I have engine management and upgrade fuel system I just want to know how much boost I can run properly tuned ??

This question depends on the turbo you are running, the fuel system components you are using, and the gas that you are running. You will need to supply a good bit more info before we can accurately answer your question.

Different boost levels for different situations is a good rule of thumb and of course, your tune is everything.

My setup for example is an FP green, and 750cc injectors. Tuned on C16 24-26 psi with no detonation was not a problem. However this is largely due to characteristics of the fuel.

My 91 octane street map is 21-22lbs with once again, not an ounce of detonation. The FP green in a very efficient turbo, this combined with plenty of fuel, supporting mods and one hell of a tune have created fabulous knock free results.

Put all these pieces together before subjecting your EJ257 to lots-o-boost and you will be a much happier person.

600cc injectos with garrett hybrid turbo

Originally posted by WorldOne


My 91 octane street map is 21-22lbs with once again, not an ounce of detonation. The FP green in a very efficient turbo, this combined with plenty of fuel, supporting mods and one hell of a tune have created fabulous knock free results.

Put all these pieces together before subjecting your EJ257 to lots-o-boost and you will be a much happier person.

What's the spool-up with the Green on a 2.5L ... when do reach 1bar , rpm/gear ??

and is it a 7 or 8cm Green


Jan

Originally posted by AntonioS
600cc injectos with garrett hybrid turbo

that really doesn't say much about the turbo. more information would be needed to determin the efficieny of the turbo

Originally posted by WorldOne
This question depends on the turbo you are running, the fuel system components you are using, and the gas that you are running. You will need to supply a good bit more info before we can accurately answer your question.

Different boost levels for different situations is a good rule of thumb and of course, your tune is everything.

My setup for example is an FP green, and 750cc injectors. Tuned on C16 24-26 psi with no detonation was not a problem. However this is largely due to characteristics of the fuel.

My 91 octane street map is 21-22lbs with once again, not an ounce of detonation. The FP green in a very efficient turbo, this combined with plenty of fuel, supporting mods and one hell of a tune have created fabulous knock free results.

Put all these pieces together before subjecting your EJ257 to lots-o-boost and you will be a much happier person.

Weird. Couldn't get one to hold over 20psi. That was with 3 springs holding the wastegate shut. :) But, fully ported heads... 264 JUN cams, etc etc etc.

It was designed for the 2 liter, it's funny to say it's too small. :lol:

-Mike