Who using their 2500hd Gasser?

cmysstailights · September 20, 2018

Have fun tuning it lol. You see nearly zero force induction equipped 2011 and newer gas HD's and the e78 ecm is the reason for that.

Im not tuning it, hv a shop tht tunes my cars. Hv a friend with a 17 zo6 tuned running on e85. Its nasty, i like. Have another friend with a 87 gnx on e85

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SierraHD17 · September 20, 2018

Its irrevelevant who does the tuning. They likely will tell you it's fine and base their confidence off of tuning other torque model ecms like the e92 that vette would have. Problem is the lack of actual support for the platform... he will see when he starts trying to clean up part throttle drivability. Maybe you will get lucky and not tear the blower back off and sell it lol.

jt metal · September 20, 2018

5 hours ago, SierraHD17 said:

Have fun tuning it lol. You see nearly zero force induction equipped 2011 and newer gas HD's and the e78 ecm is the reason for that.

Please explain? Also, if it's a problem, why doesn't the supercharger manufacturer include a preprogrammed processor? EPA or something?

SierraHD17 · September 20, 2018

Already did one post up. It's not a popular application lol... fleets buy these trucks mostly and don't add performance parts to them. The ecm is shared with gas engine HD trucks and Chevy Cruze's.... nothing anyone cares about lol.

So let's say you talk to a guy and he is like yeah I have tuned all this blah blah blah ask if he has actually done a 2011 or newer HD gas job that isnt basically stock lol. Ecms arent a one fits all with GM... they build different models for different vehicles and in this case the 2011 up HD 6 liter trucks got an oddball. The 2010 and older HDs run the e38 which tons of cars and trucks used so the support for the software to tune them was there. Since this goofy thing was released and used on stuff with a limited market it is what it is.

I haven't cammed my own 2017 HD as it's being an ignorant pos even just stock. I have a ghost timing pull I can't figure out and neither can a couple "pro" tuners either.... not to mention I can make table changes and it just does whatever it did before like I did nothing at all. I think I am missing tables as well to maybe handle my complaints...I have a cam and a phaser limiter sitting here but until this gets sorted out I am not putting it in to fight with some junk that wont run right.

Take efilives forum board. In 8 years the section dealing with the e78 ecm has gotten 4 pages of questions... so under 200. Since the e92s release in 2013 that section has 297 pages of questions and counting. Now what would you focus your efforts on lol.

Edited September 20, 2018 by SierraHD17

jt metal · September 20, 2018

Sounds like a dead end.....thanks

SierraHD17 · September 20, 2018

Like feel free to find someone to prove me wrong because I would like their help to tune my truck too!

cmysstailights · September 20, 2018

Already did one post up. It's not a popular application lol... fleets buy these trucks mostly and don't add performance parts to them. The ecm is shared with gas engine HD trucks and Chevy Cruze's.... nothing anyone cares about lol.

So let's say you talk to a guy and he is like yeah I have tuned all this blah blah blah ask if he has actually done a 2011 or newer HD gas job that isnt basically stock lol. Ecms arent a one fits all with GM... they build different models for different vehicles and in this case the 2011 up HD 6 liter trucks got an oddball. The 2010 and older HDs run the e38 which tons of cars and trucks used so the support for the software to tune them was there. Since this goofy thing was released and used on stuff with a limited market it is what it is.

I haven't cammed my own 2017 HD as it's being an ignorant pos even just stock. I have a ghost timing pull I can't figure out and neither can a couple "pro" tuners either.... not to mention I can make table changes and it just does whatever it did before like I did nothing at all. I think I am missing tables as well to maybe handle my complaints...I have a cam and a phaser limiter sitting here but until this gets sorted out I am not putting it in to fight with some junk that wont run right.

Take efilives forum board. In 8 years the section dealing with the e78 ecm has gotten 4 pages of questions... so under 200. Since the e92s release in 2013 that section has 297 pages of questions and counting. Now what would you focus your efforts on lol.

Thanks for the info, i will def ask those questions if i decide to go this route. Explains why the bully dog tuner i bought was worthless lol

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i82much · September 20, 2018

Not that anyone gives a crap, but I need to adjust the choke on my Holley double pumper one of these days.

SierraHD17 · September 21, 2018

Best way to adjust a choke is remove it and throw it in the garbage lol. My Holley and Quickfuel are happy without one.

i82much · September 22, 2018

On September 20, 2018 at 5:33 PM, SierraHD17 said:

Best way to adjust a choke is remove it and throw it in the garbage lol. My Holley and Quickfuel are happy without one.

i like them, i actually got both of mine right! one is on a plow truck, lets me go straight to work. the other is on a hot rod, lets me get out of the driveway asap while the baby is sleeping.

but nothing beats the remote start on my 2500hd. that is just the cat's meow right there!

SierraHD17 · September 22, 2018

Getting them right is the trash lol... but then I don't carbed junk anymore either lol. The one on my buddies Camaro is set right too... but its fitting on a quadrajet on a sub 200 hp 350 lol.

Edited September 22, 2018 by SierraHD17

2016HD · September 22, 2018

On 20/09/2018 at 5:33 PM, SierraHD17 said:

Best way to adjust a choke is remove it and throw it in the garbage lol. My Holley and Quickfuel are happy without one.

If you can fire up your carbed vehicles in the middle of winter or anything under 10deg. and it will idle and drive away cleanly in under a minute. Your idle circuit is way to rich.. And you are using to much fuel under normal operating conditions. To rich at idle.

A correctly tuned carb will run perfectly with a good choke setting and correct jetting under all situation. Only reason to not use a choke is not knowing how to set one up. Or a race engine that doesnt require it.

Not picking on anyone. But a well tuned carb will run almost as good as Efi. Even in the cold.

SierraHD17 · September 22, 2018

I dont own a carbed engine that isn't a race setup....sorry dont care about dailying old stuff like that or running it when its winter.... How this pertains to 2015 and newer HDs is kind of lost lol. Even the last 2 carb setups I have are going efi... carbs are only good for people scared of technology or required by racing sanctions to use them.

Edited September 22, 2018 by SierraHD17