Custom Tune Installed

[Chris74]

Originally Posted by JackandJanet

Darren, unless you know something I don't know (which is VERY possible), the HP and torque are dropping on our engines above 5000 RPM. If you look at your WOT shift points in the custom options menu, I think you'll find that Bill has set the 1-2 and 2-3 shifts near that RPM range. If so, I would not raise them. The 3-4 shift is likely to be lower, possibly around 4500? Again, I would not raise it. I tried raising mine and discovered it seemed to have trouble completing a WOT 3-4 shift, even though my max RPM was 5400.

I also wouldn't raise the max RPM much above 5400 because of TC ballooning, and I like to keep the stress off the transmission as much as possible.

I have my speed limiter set at 110 mph. Net because I really expect to drive that fast, but I DO NOT want it to ever kick in when I'm expecting more speed, as in passing.

I've had my truck dynoed........and with my setup, I was still building power at 5000 rpm's.

My power actually topped out around the 5200 mark.......