wait4me tune, send it back now or wait ?

454ss · May 20, 2006

just put my tune in and was wondering if you guys that have one could tell me if you noticed anything improve after putting on a few miles and getting the crank re-learn done, compared to when you first put it in and went for a test drive. so far i am not really impressed, kind of pissed actually, my truck has had a trans-go shift kit in it since new and it would always chirp the tires on the 1-2 shift and sometimes on the 2-3 shift, now with the tune in it wont get rubber on the 1-2 shift let alone the 2-3 shift. throttle response may be slightly improved, but i cant believe this thing is right, with all of the tm supposedly removed i would think i would notice a perfomace increase off the line and the shifts should be even stronger if im getting more hp/tq to the wheels. maybe i expected too much, but i am deffinately not happy with how my tranny shifts now and i even told jesse he could firm it up a little more. ive been driving it like a rental car hoping it will come to life and ill get the relearn done on monday, if nothing changes after that its going backfor sure.

454ss · May 20, 2006

now im kind of worried about having the crank re-learn done, the service dept at my dealer doesnt seem to know what im talking about and said it was $80 bucks to do a computer flash and he didnt know if it would change anything else. i told him i had a perfomance tuned pcm and just needed a crank sensor re-learn procedure done and he said he may not be able to do anything with a aftermarket tune, WTF ? what did you guys tell the service dept when you had yours done ?

pwall · May 20, 2006

I just installed my 'tuned' PCM on Thursday night. I went to a local garage and they did the 'crank sensor re-learn' in about 5 minutes.

But like you, so far, I'm not happy with it at all.

To be honest, I don't notice any difference at all. But it's been raining since I put it in so I'm holding my judgement until the roads are dry and I can really test out the truck.

Halen5150 · May 22, 2006

I had the local GM dealer do a re-learn for me, and they didn't even charge me for it. It literally takes less than five minutes to do. Do not let them reflash your pcm. I just told the dealer that I had a new pcm put in and I needed a crank position relearn to get rid of the SES light.

As for the tune...I got one for 89 octane and noticed a difference immediately. The only other performance mods I have are intake and exhaust. I can usually chirp the tires in 2nd if I try hard enough. I'd drive it for about 250-300 miles, and then send it back if nothing changes.