Trucks & Trailers - Chip for 04 duramax

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View Full Version : Chip for 04 duramax


Eyehooker
03-12-2011, 07:10 AM
Would like real experience advise for best chip for fuel mileage---Have 04 1/2 LLY engine


WolfLLY
03-12-2011, 12:29 PM
diablo predator or PPE economy tuner.

If you would like to invest some time learning, EFI Live will yield the best results. Decreasing boost and highway speeds improves mileage. Lots of stuff to mess with.

Eyehooker
03-12-2011, 03:23 PM
Thanks for reply-- LOL at 68 ---I drive at Highway speed usually around 2K which is 67


h20addict
03-15-2011, 07:59 AM
Go with the PPE Xcelerator, one step above the Economy, however allows you to block the EGR and remove Cat with no check engine light. Economy tuner offers 40 90 160 tunes, Xcelerator is the same but includes a 225hp tune. I have been running mine on 90 for close to 40k miles now. Just be fore warned, the power is addictive.

Eyehooker
03-15-2011, 08:21 PM
Thanks for post -- Don't want power== want fuel mileage

thefermanator
03-16-2011, 10:08 AM
Thanks for post -- Don't want power== want fuel mileage

Higher HP tunes actually tend to get better milage if you excercise restraint on your end. The higher HP tunes have more timing and faster throttle tables that help milage when driven easy. Also for an LLY I would reccomend the LBZ turbo mouthpiece or another form of full intake replacement as the turbo inlet on an LLY is very restrictive.



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