UK WRX 2005
vf34
Japspeed FMIC
550cc injectors
full decat inc. uppipe
walbro fuel pump
Apexi power intake
3 port
Dynamix remap

Going on the rollers in a couple of weeks but hopefully 5 speed friendly 330bhp ish

 

Your gearbox aint man enough to run a 18G to it's full potential! You are better off with 16G and sitting around the 350 mark.

 

Incorrect figures iirc the rollers were out...

 

theres a chance the rollers were out yea , but until my next map i have 360 bhp but its not for you to say they are incorrect figures ? thats not a fact yet and is quite possible
unless of coarse you work there ?

 

DonNedly. How easy was the japspeed intercooler to fit? Have you got any pictures of it on the car?

 

No i dont work there but a had a few discussions with someone who does. Sounds like you are on the defensive mate, i wasn't trying to have a dig ok so i will just leave it there.


enjoy your car

 

im not on the defensive at all mate ! just not sure why you had to even bring it up and feel the need to correct me on my post thats all ?

 

not wanting to start a war but i agree, the mods u have listed the max u will get is the 340 mark

 

easy to fit if you are happy cutting up your bumper

 

thats fine but dyno results i have on paper say different until then

 

What year was the car/gearbox?

 

Hi mate.

Looking at your rolling road printout I think the flywheel figure may be out. Most use a conversion of 18% for transmission loss from flywheel to road wheel, which has been proved in other threads and tests. This would make your flywheel power 341 bhp.

Still a good result in my opinion. Sorted! Nice car!

 

True, your clutch won't though, when i had mine done on a dyno it started slipping at the end of the session lol, well if its partly worn anyway, something to be aware of choco mate

 

I've got a 2005 STI UK (6 Speed)
FMIC
Walbro 255
Syvecs ECU -Anitlag/launch
SC45 Turbo
3'' Turbo back zorst
GT Spec flowed headers
K&N bumper relocated
Paddle clutch
HKS SSQV BOV
406bhp. 355ft/lbs.

No gearbox issues.

 

07 hawk
Walbro 255,sti tmic,2.5 decatted,20g billet,standard internals and 5 speed box.
Running this for the last 12 months with no problem.
378bhp & 410ft.

 

Cor, bet thats fun!

 

Did the hawk wrx's come with a stronger box than the blobs then? Or isn't the torque delivery as brutal on the 2.5's?

 

This is the man to listen to.

 

From 03 onwards the gears are 1mm thicker on the 5 speed WRX, the old box will $hit at 350hp the newer wrx box should be fine with 400hp with no daft lanuches

 

For a fmic do I need a different dump valve? I still have the standard one.

 

no but you will need an adapter/flange so it can go on a hose fitting.

 

Mmmm okay.. May be worth just getting a forge recirc?

 

Love the way it just keeps on pulling

 

so it should its an sti
the thread is about wrxs NOT stis, everyone knows that the boxes can take 450-500hp all day long

 

Harvey is selling adapters here:
https://www.scoobynet.com/trader-ann...cessories.html

 

how much to get a strong gear kit fitted to 5 spd box ?? as i think thats what i would go for over a second hand sti box ? i think albins do a helical kit for just over 2k 1st to 4th ? how much to install do you think ?

 

Hi Dave personally i like the PPG sound and really you need drive first and then decide if its for you

How much will cost conversion from your standard box to PPG with Albin or Pfitzner gear kit,i think around is £400-£800 depends on garage

6speed is best solution on longer run and price will be lower including fitting

Jura

 

cheers jura , center console looks much better now by the way i just dont like the idea of forking out 2.5k-3k for a second hand box when it may last a month ?? at least new you know how its been looked after ?

 

So my 04 WRX would be good for 360bhp rather than the 330bhp I was going to do??

 

Hi Dave hard to say,how long will last 2nd hand box,if you are buying from trustworthy seller and honest seller its much better.

Decision is hard and really if your current box working and holding power,i would say don't worry so much

if you will want go with next step,bigger turbo and other upgrades in this time i would think about the box and really best is speak with someone who will built your box and who will recommend you what to do

We are from start speak with our mapper and engine builder Neil@Slowboy racing and he suggest us PPG due better ratios



Jura