Procharger FMU Q's - Third Generation F-Body Message Boards

luvofjah · 02-25-2008, 10:39 PM

I have a 305 TPI.... lookin to get a D1sc kit...

I know that's the stage II kit, but I wanted to use it at low boost with FMU to enjoy it and later, when I get another engine, then turn up the boost and get a custom tune / computer to monitor boost...

So for those that have used the FMU, I know its not the ideal way, but do you think I should be ok with 8 or 9 lbs of boost?

After dropping that much coin on a system, I just wanna have some fun with it and later really wake it up...

Rafael

KS91Z28 · 02-27-2008, 01:26 PM

I had a 91 also which is speed density. The FMU wouldn't do **** for me. The FMU increased pressure, but it didn't help my air/fuel ratio at all. The rest of the kit is great.

luvofjah · 02-27-2008, 01:27 PM

So what did you do?....

Please don't say, "bigger injectors, custom tune, upgraded computer to monitor boost", etc...

Raf

90-irocdx3 · 02-28-2008, 02:18 AM

you are going to need bigger injectors and tune and also the fmu depending on how big of injectors you go with.

luvofjah · 02-28-2008, 07:25 AM

Getting bigger injectors means re programming the ecm and for that, might as well run the 749 Boost sensing code or something...

So no one with a 305 tpi has been able to use the supplied FMU @ low boost?

Rafael