Hi all looking for advice I have jut got my self a 2005 sti ppi only mods are turbo back exhaust . Lookn for 400bhp what mods will I need ???

 

What power is it running now?

Bigger turbo, 3 port boost solenoid and remap, lots of other stuff you can do.

If it were me i'd bite the bullet and go for 450bhp won't cost a much more and the car can handle it.

Speak to some tuners, API, Engine tuner, scooby clinic are all recommended and won't rob you, there are others just depends where you are.

 

https://www.scoobynet.com/members-ga...ods-begin.html

Or do a search for 400bhp in the thread titles

https://www.scoobynet.com/search.php?searchid=6231960

 

We'd go for an SC42 turbo.
You have the choice of the stock top or front mount intercooler depending on what exactly you're doing with it! Air filter choice would depend on that.
We would also suggest a header set, and you'd need a set of injectors and a remap. An uprated fuel pump would also be recommended.
Of course we'd volunteer to help you with that!

 

What would be the drive in/out cost of that work please?

 

[QUOTE=cookstar;10705823]What would be the drive in/out cost of that work please?[/QUOTE

No mention of the exhaust system other than headers? Would the PPP system support 400+?

JohnD

 

[QUOTE=JohnD;10705851]He mentions in the 1st post turbo back exhaust, presumably he has full decat.

 

[QUOTE=ditchmyster;10705936]Ahh............So he does

JohnD

 

Hey thanks for the replays not been on this can any one give me a list of what I would need to hit 450 and it's a full decat turbo back not sure what it's running was told round the 300 mark as the car is the ppi but am new to this so all help welcome
Also a cost if possible

 

400 is cheap and simple, 450 is much more costly. Not by much but it certainly noticeable on the pocket. Again search on here and you'll find your answers.

Rob

Ps other things you will need so not to end up in a tree, brake upgrade, suspension upgrade, ohhh and a clutch upgrade.

 

Anyone come back with a cost for this wrx??

 

Probaly about £10k to do right, better to buy an sti and mod.

 

I think he was referring Wrx as the OP not, as a wrx car to 450bhp 😄
However you would still be looking at 5k for an STI on a standard engine doing with new parts.

 

I know what he was meaning Rob, i said he'd be better buying an sti and modifying from there. By the time you uprate the gearbox and running gear, brakes, uprate the internals ect.

 

it is an STI isn't it?

 

Im talking about WRXYZ Rob, not the OP.

 

Thanks rob and others I will do a search now see what a can find

 

Surely we are only talking a bigger turbo, such as an sc46 as opposed to a sc42.

As long as he's not planning on doing loads of track days, top mount will be fine, ecu is ok, and pf discs and pads will be fine with the brembo's, few handling mod's which should be par for the course anyway.

Maybe an fpr and parallel rails, fuelpump ect already mentioned, should see near as damm it 450bhp.

Ok like i said if he's doing track days then yes there is whole host of other stuff that is needed, but for the odd weekend blast on the road it's not much more cost wise.

 

Ditchmyster I see your point, but I was referring to something that was going to last, so doing right above the usually 400bhp budget build. On a 400bhp build you can run the standard airbox, not on a 450 build. TMIC wont do 450 safely, if at all, in fact I have never known of anyone running over 422 on a TMIC. Clutch will be an issue with the additional torque. Standard headers are ok for 400, but ideally you need tubular for 450. 550cc Pink injectors will see 400 with a fpr, but not 450. Loads of turbos will see 400, much more money required over a 20G for a good spooling 450. recommend that an oil cooler is fitted too, as my last few 400bhp cars get hot quick.

Rob

 

Going for 400+ will cost easily over 5k with secondhand parts and labour charges.

 

As AJ says. SC42 type turbo, injectors, pump, induction kit remap Just about sensibly do-able on a top mount. But above that a front mount plus it starts to get complicated with clutches and flywheels, tubular headers, fuel pressure regs and to be frank that car on 400 is a delight. 450 and they start developing a steering pull to the left every time you pass a fuel station.

How many miles has it done? That'll influence the upgrade as it may just finish off a high mileage engine.

Call if we can help.

David APi 01926 614333

 

Lol at the steering pull.

I hear you guys, but surely if your planing on going to 400+ with the sc42, you'd expect to be doing the clutch and flywheel soon after, at least i would, fpr matter of course, injectors already mentioned, headers maybe if you want Exactly 450 bhp, and ill give you the front mount which is £500 for top notch.

but like i said originally, you'd be near as damn it just by putting a bigger turbo on, maybe around 430 440 and that extra bit cost next to nowt.

Wasn't harvey running more than 450bhp on a top mount once upon a time.

Ok he won't be able to cruise to the moon and back at full chat, or any where for that matter but he'll have more than 400

Ps, do what david and alan said don't listen to me, im just being a prat.

 

As has already been said..

For 400, with the mods already fitted, I'd keep the std headers with a Harvey up-pipe, std FPR, bigger injectors, Panel filter in STD air box, SC42 or 321H turbo, plus re-map.

STD STi top mount will manage fine, as will the clutch if in good condition anyway.

 

Hi thanks for all the advice a know that most of you know what you are talking about that car has done 60 thousand mile belt been done full Subaru history

 

Everyone is pretty much united with what they are saying, so there is your answer. 400bhp or thereabouts (don't get hung up on numbers) will put a smile on your face

You need to consider your mapping options too

Rob

 

thanks for the replies for my questions as well!!