I had to have my PCM replaced in my 2006 SRT-8.
The good and bad.
1. The good part. The engine now has excellent engine braking. Before it was very hard to slow down the SRT-8 using the engine. Now when you downshift to 1-4th gear the throttle body will gradually kick in full closed position after 5-6 seconds of coasting. I'm very happy about this as I can drive down mountain passes without braking now. The engine braking is now about triple what it was. It would be nice to cut out the 5-6 second delay all together.
2. The 1-2nd gear WOT shift point is about 150 RPM lower now. 2-3rd is about 100 RPM lower. Overall this made my SRT-8 about .1 second slower at the track. It seems the new PCM has the first/second shift hesitation TSB already installed.
The good and bad.
1. The good part. The engine now has excellent engine braking. Before it was very hard to slow down the SRT-8 using the engine. Now when you downshift to 1-4th gear the throttle body will gradually kick in full closed position after 5-6 seconds of coasting. I'm very happy about this as I can drive down mountain passes without braking now. The engine braking is now about triple what it was. It would be nice to cut out the 5-6 second delay all together.
2. The 1-2nd gear WOT shift point is about 150 RPM lower now. 2-3rd is about 100 RPM lower. Overall this made my SRT-8 about .1 second slower at the track. It seems the new PCM has the first/second shift hesitation TSB already installed.
