what boost can i run because im running 15psi

[mitman2501]

Hi i put a air filter on the car the other day its a rev2 since i owned the car its ran just under 14psi manual boost contral but the higher up the revs the lower the boost drops around 10psi but since i put the air filter on it boosting more around 15psi i have turn the boost down nealy off but it seems to still boosting a little over 14psi 3rd 4th and 5th !! it still drops off but only to around 12psi im lost dnt know what to do is this some think to worry about ? all the car has is filter and exhurst waiting for the dump valve to arrive any help !!!!!

[Craigo]

Get an EBC or remove the MBC would be my advice. i dont trust them.

[mitman2501]

whats a EBC ? if i remove the MBC what will happen with the boost

[Marf]

E=Electronic

M=Manual

[mitman2501]

Is 16 psi to high then ?

[Andytoyota]

On a rev 2 with those mods its far too high, the head gasket wont be able to take that, without extra cooling mods you'll be putting too much heat into the engine and causing det/pinking so potential for cracked ringlands etc.... Im guessing your probably using standard unleaded as well...

[Ryan S]

Is 16 psi to high then ?

yeah, 14psi max:)

you will have trouble with fueling above that, and you're head gasket may go pop too:)

[mitman2501]

ok i set it too 14psi then but the higher the rev the boost does drop to about 12psi what the driffrent in fuel then what fuel is for the best?

[Andytoyota]

Even 14psi is pushing it without cooling mods but still....
You should be running V-Power petrol, at the very least super unleaded, helps stop detonation which will ruin your enigne (and only needs to happen once).
No offence intended here bud but I would really spend an evening going through this whole forum researching the MR2 turbo and its needs/quirks/limitations as it seems you dont know a lot about the cars which isnt an insult but for the sake of your car and your wallet. Otherwise you may get a very large bill sooner rather than later, they're quite highly strung engine's and incorrect running will bite you in the ar$e

[Jaspa]

On a standard ECU, you shouldn't use anything other than Super unleaded (Optimax / Ultima etc) as it is closer to the Jap fuels.

It's OK to use normal fuel on short journeys in an emergency but stay off of boost as much as possible

[Ryan S]

Even 14psi is pushing it without cooling mods but still....
You should be running V-Power petrol, at the very least super unleaded, helps stop detonation which will ruin your enigne (and only needs to happen once).
No offence intended here bud but I would really spend an evening going through this whole forum researching the MR2 turbo and its needs/quirks/limitations as it seems you dont know a lot about the cars which isnt an insult but for the sake of your car and your wallet. Otherwise you may get a very large bill sooner rather than later, they're quite highly strung engine's and incorrect running will bite you in the ar$e

+1, and no offence intended, we're genuinely trying to help