HCI2000SS

iTrader: (2)

So you're saying it was running lean with the Racetronix pump and hotwire kit?

camaroboricua

iTrader: (23)

Yes, it was a used pump from a trans am that made 560 whp but I guess it's tired now. I'll eventually get a brand new one installed and try again.

HCI2000SS

iTrader: (2)

Yeah something is not right. For reference I run the exact same setup and make close to 600 rwhp on the 150 shot, and have no lean issues at all

camaroboricua

iTrader: (23)

I hope it's just the pump. That's why I want to replace with a new one to rule it out. The only thing different with my system is that it has the corvette fuel filter with built in return line. And 30 lb injectors. I don't think any of those items would be the cause though

HCI2000SS

iTrader: (2)

You running a wet or dry kit?

camaroboricua

iTrader: (23)

Wet kit

HCI2000SS

iTrader: (2)

So the nitrous is definitely not the issue then. Are you positive those 30 lb injectors are enough? Stock are 28 lbs and in some cases a HCI LS1 can max those out. Just a thought

camaroboricua

iTrader: (23)

Yeah, we put a gauge on the fuel solenoid and did an all motor pull and it was okay until about 5k. Then the psi went from steady 58psi to about 42psi

HCI2000SS

iTrader: (2)

I see. In my case I'll get about an 8 psi drop from idle to WOT, but it's not enough to cause a lean condition.