RPMs [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: RPMs


teel23
02-20-2009, 04:30 PM
How come my rpms dont go over 2500 rpms. Even in WOT its only about 2300 to 2600 is this normal or what.

hondarider552
02-20-2009, 05:02 PM
it's not normal.

Codes?
when was the last time you changed your fuel filter?

teel23
02-20-2009, 05:07 PM
Been awhile its at like 29% on the DIC

teel23
02-20-2009, 05:09 PM
Could the predator be the problem

hondarider552
02-20-2009, 05:09 PM
Replace it and see if it fixes it, my bet it does.

teel23
02-20-2009, 05:11 PM
Didnt think it would make that big of a deal but i will try. Would that cause the truck to smoke alot more even in park or just idle.

Thanks hondarider

hondarider552
02-20-2009, 05:13 PM
Mine smokes at idle with both my stock tune in and my race tune, not sure on the answer.

No problem, here to help.

teel23
02-20-2009, 05:14 PM
What kind of mileage are you getting and what kind of race tune you got?

teel23
02-20-2009, 05:16 PM
What kind of fuel filter is top of the line filter. I heard that napa gold is good what do u recommend?

hondarider552
02-20-2009, 05:16 PM
Im getting around 20-22 if i stay below 2000rpm and under 70. Race tune is handeled by EFILive and my trans tuning.

hondarider552
02-20-2009, 05:17 PM
I use Wix filters Part number is 33910

teel23
02-20-2009, 05:19 PM
The best i have seen is 18.8 and that was at 65mph what the trick? How do u stay under 2000 thats crazy i wish i didnt have heavy foot syndrome:o:

hondarider552
02-20-2009, 05:21 PM
The best i have seen is 18.8 and that was at 65mph what the trick? How do u stay under 2000 thats crazy i wish i didnt have heavy foot syndrome:o:

Accellerate slowly.
Boost kills mileage, so i opened the vanes on my tunes so i only produce about 3-4 psi.

DrHolliday
02-20-2009, 07:21 PM
Try the fuel filter, when they get plugged it can limit fuel enough to not let it rev.

Mine also puts out a slight haze at idle even on the stock tuning.