The Fugitive

iTrader: (6)

So I went to get my meth kit put in with some dyno tuning. Well before I took the car there it would hit the rev limiter. The issue is that while on the dyno the car won't hit redline 2nd gear goes to 6000 3rd goes to 4600 and 4th hits like 5200 the car pulls hard and steady until it hits those points and they say that everything looks good and can't figure out why it's doing it. I am going to try to get the tune that they put into my car tomorrow and post it but I am stumped also now I have no 1st or 4th gear and it feels like it either starts in 2nd or 3rd and having a 4L80 with a 3600 stall isn't nice on the wallet this time of the year with gas prices. Thanks for the help guys

Frost

iTrader: (45)

lots of things that can cause this behavior int he tune, but if you aren't tuning the car yourself or own tuning software, no one here can really help you but so much...

The Fugitive

iTrader: (6)

if at all possible would sending logs and the tunes help?

rpturbo

iTrader: (47)

Sounds like it's in limp mode. Maybe a bad sensor on the trans, or maybe it's just not reading it. Maybe take it out and put it back in, clean the connection. You said while it's on the dyno, does that mean thats when it started, or thats the only time it does it? Maybe it is in the tune too.....

The Fugitive

iTrader: (6)

that is what I am thinking, the part that sucks is trying to figure out why it keeps going into limp mode. I don't remember it doing that before putting it on the dyno but I wasn't getting on it all the time as I was waiting for it to get put on the dyno. But also there was a change in elevation (GA to NV) from the previous tune to the one I got on the dyno. I am going to be taking to a shop to see if they can check the connections because I don't have a suitable place to do the work with the weather acting crazy here

The Fugitive

iTrader: (6)

here is the tunes and scans