Fuel upgrade
Thread Starter
Burning Brakes
Joined: Jun 2009
Posts: 1,065
Likes: 7
From: Madison, MS
Fuel upgrade
right now I have a 98, with a p1sc on 5lbs of boost. I am on stock pumps, with close to 140,000 miles. I have 60lb injectors, and a boosta pump, set at 40%, with meth injection as well. The car runs great. Looking to do a rear end swap and was thinking while doing that, upgrading the fuel pumps.. I eventually want to make around 10-12 psi, and around 550 rwhp would be awesome.. I know the stock motor is not going to last forever, and if it does go, will probably do a 347 boost motor or what not. My question is should I just throw walbro 255 pumps in there with the boosta pump, and maybe some 80lb injectors? I have had great success with 255 pumps in the past, but most of those cars were either nitrous, or all motor builds.. Most of the searches I did only pill up e85 builds.. I wanna keep this car a 93 octane car.. Any help would be great.. Thanks..
Acct Suspended APR 2026 by request
Joined: Dec 2010
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2020 Corvette of the Year Finalist (performance mods)
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if your goal is 550 you don't need a crazy fuel system to support that... you would be fine with a 255 in tank pump and I would add a hotwire harness so you don't lose voltage to the pump through the stock wiring... loop your boost a pump wires if you haven't already and ditch the controller and you already have meth so you should be set... you can keep your 60lb injectors too, I don't see a need to upgrade them at that power level... I was supporting a little over 700 on my car with basically that same setup
