u7195

[chupa-c]

2003 4x4 silverado 5.3 auto

I finally did the 91 octane tune today and I didn't feel any difference from the 87. The power feels the same as before. I couldn't even break the rear tires loose, Does anybody know if I might have done something wrong, I've heard stories of people having to back out of the throttle but not mine. I even tried changing trans shift parameters and still no difference. Please help me.

[mikel]

2003 4x4 silverado 5.3 auto

I finally did the 91 octane tune today and I didn't feel any difference from the 87. The power feels the same as before. I couldn't even break the rear tires loose, Does anybody know if I might have done something wrong, I've heard stories of people having to back out of the throttle but not mine. I even tried changing trans shift parameters and still no difference. Please help me.

Did you use 91 octane fuel with the appropriate tune? If you are looking to break the tires loose, you may want to go into the adjustable parameters section and turn off all of the torque management parameters.

Thanks

[chupa-c]

Yes I am running 91 octane and I did disable all T/M and I still don't feel any difference. I also tried adjusting the trans shift pressure and shift points and I did not feel any change. Will it take a while for the full effect of the tune? At this point I am very disappointed in the performance tune. Please help me so I won't feel like I didn't get what I paid for.

Thank You

[mikel]

Are you sure you are reinstalling the tune properly every time you make a change? It seems really odd that you don't notice ANY difference at all.

Thanks

[chupa-c]

What exactly do I need to do after any changes? The tuner says installing tune and goes through all the key on/key off procedures, then says tune successfully installed. I also noticed trans shift pressures, rpm, and shift speed changes don't do anything neither.

Please help me! I don't want to change to another programmer

[mikel]

What exactly do I need to do after any changes? The tuner says installing tune and goes through all the key on/key off procedures, then says tune successfully installed. I also noticed trans shift pressures, rpm, and shift speed changes don't do anything neither.

Please help me! I don't want to change to another programmer

This is very odd. If you try to raise the shift pressures all the way up, does it still not feel as though it is shifting harder? If not, please call our tech support at 561-908-0040 so we can go over this in detail.

Thanks

[chupa-c]

I'll try raising the pressures more to see what happens, if no change I'll call tech support and see what's going on

[chupa-c]

Still no change what so ever,I bumped the trans pressures all the way up and the truck actually doesn't even feel like it's got any more power than stock. From a stand still it just falls on its face. I really don't have time to call tech support as I work from 8:00 to 5:00. I don't know what to do anymore. I'm very disappointed.

I don't want to give up on the programmer yet. If you can give me some info as to what to set the timing and fuel settings to give me a little more bottom end.
I've messed around a little but not much. I know the tune will be rich at my altitude (4800 ft).