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Join Date: Oct 2006
Location: Tipton, Iowa
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If I am trying to achieve at least 65psi of fuel to the injectors would a 100GPH pump be sufficient? And would it be important in increase line diameter?
I am running stock injectors now and see no reason to go larger if I can not supply adequate fuel
Tell me if the statements are correct below.
- A 100gph pump will provide more fuel pressure which will return me better fuel economy and supply the starving rear cylinders?
-Installing 90H.P. injectors with out a better fuel pump is useless?
-If your goal is to stay around a reliable 450-500 h.p. then you do not need anything larger than a 100gph pump?
-You do not need to increase fuel line diameter when installing a 100gph pump to get maximum benefit of the new pump?
Thanks y'all. I am trying to maximize my fuel economy and efficiency as I pack on the miles (130K)
1. 65psi to the injectors is more than enough. I would recommend 55-60 tops at a CONSTANT pressure.
2. A 100 gph pump will supply adequate fuel to stock and larger injectors. It will easily supply enough fuel for even 190's. The Airdog 100 is more than enough for 90% of the trucks out there. The 150 flows more, but isn't really necessary. The price is the same on both which is why I chose the 150, even though it is more labor intensive to install.
3. If installing upgraded injectors I would recommend at the minimum you ran an Airdog 100 or 150 and a regulated return system under the hood. You could skip the reg. return and just use a stage 1 kit with a rear crossover line if you got rid of the factory HFCM and installed a Raptor pump (which is a regulated pump).
4. The factory HFCM will easily supply stock injectors with a steady supply of fuel. IMO it will supply a stage 1 injector well enough too. Anything bigger and you need the Airdog for a pusher pump to the HFCM, if not a Raptor to replace the HFCM completely.
5. I'm not mentioning FASS here, because I personally do not recommend them due to all the failures I've witnessed and/or heard about.
I'm sure I left something out. Keep the questions coming.
'06 True Blue/Silver 250 crew cab
ARP's, EGR blocked
AFE stg.2, MBRP 4" pipe
Air Dog 150, ITP reg. return
Bulletproof oil bypass system
Ride rite air springs in the rear
EGT, boost, and fuel pressure gauges by DiProcol on the pillar
Plus a few other odds and ends...