Denali08

I am using aeromotive 340 intank. Doing very well so far. Check my sig. I am using ractronix pump wiring kit because the pump draws more current and will need stronger wiring.

TX Tahoe Z71

iTrader: (28)

I went through 3 stock flex fuel pumps at 10psi before I finally got a Walbro 450. Maybe it was the Kenne Bell boost a pump killing them, or maybe they were just being overworked. Or maybe I just have terrible luck. My $.02

Denali08

What rwhp can the Walbro 450 support?

08cheyennesc

iTrader: (2)

fctry286

I do appoligize for not being on. But yes i do have a flex fuel. My A/F is spot on 12.4 WOT pull on the dyno untill 4800-5000rpm and then it jumps straight up to 14ish. Injector duty cycle is at 80%. I even tried adding more fuel from the MAF scaleing table but it did not help at all.

what did you adjust that table to where it reads 14afr. three6gmc?

fctry286

is that walbro actually drop in? no mod to the pump housing?

08cheyennesc

iTrader: (2)

No its not a direct replacement,apparently there's a couple ways to make it work, there's some info on here if you look around.

fctry286

Hmm ok may have to look into that. If that is my problem.

08cheyennesc

iTrader: (2)

If your truck is flexfuel then you can do just what this guy did #262 https://www.performancetrucks.net/fo...e27/?styleid=1

This is how I did my non flexfuel bucket