hi guys, i was wondering how much boost a totally stock 98 WRX can run on without frying the whole engine? i just recently bought a mechanical Turbosmart Gated Boost Control Valve. i installed it and tried running it at 10 PSI, is that ok? or is 10 PSI still low enough for me to tweak it up a little? any comments is appreciated.

14 psi is safe. thats what stock boost should be, should it not.

14PSI is stock?! thats really strange then, mines at 7PSI! what could be the reason? oh no! how strange that without doing anything, the boost winds up to 7PSI and thats that. is it a sign of bigger problems?

The stock boost is definitely ~14psi.. thats what it should run with zero modifications!... dunno why yours would be running 7psi... check your boost gauge!

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www.ToonMyRide.com.au

'04 E46 S/C M3 Coupe

Isn't 7psi where the wastegate spring is set at? When my pressure lines were on the wrong way around that is all it would go to. Same when the computer changed my advance multiplier to 0. Hope this helps.

ya i track the peak boost it makes on all gears. without the mechanical boost controller, it stops at 7PSI, with it, its currently sitting at 10PSI. the boost gauge is a standard VDO one. so it should be alright, even if its off, i give it leeway of +/- 1 PSI, but now the difference is too huge to put it down to just gauge not being accurate. hmm, strange

So your running 2psi more than stock??? why bother if you have aftermarket mods to handle more??

personally i thought stock boost was about 7-8 psi. Didnt think std set up could handle much more than 10psi.

Nah... mine is the MY94 which came with TD05 turbo running at 11.7psi stock... the MY96 onwards ran the TD04 which runs ~14psi... And mine is now running 18psi anywya...
I know of people who have run the TD04's at 20psi with no problems for over 2 years!!
So i dont think you'll have too many drama's upping it a little... although 20psi is probably a bit much if you dont want it to break!.. I think his was a bit of a freak in that respect!...

__________________
www.ToonMyRide.com.au

'04 E46 S/C M3 Coupe

20psi on completely stock wrx with just boost controller??? not exactly the smartest move

change your signature then

T, it ain't possible with just boost controller alone - unless of course you take Jme's suggestion, or fit boost cut defender etc.

And considering how many times this topic has been covered u still thought 7-8 psi was stock? What did u think we were driving? Corollas?