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-   -   fuel pump & low boost (https://www.performancetrucks.net/forums/gmt-900-trucks-general-discussion-188/fuel-pump-low-boost-506884/)

bk_cauley 08-28-2012 07:15 AM

fuel pump & low boost
 
Can my non-flex fuel pump support 450 whp? thats my power goals with my new setup and i was curious. Ive tried searching but im getting mixed reviews. new setup will be a 67mm turbo on low boost. and by low i mean 6-8 psi.

smokeshow 08-28-2012 07:17 AM

What year truck

bk_cauley 08-28-2012 08:47 AM

2008 5.3. non flex fuel.

bk_cauley 08-30-2012 07:06 AM

So in 5 years nobody has tried to push a stock pump?

smokeshow 08-30-2012 07:07 AM

I've run it to 600rwhp or so.

bk_cauley 08-30-2012 09:10 AM


Originally Posted by smokeshow (Post 4982334)
I've run it to 600rwhp or so.

Thank you. Thats all i needed to know. i only plan to push 450-500 at the most.

Boober 08-30-2012 12:46 PM

You will need some good sized injectors. Your fuel pressure will go down with increased flow and so your delta pressure will take a dive as well. FWIW, I haven't got a clue how much power I'm making, but my truck is flex fuel, I'm running 60# injectors, making a maximum of 8psi, my injector duty cycles hit 95-100% and my delta pressure goes down to about 36psi.

scooter k 08-30-2012 01:28 PM

I ran a non flex fuel pump to 10psi on a TVS2300. The fuel pressure did start to drop at that boost level though. I ended up spraying meth as a suppliment.

Boober 08-30-2012 06:40 PM


Originally Posted by scooter k (Post 4982500)
I ran a non flex fuel pump to 10psi on a TVS2300. The fuel pressure did start to drop at that boost level though. I ended up spraying meth as a suppliment.

This is EXACTLY the route I'm taking. Talked to Julio at Alky Control this morning. Ive got a 2 gallon Trick reservoir and I'm going to send it to him to modify for his system. It will be set up to activate through MAF frequency so it can be a true daily driver meth system.

splinter 08-30-2012 11:26 PM

Monitor your current WOT fuel pressure at the rail and then report back.
90%+ IDC results in too little leeway for any legitimate tuner to optimize the combination, and increases the likelihood of melted pistons.


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