On all shifts, Nasty

 

Thanks Fast Gator. I noticed some serious power drop during my shifts last night. I did a few full throttle blasts and a few power brake take offs and when the truck shifts it looses major power. I don't think this will be a big problem on the street but at the track well thats a different story. Thanks again, I was beginning to worry if something was wrong.

 

I'll admit, I HATED the way the trans shifted stock, so I bought the Line Mod Valve and installed it. BIG difference! I have NO chip so the 'torque reduction' is still happening, but much less noticeable. Hell, I even get a 'chirp' outta the 1-2 shift once in a while!

*Seriously considering a chip though. Damn warranty.

 

Hey Nasty, See Sal, he can make you even nastier

 

You are reading my mind. Thanks again.

 

Factory Tech said one time that torque reduction only happens on the 1-2 shift. It could be boost dump that you are feeling...but then again, when that happens you know damn well somethings not right.

Andy G

 

First, some of your power loss is the heat we are experiencing here in the south. Forced induction engines hate heat, and lose some HP due to it.

Second, do some searches on NLOC for "torque reduction". There is some excellent info there (and possibly here also).

From the reading that I have done:

The 4 cylinder mode is only on the 1 - 2 shift. I only get the "exhaust fart", an indication of 4 cyl mode, on the 1 - 2 shift.

The PCM controlled boost dump should only be initiated a) if the PCM 'senses' a problem or, b) if the engine hits the rev limiter. If you have not bypassed or unplugged your dump valve, watch your boost on a WOT run. If the boost falls off at shift(s), your PCM thinks you have a problem. If the boost does fall off (and you're not hitting the rev limiter), disconnect your battery, turn the headlights on to fully 'drain' the system, reconnect the battery and try again. If the boost still falls off, have it checked by a knowledgeable technician.

Hope this helps!