boost

[one30boy]

how much boost can be safely run on the 4g64 with stock internals?

[Lazarus]

7-8 psi Max

[DJ Galant]

it depenands on the turbo, whether it is intercooled or not, and also what have u done as a fuel upgrade.
With warlbro 255, and vortex fmu i blown my pistons at 4psi on 16g turbo.
u can't never really tell though...

[SuperchargedGTZ]

u are runnin a vortex fmu. i heard some "not so good things" about that. how do you like it? are you changing it?

[DJ Galant]

I don't like my fmu, in fact i am planning on switching to adjustable fpr such as aem or automotive.

[SuperchargedGTZ]

you should get a boost sensitive rising rate FPR. that is what i have. at idle it is around 45 psi and when full boost comes on it goes up to 65psi. in the begining i had problems with the fuel pressure droping off, so i put in a walbro 255 and didnt have that problem any more. but now with the bigger injectors i got, i am not sure cause i am still breaking in my engine. 700 miles down. i boosted a little this past weekend cause some kids where F#@%in with me

[DJ Galant]

what kind of fpr do u have gtz27 and do u have a link where i can ppurchuse that

[SuperchargedGTZ]

i forgot what kind it is....if you want you can call RIPP, or check out their website

www.rippmods.com