Tuning Help!

[Roadking107]

I’ve a 2014 ZL! Auto. I had a 2.45 grip tech upper pulley ID1050x injectors, Cr racing heat exchanger and JLT CAI installed today. The tuner came to the shop and put in tune for the injectors to street tune the car. He said bank one and two fuel was off but then settled down. Shortly after heading out for the street tune the transmission surged once but then seemed o.k. The tuner decided to tune the transmission and things went downhill from there. The car will not run right and the torque converter is slipping. We went to the chev dealer to reset the transmission. The dealer says their computer doesn’t see the tune and can’t reset the transmission or engine. The car ran fine before tuning. Help please

[JB'sZL1]

Find a new tuner.

Why in the world is your tuner tuning the transmission after all those mods and not first correctly tuning the engine?

What fuel system are you running?

[Roadking107]

Originally Posted by Roadking107

I’ve a 2014 ZL! Auto. I had a 2.45 grip tech upper pulley ID1050x injectors, Cr racing heat exchanger and JLT CAI installed today. The tuner came to the shop and put in tune for the injectors to street tune the car. He said bank one and two fuel was off but then settled down. Shortly after heading out for the street tune the transmission surged once but then seemed o.k. The tuner decided to tune the transmission and things went downhill from there. The car will not run right and the torque converter is slipping. We went to the chev dealer to reset the transmission. The dealer says their computer doesn’t see the tune and can’t reset the transmission or engine. The car ran fine before tuning. Help please

I’m cautiously optimistic. Looks like the shop that installed the parts forgot to tighten the positive battery cable down. I noticed the positive battery cable was very loose I tightened the cable and the car ran much better right away. The tuner reloaded the tune and it seems o.k.