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Old 06-13-2014, 09:09 AM
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Fuel system questions

I've been searching this morning but can't really find a solid answer.
I am looking to get a set of Warren injectors, but I don't know how far I can go with the rest of my stock fuel system.

I would also like to either send my turbo out to Work Turbochargers to get rebuilt, or get a PowerMax unit from him.

So my question is, how far can I go with the stock fuel system?
Then I guess the next issue is, how far before my trans ends up scattered along the highway?
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Old 06-13-2014, 09:47 AM
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if you are going to run stock injectors then the stock fuel system is fine. If you are going bigger you need to upgrade, imho. I have an Air Dog 2 160 DF. You will also need a regulated fuel return to keep injector number 8 from running out of fuel.
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Old 06-14-2014, 03:37 AM


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My suggestion is to start at the tank so you work forward. Get the tank sumped, use a Airdog 100/150. Then get the fuel pressure blue spring installed with a fuel pressure gauge. Watch and record your pressures.

IF you go bigger than 155's you need to dig deeper for a full fuel system. I'd consider building a trans when you are beating it daily with over 550hp. It's a stout unit and may take more HP than 550 so ask around. $4-7k for a built trans isn't pocket money for most people.
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Old 06-14-2014, 09:52 AM
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Injector size is only part of the issue. Even with stock injectors on a race tune at full PW with a stock fuel system, you can create a low fuel pressure scenario. Conversely, you can run 190/75s with a moderate tune and have no issues on the stock fuel system. The problem of short on fuel is dependant on the overall status of your fuel system, the tune (PW), the nozzle size and your driving habit.

I have rune a stock fuel system on my truck with larger parts for over a year with no real issues, but I don't continually beat up on my truck or race it. FWIW, I will be upgrading to a RR with the 6.7 pump when I find the time to do it. If I really feel the need for speed and power, I would add a dual HPOP, a new torque converter and possibly a transmission, after it breaks.
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