Duramax Diesels Forum Truck of the Week
  #16  
Old 11-10-2018, 08:45 AM
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Quote:
Originally Posted by onebaddmaxxx View Post
if your rail plug was popping open youd be in the 11-13k psi range though until you let off the throttle.
I always wondered if there was a better range for them when they open.
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  #17  
Old 11-10-2018, 09:08 AM
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Do the bottle test. Pull the little hoop rubber hose in front of the fprv, put a longer hose on the rail side and plug the return side. Put the long hose in a gal jug and tuck under the hood somewhere. Go drive it hard on the big tune and see if there is any fuel in that jug afterward. If there is, put a plug in or shim the fprv. If there isnít any, thatís not your issue
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  #18  
Old 11-10-2018, 03:11 PM
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Just throw a plug in and make sure it isn’t leaking. I would hate to lose a race because the FPRV decides to pop open. You also want to keep your pulse width close to stock.
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  #19  
Old 11-10-2018, 03:27 PM
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Ah depends on your goals and location. I ran and still do run stock injectors with a modded pump. 3300pw, 75mm turbo and Modified LLY pump. 700hp and 11.8 1/4 mile ET. Plenty of ways to get it done.
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  #20  
Old 11-18-2018, 03:46 PM
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Quote:
Originally Posted by Chevy1925 View Post
Do the bottle test. Pull the little hoop rubber hose in front of the fprv, put a longer hose on the rail side and plug the return side. Put the long hose in a gal jug and tuck under the hood somewhere. Go drive it hard on the big tune and see if there is any fuel in that jug afterward. If there is, put a plug in or shim the fprv. If there isnít any, thatís not your issue

Good thinking, I'll report back when I get it done.
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