how much boost to run on modded mr2 turbo

Please tell me about what my safe boost limit should be with the below listed set up.

93' MR2 turbo

JE pistons 9-1 comp
JE rings
Carillo rods
Apex i 1.5mm headgasket
HKS 264D intake cam
HKS 265D exhaust cam
HKS vlave spring set
Greddy 20G turbo TD06
Walbro high press / high flow pump GSS341
540 cc injectors
3 angle valve job
bowl blend

we are using a SAFC-II for tuning. I need to know what the highest safe boost ammount would be to tune this car to.

Thank you for any help.

I would just monitor your knock sensor and air-fuel ratios and tune based on that. Since you have upgraded the fuel system, I would suspect that 17-19psi will easily keep your AFRs in a safe range.

You might also want to think about upgrading the stock intercooler because that is a large bottleneck and is not very efficient.

Tim Beck
'91 TD-06 Superwhite

I would highly recommend getting an adjustable fuel pressure regulator:
www.trueleo.com/fpr.htm

Tuning with the SAFC only is a recipe for disaster with the turbo MR2. As you lean out fuel, the ECU will advacne timing until things go boom.
It is safer to adjust your base idle FP, before you start tuing the SAFC.

As far as boost goes, I would not run over 15 psi unless you have:
*upgraded intercooler
*Water injection
*race gas
OR
You car was tuned to run more boost safely (no knock)
OR
you don't care if your engine goes boom.

I am a cautisuous person, which is why I race at 22 psi on an unopened 3sgte with 197,000 origina lmiles on it with no problems. I don't like problems. :)

Hey Jek, you been back on the dyno recently? And have you run it since the rollbar install and the latest weight reduction?

(Thread Hijacking is more than a sport)

I have had no reason to re-dyno ... so no.
I have done one run since the weight reduction and I had some issue on the run ... stupid issues.
All is resolved now.
I ran a 12.7 @ 113, there is an in car video I posted on the MR2 board in the drag forum along with a description of the issues I had.