Weird shifts

[c5fourj]

OK so, after driving for extended ish periods of time, 45-60 minutes, at highway speeds, when I get off of the highway for about 1-2 miles i will have up revs at almost every shift be it in a tune or my stock level tune. Driving around normally i don't get them so I am at a complete loss. No codes at all, and when it shifts it is a strong shift, it doesn't just slowly fall into gear.
I don't have a data logger so Diesel Day Dreams will be logging it Monday. Was hoping to get some insight from you guys and be able to give the shop some info to steer them in the right direction. Thanks for any possible information.

 

[Chevy1925]

Built trans or stock? On a 100% stock tune it still does this issue?

 

[c5fourj]

Built. It was on the stock power tune on the dsp5 and on a higher hp tune.

 

[Chevy1925]

put a 100% stock tune in it and see if the issue goes away, not the dsp stock tune

 

[SickLL7Crenshaw]

put a 100% stock tune in it and see if the issue goes away, not the dsp stock tune

X2 what James said.

 

[c5fourj]

Ok.

 

[Chevy1925]

does it have a trans tune as well?

 

[c5fourj]

To my knowledge yes.

 

[Chevy1925]

To my knowledge yes.

put a stock tune back in that as well.

 

[c5fourj]

I will ask them to try putting the tunes back to stock and see what comes of that. Thanks again for your input.

 

[Mike L.]

Shouldn't DDD be working on this? He knows what was done.

 

[IOWA LLY]

Who is DDD?


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[c5fourj]

Yes they will be. Was simply trying to gather some info from you guys to maybe help steer them. When I went there the other day they had no clue why it would be doing what it is doing, so I was trying to gather information before they data logged it, and or seeing if someone on here had the similar problem with a fix.

 

[c5fourj]

Who is DDD?


Diesel Day Dreams.

 

[IOWA LLY]

Ok. It’s never a good sign when the shop that built it is at a loss. I hope for your sake you don’t need this forum to help the builder figure this out.


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[c5fourj]

Shouldn't. Was wanting to inquire some info myself as I'm a big noob. They said when it happens the data log will show what happens so for now I'm not worried. They haven't even looked at it yet which is why they are unsure.