Gear Head

iTrader: (2)

I have an sti 4 which is standard apart from a H&S decat system and uprated ebc discs and pads. It was rolling roaded at PE and produced 293bhp/253lb/ft of torque. That was before the decat too!
I want to increase the power, but its the extra 'driveability' that i'm after. I don't want to fit a bigger turbo that is going to take an eternity to spool up.

Would my VF24 be ok for roughly 330bhp/330ft/lbs? If yes, then i'll just consentrate on extra cooling and an apexi fc.

Cheers peeps

ZEN Performance

TD05-16g with front entry conversion

tweenierob

Agreed, or maybe an 18G with less boost?

Either way, the person above can supply what you need

Rob

Gear Head

iTrader: (2)

The 16G is tempting. With the turbo (exchange) and apexi fc from andy f, that comes to around £1000. Will I need other supporting mods such as fuel pump/reg etc? As I said, i'm not aiming above 350bhp, as this starts to cost mega bucks.

Aztec Performance Ltd

iTrader: (234)

Fuel pump, FPR, intercooler, filter...

then consider bits that may or may not last that long; clutch, gearbox

Does the V4 use 2-pots? If so, a brake upgrade would be a good idea.


Or you could go for 300-330bhp on your existing turbo and keep the costs down.

X SOOOBY

when i had a vf24 decat front mount 440 fuel reg walbro with a remap i had 332bhp/321lb and it flew i did a 12.8/104 at the pod
from what i can see you probably only need a front mount and remap to get what you want

Tim W

iTrader: (1)

Sti 4's should have 4 pot calipers

Gear Head

iTrader: (2)

Yes, I do have 4 pots, with ebc discs and red stuff pads. Was trying to avoid the front mount intercooler route, not keen on chopping my bumper to bits + having extra lag. However I do understand that by reducing the inlet temps, I gain power anyway.

Andy.F

I'd keep the VF24 and fit an Sti 7-9 TMIC and uprated fuel pump, then remap via an ECU of your choice This will make for a very quick road car with plenty midrange.
You may get another 10-15 bhp from the TD05 although it will be around 200-300 rpm later coming on boost.

Andy

Gear Head

iTrader: (2)

Thanks for the advice andy, thats what I like to hear! Hows yourself and your motor??
Not to bad I hope?
How hard are the 7-9 sti topmounts to fit? My Father and I run our own ForkLift Truck Firm, eg; hire, repair, service etc. So I have access to all kinds of engineering resources.

Andy.F

I'm fine thanks, car just needs the rear 1/4 pulling out, the rest is just bolt on stuff.

If you look at Grahams (911) project thread, he has done the later Sti swap.

http://bbs.scoobynet.co.uk/showthread.php?t=390094

Might be of use ?

Andy

ZEN Performance

If you want over 330hp, then choose your rolling road first. Perhaps get a baseline on a dynodynamics rolling road or you may be dissapointed further down the line.

Paul

Gear Head

iTrader: (2)

To be honest, I just want the car to feel ballistic out of the corners. I'm not looking to achieve a certain figure, just as long as I can feel the difference. I doubt the de-cat has given much of an increase in power on the dyno, but I can 'feel' the difference.

Gear Head

iTrader: (2)

Looks abit too 'messy' for my liking, (no offense 911!), maybe aquamist combined with a larger intercooler scoop would be as effective??