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The mkiv Supra Owners Club

How much boost?


tonyhawk
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I have recently had the turbos on my Mkiv ('93 jap spec TT) rebuilt using oversized steel rotors etc., reconned and balanced etc., and according to the shop, they should be good for 1.5bar. However, my car as it is may not, hence is the question:

 

It's a Jap spec, original fuelling with the exception of a Walbro pump.

The block and pistons have been done (JE).

Head gasket is the HKS 2mm (ready for the big guy(s) when I can afford it).

The head has been fettled and the cams are 264 in and out.

HKS adjustable cam wheels

I have IK24's in there.

Boost is being controlled by an EVC V.

The exhaust is HKS with the second cat removed.

The rest of the turbo set up is stock.

No intercooler yet :cry:

 

Given the current state of tune, what pressure can I run?

 

I realise the best bet would be to take it to Thor or wherever, which I will be doing in a few weeks when I will be treating it to a piggy back ECU and professional tuning hands, but it's currently running just under 1bar, and it seem wrong to waste the new toys for so long.. :thumbdown . However, at the same time I don't want to break it!

 

Any help would be appreciated.

 

Thanks

 

Tony

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