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Old 10-18-2021, 06:46 AM   #1
ruby2010
 
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Does this sound normal tune/trans

Recently had the car dyno tuned after some bolt on's. From what Ive read everyone says from the factor the 6l80's are tuned like shift and after a tune there is a huge difference. I honestly do not notice much other then maybe little firmness under heavy throttle shifts. I also noticed there is now a longer delay when using the tap shift. Other then setting air fuel, decreasing torque management , tuning out O2's for headers don't think he did anything or even a good tune at that and a definite waste of time and dyno money.
Anyone experience this before? I know a improper tune will send a 6l80 to a early grave but the longer delay in tap shifting etc has me hating the tune. And no I'm not going back to the tuner, they've been around 20+'s yrs and if you cant get this right first try idk. Honestly feel they just benched tuned it and it didn't go on the dyno
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Old 10-20-2021, 09:53 AM   #2
ruby2010
 
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Nobody with any insight?
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Old 10-21-2021, 05:41 AM   #3
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I had mine remote tuned by GPI and then dyno tuned by a local shop. Even the remote tune significantly increased the firmness. So I pulled the tune with hp tuners and looked at what they did. They increased the max pressure and the adaptive oncoming pressures. If you get hp tuners you could easily do this yourself and not have to mess with the tuners. Now I don't know about your engine side of the tune and how it runs because there is a lot of things that you can do that will hurt the engine there. If it runs good then I would recommend getting hp tuners and doing the tranny tuning yourself but if it doesn't run perfect then I would just get another dyno tune.
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Old 10-21-2021, 11:20 AM   #4
ruby2010
 
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Quote:
Originally Posted by morepowerjoe View Post
I had mine remote tuned by GPI and then dyno tuned by a local shop. Even the remote tune significantly increased the firmness. So I pulled the tune with hp tuners and looked at what they did. They increased the max pressure and the adaptive oncoming pressures. If you get hp tuners you could easily do this yourself and not have to mess with the tuners. Now I don't know about your engine side of the tune and how it runs because there is a lot of things that you can do that will hurt the engine there. If it runs good then I would recommend getting hp tuners and doing the tranny tuning yourself but if it doesn't run perfect then I would just get another dyno tune.
Think ultimately Iím going to have to get to another tuner and have it gone over for at least peace of mind. When asked if he did shift points he gave me some run around answer and thatís when i knew went to the wrong shop, and itís a GM thatís been around for decades
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Old 10-21-2021, 05:11 PM   #5
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I would find another tuner. Back when we did my LT install and dyno tune they did the trans as well and the difference in what it was stock to the tune they did to the trans was night and day different!! Higher shift points, firmer shift pressure at WOT, and also at normal driving it would shift a whole lot better than the stock tune.
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Old 10-22-2021, 09:12 AM   #6
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tuning issue i would think
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