hptuners helping friend out
#1
New Member
Thread Starter
hptuners helping friend out
I have hptuners and have tuned LS stuff (6 cars to be exact).
My buddy brought me his car to tune for him, he just purchased this 06 cobalt SS. When he got it, it ran decent but needed some love. The intake filter was destroyed and clogged up and was throwing o2 sensor code. They cleaned the throttle body, put new o2 sensor in it, new air filter, and new maf. Car runs worse now that it did before, LTFT seems to be disabled and STFT is 20-30% off.
I downloaded a stage 2 and stock tune file off the repository. The tune was far off from stock and almost exactly the stage 2 tune except injector data was a little off. But close
Aftermarket exhaust, intake, and maybe injectors. The injectors are siemens injectors, but are not sure the flow rate.
Any help on where to start getting this car to idle and run decent? Thanks!! Virtual VE isnt the same on this car and seems like the PE settings are way different too. Thanks
My buddy brought me his car to tune for him, he just purchased this 06 cobalt SS. When he got it, it ran decent but needed some love. The intake filter was destroyed and clogged up and was throwing o2 sensor code. They cleaned the throttle body, put new o2 sensor in it, new air filter, and new maf. Car runs worse now that it did before, LTFT seems to be disabled and STFT is 20-30% off.
I downloaded a stage 2 and stock tune file off the repository. The tune was far off from stock and almost exactly the stage 2 tune except injector data was a little off. But close
Aftermarket exhaust, intake, and maybe injectors. The injectors are siemens injectors, but are not sure the flow rate.
Any help on where to start getting this car to idle and run decent? Thanks!! Virtual VE isnt the same on this car and seems like the PE settings are way different too. Thanks
The following users liked this post:
Josh Manning (06-27-2017)
The following users liked this post:
Josh Manning (06-27-2017)
The following users liked this post:
Josh Manning (06-27-2017)
The following users liked this post:
Josh Manning (06-27-2017)
The following users liked this post:
Josh Manning (06-27-2017)
#7
Senior Member
iTrader: (6)
He needs to log things differently to understand what's going on. The setup for an LS motor isn't good for the LSJ.
His MAF values match the MAP and TPS changes which makes me think the ECU is trying to make something work for a given throttle position
His MAF values match the MAP and TPS changes which makes me think the ECU is trying to make something work for a given throttle position
The following users liked this post:
Josh Manning (06-27-2017)
#8
New Member
Thread Starter
Sorry haven't replied back yet. I do need to set my log differently for sure, as soon as I connected to this vehicle it cleared all my channels to what's there an just logged quick. I haven't changed the file yet any. Just compared to a few in the repository and it matched perfect to a stage 2 except injectors were little bigger than stage 2. Going to take a guess and say they are Siemens 50$. But guessing these are just like any other. Pull the connector off and I can search the injector #.
#9
New Member
Thread Starter
My ve vs fuel trim chart that I use in scanner. I'll just use the same way and paste into ve table times half into chart?? For tuning the fuel that's way off.
#10
New Member
Thread Starter
So ive got the Furl trims way closer and its idling great, but on startup for about 3-6 seconds it still has to search to find idle going from 400-1500 rpm. then its perfect, what am i missing or doing wrong?
#11
New Member
Thread Starter
Also maf fail is set to 1 and the CEL are disabled for maf trying to tune the VE still.. But wanting to get idle right before moving onto the maf tuning
#12
Senior Member
iTrader: (6)
http://www. red line forums.com/forums/tuning-electronics/40891-maf-ve-tuning.html
take the spaces out and go there. sorry to sound like a dick but it seems like you're way over your head for tuning an LSJ. You don't have any of the tables setup correctly to match the ECU axis, I can't tell if your logging AFR% error or VE% error.
take the spaces out and go there. sorry to sound like a dick but it seems like you're way over your head for tuning an LSJ. You don't have any of the tables setup correctly to match the ECU axis, I can't tell if your logging AFR% error or VE% error.
Last edited by ECaulk; 06-27-2017 at 10:26 PM.
#13
New Member
Thread Starter
http://www. red line forums.com/forums/tuning-electronics/40891-maf-ve-tuning.html
take the spaces out and go there. sorry to sound like a dick but it seems like you're way over your head for tuning an LSJ. You don't have any of the tables setup correctly to match the ECU axis, I can't tell if your logging AFR% error or VE% error.
take the spaces out and go there. sorry to sound like a dick but it seems like you're way over your head for tuning an LSJ. You don't have any of the tables setup correctly to match the ECU axis, I can't tell if your logging AFR% error or VE% error.
And its not being a dick if you help :P that's why i came here, if i knew what i was doing i wouldn't of joined this page for a car i don't own. Im not making any money and spent the 90$ on credits to unlock the car just to help my friend out, its very hard to drive the car and it was just going to hurt it driving running that lean. Plus I only have one leg now and havent drove a 5 speed in 3 years.. But i might try with this car haha
Thanks for all the help tho guys