LMFD296

Instaling an aa procharger on my 02 c5. Since it's a 2002 a fuel pump swap is simple. Would it be necessary to still use a boost a pump with the larger fuel pump? Or would just the larger fuel pump suffice?

corvet786c

I have a 2002 A4 procharged and use the Kenny Bell BAP, I'm not sure if it stock fuel pump or not. I am about 8lbs of boost.

Turpid porpoise

My vote goes to a fuel pump and hotwire.

Tusc

Lean = death

Went with racetronix 255lph in-tank, their hard wire kit, AND the BAP.

LMFD296

I have the racetronix pump. Any reason why it would go lean? Aside from pump failure.

stevieturbo

That depends how much fuel you need, what pump you intend to fit etc etc etc.

It will always be better to size your pump to work without needing things like BAP

LMFD296

I have the racetronix 005a fuel pump.

stevieturbo

That depends exactly why it went lean and under what circumstances. It could be a faulty component, bad tuning, wiring, filter, pump, etc etc.


OK...but you still havent given any details about how much fuel you might need.

Racetronix claim that pump with their wiring harness can cope with around 550rwhp. Although of course every setup is different, every dyno is different.

I1ABAZO6

I just finished an AA kit on my 00 C5. I installed the included pump as per the instructions. When it was tuned, they showed me how fuel pressure would drop on top end. He had me install a BAP as well. Like most say, better safe than sorry... we made 661 RHP / 551 FT

romandian

the 255 pump is 255 at 3 bar. at 15 psi its done (and thats a completely stock engine).

Halnazz

I had close to the same hp, 671/600 on a mustang dyno) at that point I was on the factory pump and a BAP. It would run lean on a long high rpm pull. I have went to the 340 TO see how it will do. Haven't had time to get it re-tune yet to see how it will do. Changed other things is the main reason to get it re-tuned. I'll post after the tune in a couple weeks and let you know how it does.

lpina650

What fuel pressure were you seeing? Are you deleting the bucket to run a 340 pump?

lilryan

I have a bap and lingenfelter pump and I have made 730hp so far with no fueling issues

ZYOUL8R

I have the same along with methanol injection and I am making over 700hp. My stock pump with only 40k miles was only making 56lbs at idle. The new 255 made 60lbs at idle.