I got beat by a 6.7 joke today :(

[Muskrat]

Time to build it!!! So! I have a 2008 GMC Sierra crew cab z71 swb LMM 6.6L Duramax. I got beat by a ford! My truck only has 335HP/660tq I THINK. Haven't Dyno'd it, just read the manual. I cut off the muffler. Other then that it's stock! WHAT can I do to add some horsepower without breaking my bank?!

 

[Andrew]

your truck has 365 hp but i think efi live intake real aftermarket exhaust would go a long way an not kill your wallet :thumb:

 

[Muskrat]

What about my sensors on the exhaust? How would I get the "Check engine" light to go off ? Bcuz I know if you don't do a certain delete on the exhaust it'll run like crap.

 

[Kappa9012]

efi can turn all the regeneration stuff off so it will run fine.

 

[Muskrat]

Tell me about EFI, I'm not familiar to it. Do I order it then just hook it up? Or take it to someone and they tune it to my truck and turn off all the regeneration stuff?

 

[Muskrat]

I've owned 6.5 detroits for 2 years. This is my first electrical diesel lol.

 

[TLyons90]

Search is your friend :thumb:

Use it wisely and you will learn a lot!

 

[arneson]

Buy efi live from the vendors here or someone close to you that can tune in truck is best forsure. Get a lift pump and your good to go for what the tranny can hold till you build that. A good 100hp tune will wake it right up.
A lift pump is not needed for a 100hp or so but I like the filtration and positive fuel flow it creates and then get rid of the stock one. Just what I always do to get the mods started. Then I'd do exhaust.
If you wanna get serious, build the transaction first then you can really hold some power.

 

[MACKIN]

Maybe that Ford had a Duramax in it there seems to be a lot of that going on lately!

 

[Muskrat]

Maybe it did! Lol it was too quiet for a powerstroke. Lol

 

[dirtyduramax05]

Maybe it did! Lol it was too quiet for a powerstroke. Lol

where are you from maybe able to point u in the right direction
but i would stay away from box programmers and use efi live and a dpf delete u dont have to have cold air intake would just be nice but u will see ur most gain from efi and dpf and u will be a happy camper

 

[DIESELMAFIAPER.LB7]

Maybe that Ford had a Duramax in it there seems to be a lot of that going on lately!

6.7s are very similar to the lml same exact fuel systems

 

[bevi]

I have the same truck and did efi live and a full exhaust made a decent difference. A lot of venders on here have package deals and can hook you up for a good price.

 

[BLACKMAX1]

My buddy has a 6.7 with H&S, 5in exhaust, and egr delete. It runs low 14s maybe high 13s if he launches it hard. His 150 tune "max" vs my 150 "DD" was barley a race. On the track I took him by over a second and on the street in 2wd I pedaled it and left him...

There heavy trucks. Efi live, and a lift pump, with a trans go will go a long way.

 

[DIESELMAFIAPER.LB7]

Yes they won't hold a candle tuned vs tuned to a dmax but they run pretty healthy with a 66mm turbo :thumb: I wanna get one just to try and figure out how to make a kit for them

 

[JDub]

63/68 turbo and a dual cp3 kit will make around 600 with pretty standard tuning, but a ccsb still weighs 8000lbs or more though.

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