Sounds like you finally increased the power enough to lower your tps and finally shift into 4th.
Type: Posts; User: Ranger6202
Sounds like you finally increased the power enough to lower your tps and finally shift into 4th.
timing won't affect the speed vs. RPM ratio. Speed and RPM is directly based off of tire size, gear ratios and transmission gearing. A timing change would do something like this for you....."cruising...