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1-2 shift gets worse after tune

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Old Apr 29, 2005 | 10:13 PM
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Default 1-2 shift gets worse after tune

I had the car tuned and the tm removed to fix the 2-3 delay. The car shifts great now everywhere but wot 1-2. It kinda just slides in and doesn't even spin the tires. With the hypertech It would brake loose on the 1-2 before sometimes. How hard are some of your stock 4l60e shifting. I know it has something to do with the tune b/c I drove it there then our after test drive it sucked but the 2-3 was great. I thinking maybe he used the wrong gear setting or something like that.
Eric
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Old Apr 30, 2005 | 06:18 AM
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mine shifts like crap during each shift. Should I just Zero out my TM table? What else would help.

Not trying to steal the thread as I think we want the same info.
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Old Apr 30, 2005 | 07:50 AM
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Mine is zeroed out. I think I'm at 70% on shift firmness on the tune.
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Old Apr 30, 2005 | 08:12 AM
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Originally Posted by 99SSLS1
Mine is zeroed out. I think I'm at 70% on shift firmness on the tune.
what did you set to 70% ? Is this HP tuners?
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Old Apr 30, 2005 | 08:26 AM
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Not sure what he did, I didn't do it. He either had efi live or edit.
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Old Apr 30, 2005 | 09:06 AM
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not sure what you are tuning with, but with hptuners-

make sure the mph is right- if it is too low and the rpm point is where it should be, the car is going to shift when it hits the last of the 2 thresh-holds (rpm and mph). i've heard this can cause shitty shifting. try upping the mph for the 1-2 shift little by little to see if it gets better or hits the rev limiter.
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Old Apr 30, 2005 | 11:44 AM
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RPM------MPH------TPS%------Timing------KR
1644------9------11------33------0
1738------9------16------30.5-----0
1932------10-----23------31------0
2300------11-----31------31------0
2700------13-----49------30------0
3206------14------59------29-----0
3550------17------65------29-----0
4012------24------74------28-----0
4488------30------80------27-----0
4885------34------80------27-----0
5387------38------80------27.5---0
5749------42------80------28-----0
6180------45------80------28.5---0
6488------47------79------29-----0
6790------48------79------29-----0
7044------52------79------29-----0
7216------51------78------29-----0
6599------48------78------6------0
5896------52------76------6.5----0
5314------62------76------27-----0
5205------65------75------27-----0
5214------65------75------27-----0
5205------63------72------27-----0
5180------64------71------27-----0
5130------62------70------27-----0
5068------61------70------27-----0
5001------58------70------27-----0

Just stopped off to get some parts for the car. Heres my take-of(burnout).

Its weird because my TPS wasnt even that high. Does this mean that it didnt go into PE or what? So what do I change so it shifts when it is supposed to? My WOT shift 1-2 is 6800.
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Old Apr 30, 2005 | 12:11 PM
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you need to re-set the tps sensor, not getting 100% tps is horrible, for performance among other things. try a search for that- i have seen that topic covered before on ls1tech
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Old Apr 30, 2005 | 02:15 PM
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Resetting the TPS doesnt work since im sitting at 0.8 TPS voltage. SO do you think it is off by 20% so the 80 should have been a 100%.

Why is it that at idle the TPS is at 0% then?
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Old Apr 30, 2005 | 04:16 PM
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Were you at WOT? I've never done a smokey burnout with out being at least 50% tps. Perhaps your tps is dead.
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