hey guys i have a question and could usr an awnser. I have 06 cc/sb with a lly every know and then when i do a full thottle blast i have great fuel pressure till the top of second gear going into third if i let off the pedal a bit the pressure comes right back this a very rare problem. the truck has 67000 miles has a cold air kit 6 inch dual stacks no muffler it has an edge evolution tuner set on 60 horsepower tow tune so like i said its mostly stock ckd codes and it never sets any fuel filter is 2 weeks old . when the truck does this the rail pressure wil be between 25900 psi to 26500 and it will drop to 8500 to 16000 psi . thanks for the help just looking for the an awnser.
WOT fuel issue almost stock truck
- Thread starter 06dmaxcrew
- Start date
My guess would be the fuel pressure relief valve , it should throw a code though , unless you letting out of it immediately when it does it , or if the edge is blocking the code ??
Thanks trent that's what I thought should I shim or install a race valve thanx again
A Friend of mine has an an 06 lly he runs the edge Evo race on the 3 with no problems but 4 pops a code if you stay into it.strange yours would do it on level 2 and not throw a code.maybe try the bottle test In the do it yourself section