Fuel Pump? 500whp

**JAX04** · 03-25-2009, 11:52 AM

Ok, i have a 2004 pontiac GTO. LS1 Auto4. ok, ive just ordered my t70 turbo, and 60lb injectors. going for some around 450-500 whp. is a single walbro 255 intank gonna do the trick. do i even need to do and intank. can i add a pump. im looking for all possbile outs here. ive heard boost a pumps, inline pump, intank pumps. i dont know which is right. any thoughts plz. im not looking to grow in the future for power. maybe some day. years from now. ill do a real setup then on new motor and all. just dont know where to go from here with my fuel pump selection. and are 60's to big. will 42's work. i dont know. damn it im stupid

**NoscamaroSS** · 03-25-2009, 12:35 PM

The 60's will work fine, a 255 walbro should be fine but if its having a hard time keeping up you could just add a boost a pump.

**Mr. Luos** · 03-25-2009, 01:23 PM

Gonna need more than a 255 I would think since it is boosted.
N/A can get away with it, boosted needs a little more.

Will be close though.

**JAX04** · 03-25-2009, 02:36 PM

you think the 255 and a boost a pump will do the trick then

**Mr. Luos** · 03-25-2009, 07:17 PM

Originally Posted by JAX04

you think the 255 and a boost a pump will do the trick then

**BADASS2000SS** · 03-26-2009, 01:24 AM

You can also go with an inline pump and a FMU.That what I run now and I am at 440RWHP.

**JAX04** · 03-26-2009, 04:07 AM

FMU?

**BADASS2000SS** · 03-27-2009, 12:49 AM

Originally Posted by JAX04

FMU?

Fuel Management Unit - Increases fuel pressure.

**JAX04** · 03-27-2009, 04:16 AM

aww. like a BAP or a magnavolt

**driftpin** · 03-28-2009, 05:28 AM

I would go with a twin 255 setup and just forget about it. Screw the boost a pump. One thing I've learned with boost is you may say right now you have no plans of upgrading for years but that can change quick if you come into some extra cash. Boost is very addictive. Just go with twins. Do it now and save yourself the time and $ down the road.

**JAX04** · 03-28-2009, 06:05 AM

well, thats the truth, im looking for a 1998 vette to do all my boosting with and fun with. this is just to make the gto go. all my money's in the future will be spent on finding that vette and making her crazy