My fuel setup consisted of 8:1 fmu/vafc/intank pump/310cc at 7 psi. I replace the fuel filter, added an inline pump, swapped out the 8:1 for a 12:1 disk and re-routed the vacuum lines. The fmu vac line is now t'eed off of the fpr. After all this hassle I'm still leaning out. This is getting too insane...


[Modified by NHB Fighter, 9:31 PM 10/26/2002]

 

Go to http://www.rceng.com and check out there calculator it can tell you if you injectors are not providing enogh fuel. Youll need to know the fuel pressure.'

Blaze

 

fuel pressure is 52 at idle.

 

did you check the web site and see if you injectors are big enough? how many lbs of boost r u running?


Blaze

 

ok I know I should be running rich for sure. My setup is now 12:1 fmu/ 310cc injectors/ 255lph intank pump / msd inline pump / vafc @ only 7 psi and runs lean! And plus I lowered my compression to 9.2:1 so it should be crazy rich.

Oh yea vafc is +50% from 4000-8000 rpm


[Modified by NHB Fighter, 9:41 PM 10/26/2002]

 

you need some 342cc injectors thats why ur running lean. upgrade to 380s or even 410s to keep up with more boost.

hth Blaze

 

lean is lean no matter what. get bigger injectors and fix it. O yah if you push 225 bhp you should crank up the fuel press and that will help so you dont have to go bigget then 410s, you should prolly pick up some 450s off a DSM> lower compressoin had nothin to do with how rich or lean your runnin. an untuned engine w/ 8.5 comp and boosted will blow vs. a 10.5 comp tuned and boosted.