Is it probable that my sct x3 by vmp is destroying my trany? Ever since I got a new tune from him my truck has hummed in the lower rpms.

 

A hum by itself doesn't mean anything. Do you have any other mods, like a CAI?

- Jack

 

did you firm up the shifts???

 

I don't have q Cai. But I have cat back exhaust, its coming from the trany or front end. I did firm them up in the past. But took it back down.

 

Would firming the shift points hurt the trans? I'd like to know too.

 

I raised my shift points and had no problems, it's been a year now runs great no problem with trany.

 

Firmer shifts=less clutch slip and that is a good thing because to much slip and you burn the clutches up if you adding more power. But to add to that to hard of a shift and there is no give when everything locks up and you will start damaging parts.

 

There's a balance......and every truck out there is different as to how it will effect it.....

 

I don't think the firmness worked anyway

 

using a tuning device to firm up the shifts you stress the pump

 

Curious why all these custom tune shops recommend firm shifts?

 

So could it make it hum

 

Less slippage = less clutch wear = lower fluid temps.

 

^^^
This. OEMs soften the shifts to make it smoother to make everyone happy. So when ur grandma is in the truck shes not complaining how rough it is. Just like all the other little crap they do to kill the party uight not even realize. Like that little waffle cast design insider stock intake box is actually designed to quite the intake rush noise we all like

But a little tranny whine is usually fine unless it's way more apparent than before. Is it actually a trans whine or is it more of a buzzing like a fuel pump just delivering more fuel?

 

No its a mechanical wine at low rpms sounds like a bad belt in a tire. I don't think it would be the fuel pump? It does make weird noises when im downloading a tune tho???