View Full Version : At what RWHP level do you guys change the stock intank pump?

02-12-2003, 05:14 PM
I've seen some n2o posts at +500 rwhp with the stock pump...what's the limit with a wet kit?TIA

02-15-2003, 02:53 AM
On a stock internal, I wouldnt go more than a 150 shot, seen my buddy mess his up, and his dyno told him not to, the power just wasnt there cuz of lacking fuel. Personally, I spray 100 and the car seems to love it, have sprayed 150 and no problem, but if your not stock internal careful cuz your pushing it. Goo-Luck.

Kenny H
02-15-2003, 11:31 AM
I have heard 440 RWHP is the magic number.

02-15-2003, 09:35 PM
Thanks for the info.

02-15-2003, 10:36 PM
460rwhp w/ stock intank pump and 30lb injectors. I know at about the limit of the pump, so a Walbro 255lph is going in.

02-18-2003, 12:09 PM
My car made 606/687 with the stock intake pump and on pump gas (73/38 jets NX kit) <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> The car only had an NOS inline pump and nothing more.

The fuel pressure never dropped and the A/F was between 12.0-11.0 the entire time....

This was on the stock bottom end also. I would not recommend this however because the car did lift the heads on the way home that night <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Matt G

02-22-2003, 03:09 AM
Matt, check your mail. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />