SuperCharger Fuel Questions.

[OrangeMustangGt]

I have a few questions.Right now i have 19 lbs inj's. OK, the max injectors i can run is 30lb due to my mass air sensor, now i want to add a supercharger will 30's and say an fmu work? If i bought one of those vorteq kits that includes the fmu, could i make it work with my 19's,,,i know its designed to go on a stock motor, and i bet mine needs a bit more fuel?. thanks

 

[94GTLaserRC]

I ran an FMU with 8:1 calibration, and 30# injectors, and ran PIG RICH with the mods in my sig. (stock heads..RWHP around 380)

The stuff came used off a car making 425 to the wheels. If you dont want to spend money on the MAM calib. you can get a chip (or TwEECer) to make 42's work with the stock MAF.

 

[OrangeMustangGt]

ok, thanks the reason i ask is because i have a c+l meter. If i used an fmu with my 19's would it be wayy to lean?>

 

[Venom351R]

Pretty much most of the time you put on a S/C you need bigger then stock #19 injectors and the stock fuel pump. Im running #30LB injectors and an FMU but Im pretty sure its running rich w/ it so I should be able to take it off and get it tunned w/ out the FMU on it. You prob can get alway w/ running the #19's w/ the FMU but if you have a C&L then just get a diffrent sample tube and upgrade your injectors.

 

[OrangeMustangGt]

yeah that was my question, because vortech kits come with an fmu that is designed for stock injectors. I have some mods, so what im saying is that that kit may not supply enough fuel for his motor. I wonder with a s/c and a combo like mine, would just 30's be enough? how much hp can they handle?

 

[OrangeMustangGt]

ok i just read that 30lbs are good for around 450hp. My reasoning is that they would be enough and i could forget about an fmu.

 

[94GTLaserRC]

ok i just read that 30lbs are good for around 450hp. My reasoning is that they would be enough and i could forget about an fmu.

That I believe is Fly HP, and at MAX capacity (you want them around 80%)

My car with 30's and NO FMU dynoed 389 to the wheels, but they had to shut it down at that point because the AFR hit 13

NO WAY can you use 30's and NO FMU with 450 RWHP!
RC