LS2 Not running as powerful...
LS2 Not running as powerful... I have a 2008 Trailblazer SS 2WD: K&N CAI, 160* tstat, mds wires, tr6 plugs and a shiftkit. Bone stock i ran a 13.9 at 98 with a 2.1 60 ft in 55* weather. I took the truck to the track yesterday and ran a 14.7 at 94 with a 2.2 60ft in 95* weather. I wanna know what the hell is going on. Plugs are gapped to around 30/35. A times between 4k-5k rpm it feels like i dont have as much power as before. then at around 5k it pulls a little more. I know a tune would help BIG TIME cuz it seems as if the ECM is limiting power. ECM might be reading the IAT and TPS and Trans Temp and limits power near highest torque and limits power... who knows!
I need your input! Thanks!
I need your input! Thanks!
I have a 2008 Trailblazer SS 2WD: K&N CAI, 160* tstat, mds wires, tr6 plugs and a shiftkit. Bone stock i ran a 13.9 at 98 with a 2.1 60 ft in 55* weather. I took the truck to the track yesterday and ran a 14.7 at 94 with a 2.2 60ft in 95* weather. I wanna know what the hell is going on. Plugs are gapped to around 30/35. A times between 4k-5k rpm it feels like i dont have as much power as before. then at around 5k it pulls a little more. I know a tune would help BIG TIME cuz it seems as if the ECM is limiting power. ECM might be reading the IAT and TPS and Trans Temp and limits power near highest torque and limits power... who knows!
I need your input! Thanks!
I need your input! Thanks!
I pretty much did but I would have never imagined that it would change that much! I'm going to go back to my old plugs and get an oil change that I should have gotten 3k miles ago.. we'll see.
Do you have a scan tool to log data? The TB SS is very sensitive to intake track changes. A CAI absolutely needs a tune to go with it. As mentioned above the LS2 has very aggressive IAT and ECT spark reduction values as the temperatures increase. It will reduce spark as much as 8 degrees in some cases. A tune can reduce the values in these tables so it's less sensitive to heatsoak.
Do you have a scan tool to log data? The TB SS is very sensitive to intake track changes. A CAI absolutely needs a tune to go with it. As mentioned above the LS2 has very aggressive IAT and ECT spark reduction values as the temperatures increase. It will reduce spark as much as 8 degrees in some cases. A tune can reduce the values in these tables so it's less sensitive to heatsoak.
I have a tech 2 and ill scan it with that! Ill see what happens and update! A tune is for sure the next mod! Thanks a lot. Anymore info would help too.
