Whipped hd

i domt think my truck has fpcm

03sierraslt

iTrader: (22)

I suggest just getting an aftermarket fuel pressure regulator and forget the idea of a Corvette one.

Whipped hd

We've used them on stock ls conversions before but I didn't think they would handle "big" pumps but I wasn't sure
I have pretty much everything figured out except how to return the fuel into the factory sending unit

Atomic

iTrader: (42)

Drill a hole in it and add a bulkhead fitting as the feed line and use the factory feed line as the return line.

Whipped hd

I didn't know if anyone has used a factory style sending unit or how it was done

03sierraslt

iTrader: (22)

banditrun10

how much horsepower is a single 450 rated for?

ezdaar

iTrader: (1)

I posted the 450s flow ratings already.
Its double that of a flex fuel.
Lets theorize that if a flex fuel pump can do 500, a 450 should beable to do 700+.

Now are you willing to roll the dice on a single pump at that power level? If that pump fails on a WOT pull. Bad things will happen.

Atomic

iTrader: (42)

About 750rwhp at 20psi of boost.

mcfarlnd

iTrader: (15)

Pretty sure it does. My 07 NNBS has one. Check just forward of the spare tire. And if it does, doing a return set up will require you to pull the fuse for the FPCM and getting rid of a few codes. Some on here have had success utilizing the stock FPCM (has to be part number# 25967325) and flashing them with the CTSV program in it, enabling higher pressures. The bucket you will need for the 450s to fit need to be from a flex fuel if you don't have one (from what I have read). I too am going turbo and am in the same process as you. And have researched this to death. I am going with a junkyard flex bucket, one walboro 450 (PWM to work with the FPCM), FPCM flashed with a CTSV VIN and CTSV injectors(free).

If interested in more info on the FPCM this is a great read from the CTSV community.
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