15 psi?

[clem]

i wanna turn up my mr2 to 15 psi is it possible i have a stock mr2 let me know please!

[Wasted Youth]

i run 15 psi stock mr2 with just an apexi intake as a daily driver.
it would ofcorce lessen the risk if you would have had modified exhaust and an intercooler, but i am pretty sure that 15psi is fine.
just don't forget to eather dissable fuel cut or get an FCD from HKS or there was a website where u can make one for $8.
but if you forget to dissable fuel cut do not be afraid when your car nose dives and check engine light will come on lol. what you do in that situation is turn off your car turn it back on again and do not boost 15 no more untill you disable it.

hope that helps
and by the way how many miles on the engine and in what condition is it?

[Peter]

well if wasted youth is running it as a DD i think its safe...and if u doute it just run a bit lower to be on the safe side

[patR1]

Czesc Piotrek Jak tam zdrowko,
I like your Avator!

I polish to mate live in Sydney , own a 97 mr2 n/a soon to buy a gen3

[Wasted Youth]

oh yea well russia is in da house lol.
donno if u understand, but VSEM PRIVET OT ROMANA.

[onehotcamry]

you should be fine w/ 15psi.

Make sure your ignition system is up to par though. If it is more than a year old, most people reccomend changing it. Make sure the engine is dependable then turn the boost up.

I run 15psi daily w/ intake exhaust and some other small stuff.

I've turned mine down though b/c I DO need to update my ignition components. Hope I helped you.

Joel

[Gairloch]

From the MR2 Power Primer:

Strength, a moderate compression ratio and an intercooler allow the stock 3S-GTE to easily handle higher that stock levels of boost pressure. Maximum stock boost pressure is 10-11psi. With the addition of three simple, inexpensive devices, this can be safely increased to 15psi for a gain of nearly 10rwhp per additional pound of boost. After doing this, you can expect to be producing approximately 200rwhp. First, you need an accurate boost gauge to be sure that you are not boosting above 15psi. The stock boost gauge is slow to respond, peaks below 15psi and has no numbers to tell you how high you are boosting. Second, you need to raise the point at which the protective fuel cut feature kicks in from around 12psi to 16 or 17psi. This can be done easily and inexpensively as shown here. Finally, you need a boost controller to raise the actual factory set boost pressure to 15psi. Manual boost controllers are inexpensive and do the job while electronic boost controllers are more expensive but allow easy adjustment from the cabin. If you get a manual boost controller, go with a ball and spring type instead of a bleeder type. Ball and spring controllers keep the wastegate shut until you approach the desired boost limit while bleeder types let the wastegate partly open at lower boost and result in a slower transition to full boost. Several boost controllers are available with CARB exemption stickers, so you can take advantage of this performance enhancement in all 50 states.