy another scoob it would have to be a typr R or RA. With the same mods on one of those I would be nearer 400 than the 300 I have now.

The gearing on mine in 5th is at 3500 70 mph, 4000 80mph......up to 7000 140mph. Is this standard on a WRX? Obviously clock speed not confirmed.

Do they make 'better' intercoolers lol

I've fitted an STi7 tmic by changing to a later style manifold and I've seen an STi7 tmic fitted with half the bulkhead cutaway, nice tidy job but a lot of work.

Im looking forward to bringing my car to you next week :)

Look here















<------------- ;)

That graph is for AFR's and boost, not BHP & torque ;)

oops wrong one lol

http://i14.photobucket.com/albums/a3...20mods/fly.jpg

try that lol

It's only a road car.. ;)

the power flat lines at 5.2k up.. expecting the headers to stop that..
haven't had time to put it on RR to check.. just going by seat of pants..

forgot the DCCD.. suspension change.. anti roll bars.. :)