HP Tune files

[ctuinstra]

There are enough of us on here that use HP Tuners so I figured why not share a few of the files for comparison. I'm not suggesting that these files are the fix for your specific issues, but you can use them for comparison sake. Use at your own risk.

1. This first one is (as I am told) a 07 Stock LSJ tune (07 LSJ Stock.hpt)
2. 07 LSJ GM Stage 2
3. Bone stock
4. My Original tune file from ZZP with 60lbs injectors.

 

[Nilbog]

I think we should get a tuning section created!

 

[ctuinstra]

I think we should get a tuning section created!

Adam changed the settings so we can now upload HPT files. I thought that was pretty cool!

 

[Nilbog]

Yeah, thats awesome. Im assuming a few more will be going from NA to charging of some type, and im assuming this site will continue to get more traffic as business grows so i think it would be nice to have the assembly/build right along with the tuning discussion.

 

[ctuinstra]

They finally released the Pro Tools and the interface for the wideband.

 

[Nilbog]

Truly unfortunate they've taken this route simply to hook up a wideband or accessory input.

 

[ctuinstra]

Truly unfortunate they've taken this route simply to hook up a wideband or accessory input.

Agreed, it's a greed.

 

[BaltimoreHokie]

Agreed, it's a greed.

Did you end up modifying the ZZP tune much?

 

[ctuinstra]

I have tweaked quite a few little items. I still need to work on the overall tune, it runs rich. I will be doing it as soon as the weather is better. I was able to get my hands on the book.

 

[BaltimoreHokie]

Yeah, I just wondered, I plan to eventually buy their stage 2 kit. so I wondered if their tune is alright, I hate to buy the kit and buy hp tuners.

 

[ctuinstra]

Yeah, I just wondered, I plan to eventually buy their stage 2 kit. so I wondered if their tune is alright, I hate to buy the kit and buy hp tuners.

I hated what they did with the torque management. Made the car extremely difficult to drive. The best I can tell, our donor came with part of a Stage 2 kit. It already had 60lbs injectors but the stock pulley. The ECM had a sticker on it from ZZP so I know it was tuned by them and as it is, it's a terrible tune. Runs terribly rich and idle surged a lot, that was the first thing we noticed when we drove the donor, it would idle surge all the time. My son even commented on how hard it was to drive smooth in 1st gear and it ended up being worse in the Goblin.

I've adjusted the fuel some but didn't want to get crazy until I could collect data from the O2. I also bumped up the idle speed to 850 RPM from 800 and that made huge differences in the idle. It's hard to get these larger injectors to work well down in the low RPM.

This first graph is what they did to the spark retard for reduce management. It's been zeroed out so there is no smoothing of the torque. This is fine if it's just a drag monster but made the throttle very choppy.

This is the stock and even GM Stage 2 settings.

 

[BaltimoreHokie]

I just tried to look, and I cannot find it but before ZZP redid their page, there was some drop down menu for some type of torque management. it said "none" or "reduce in 1st gear" wonder if the person you bought it from selected that?

 

[JSATX]

I have a lot of misfires after installing the 60lb injectors. But only at idle. Add even a little bit of gas and they go away. So my thought was simply to increase idle speed. That didn’t help, I increased all the way to 1200 just to see if they would go away and they didn’t.

 

[JSATX]

I have tweaked quite a few little items. I still need to work on the overall tune, it runs rich. I will be doing it as soon as the weather is better. I was able to get my hands on the book.

I’ve forgotten which donor you have? I’ve been told the ECU for the turbo is entirely different than all the others.

 

[BaltimoreHokie]

I plan on going with the 80lbs, zzp site says the recommend it for e85 which I'd like to go with. Both Chad and I have 07 SS/SC

 

[BaltimoreHokie]

I just tried to look, and I cannot find it but before ZZP redid their page, there was some drop down menu for some type of torque management. it said "none" or "reduce in 1st gear" wonder if the person you bought it from selected that?

I stand corrected, ZZP does not have that option. its actually OTTP.
http://www.ottperformance.com/store/pc/configurePrd.asp?idProduct=6

 

[JSATX]

I plan on going with the 80lbs, zzp site says the recommend it for e85 which I'd like to go with. Both Chad and I have 07 SS/SC

You’ll have to redo your pump too if that’s the case

 

[BaltimoreHokie]

You’ll have to redo your pump too if that’s the case

Are you sure? I think I saw online that it would be fine?

I saw this as well https://www.cobaltss.net/forums/general-cobalt-68/fuel-sending-unit-e85-safe-326775/

 

[JSATX]

Are you sure? I think I saw online that it would be fine?

Well like everything else it’s subjective...after spending a lot of time on the stock fuel pump with all sorts of little modifications I sure wouldn’t use it with 80s or E85. It’s a $150 upgrade...why not?

 

[ctuinstra]

I’ve forgotten which donor you have? I’ve been told the ECU for the turbo is entirely different than all the others.

Correct. We have the P12 ECM and the turbos have something different, it escapes me now.