I was just wondering how much HP my fuel can handle safely. I am going to have my turbo upgraded and wanted to know a number that I can safely go with without adding larger injectors very soon. I am thinking like 325rwhp, is that right? I know that for 350-375rwhp I need 4x720cc injectors. Thanks for the help.

 

The big issue here is that the stock ECU won't drive the primaries past 60% duty cycle, no matter what the AFM signal. Oh, and get a good adjustable FPR.

Brandon

 

On a 87TII, full exhaust and cone filter, according to a FJO Wideband we had enough fuel for 10-11psi boost. Running 12psi got the a/f ratios up into the 12.6 range, not good.

It was good enough for 13.4's @ 105.5mph.

Jeff

 

Well Bryan @ BNR said that what I have is good for 300rwhp which should be good for mid/high 12s. Just wondering how far I could go though, so I know how far to upgrade right now. Thanks.

 

the stock injectors will max out before 300 at the flywheel.. stock fuel pump dies around 250

 

what was your fuel system set up? Just a walbro?

 

I have a walbro pump, 720cc secondaries and an s-afc though.

 

LOL whoops... ya probably 300-325RWHP