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I have been running the H & S minimaxx for about a month now. I was seeing 26.5k rail pressure on mild, wild, and hot tunes. Now on the wild and hot tunes I am only climbing to 23.5 to 24.5. Wondering if anyone has any ideas for the falloff. I am thinking it could be a fuel filter getting plugged. I am on the stock fuel system. I still get 26.5 out of the mild tune. Any input would be appreciated. Maybe it is just time for a lift pump?
My thoughts exactly. Got a new cp3 under warranty out of the dealership before i killed the warranty. So the last thing i want to do is starve it at all.
My thoughts exactly. Got a new cp3 under warranty out of the dealership before i killed the warranty. So the last thing i want to do is starve it at all.
I don't thinks its your fuel filter getting plugged as much as starving your rig for fuel. once you get into the higher tunes you need to upgrade the injectors and the fuel delivery system to support the HP.
I'd be careful on the skinny pedal with the higher HP on the stock setup so you don't crack the injectors.
I just can't figure out why it ran 26.5 for a couple weeks and now it's hard to hit 24.5. I know I'm exceeding the stock fuel system. But i figured it would at least be consistent.
I'm not 100% sure, but I want to say the stock inj. are only rated for 25.0+/- anything over that is pushing it. maybe it's the stock cp3 keeping things in check, dunno.........
I can't beleave no ones mentioned this to you in this thread. What year truck do you have? Your signatures blank. If your trucks a 07.5-09 you need to shim your fuel pressure relief valve on the fuel rail as the stock fuel relief valve spring gets weak and will bleed off excess rail pressure.
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2007.5, 6.7L 2500 4x4 LARAMIE- H&S Performance MCC Mini Maxx with OverDrive, H&S Maxx Flow intake horn, H&S 4" boost tube, H&S 5" TBE straight piped, 3 ATS TC's and 2 ATS Stage 4 68's cooked, SunCoast M3GA68 Big Dawg now, HTT stainless steel 66/71/16 turbo, HTT stainless steel 3rd gen manifold, ARP 625's, Industrial Injection Stage 2 CP3, FASS 150/150, Snow Performance water methanol injection, Capped rail, AFE Mega Cannon, DiPricol Gauges, 4" Superlift/BDS, BOD CA's, GDP X-Bars, GDP CCV Delete, Bushwacker flares, Mag-Hytec diff covers, 20x14 American Force Independence, 33x13.5 Mickey Thompson ATZ's, RDX Billet Grill, Line X, 20% Tint, 12,000K HID's.www.hsperformance.com
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2007.5, 6.7L 2500 4x4 LARAMIE- H&S Performance MCC Mini Maxx with OverDrive, H&S Maxx Flow intake horn, H&S 4" boost tube, H&S 5" TBE straight piped, 3 ATS TC's and 2 ATS Stage 4 68's cooked, SunCoast M3GA68 Big Dawg now, HTT stainless steel 66/71/16 turbo, HTT stainless steel 3rd gen manifold, ARP 625's, Industrial Injection Stage 2 CP3, FASS 150/150, Snow Performance water methanol injection, Capped rail, AFE Mega Cannon, DiPricol Gauges, 4" Superlift/BDS, BOD CA's, GDP X-Bars, GDP CCV Delete, Bushwacker flares, Mag-Hytec diff covers, 20x14 American Force Independence, 33x13.5 Mickey Thompson ATZ's, RDX Billet Grill, Line X, 20% Tint, 12,000K HID's. 
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