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Vette Shift Module?

Spurshot

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Spurshot Senior Enthusiast

Spurshot

Posted
Posted

Something's still buggin me with my 08 Vmax. I had Justin tune it and I had thought it still had a engine/fuel flat spot. But on further investigation by driving it while manually shifting, it's clear that it's a transmission downshift delay. Justin did provide a TCM tune as well and it did take about half of the delay out. But I'm still not satisfied with the hesitation upon throttling up for merging/passing.

 

I've noted the mod to install a Vette shift module on the 4L60. I have the 4L70. Would this mod help my situation? What does the Vette module do for you?

 

Thanks

Chuck

ryan_hermanutz Senior Enthusiast

ryan_hermanutz

Posted
Posted
Something's still buggin me with my 08 Vmax. I had Justin tune it and I had thought it still had a engine/fuel flat spot. But on further investigation by driving it while manually shifting, it's clear that it's a transmission downshift delay. Justin did provide a TCM tune as well and it did take about half of the delay out. But I'm still not satisfied with the hesitation upon throttling up for merging/passing.

 

I've noted the mod to install a Vette shift module on the 4L60. I have the 4L70. Would this mod help my situation? What does the Vette module do for you?

 

Thanks

Chuck

 

What percentage of the TM did B.B. remove? That could be all it is.

C. Charles Hahn Senior Enthusiast

C. Charles Hahn

Posted
Posted

I'd talk to Justin and see if he can tweak your tune a bit.... that may help sufficiently. Even if you do install the 'vette servo, the tune will need to be modified to compensate for it.

brims Senior Enthusiast

brims

Posted
Posted

I would talk to Justin as well, but the Corvette servo will work in the 4L60, 4L65, and 4L70 transmissions.

 

Not sure if the servo would do anything about a delay, it sounds more like programming to me.

Spurshot Senior Enthusiast

Spurshot

Posted
  • Author
Posted

I'm already in contact with Justin. But, if a Vette servo can help idealize the shifting situation, I'll get one before Justin comes out and tunes my truck. So, what can a Vette servo do for me.

 

Thanks

Chuck

stadt11 Senior Enthusiast

stadt11

Posted
Posted

Justin's an awesome guy, he'll get it right for sure! He can answer all your questions that you have, even your question about the servo. Just mention it to him, he'll be able to tell you if it'll help what's bugging you or not.

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