07 CTS-V Speedometer off after gear change
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Guys,
Need some advice here. I just did the Creative Steel 8.8 swap with 4.10 gears. Now my speedo is off. My tuner says it is supposed to correct itself but hasnt? Anyone here have a clue what i should do to fix this? i disconnected the battery for about five minutes hoping that would help but it didnt.
Thanks,
Brent
Need some advice here. I just did the Creative Steel 8.8 swap with 4.10 gears. Now my speedo is off. My tuner says it is supposed to correct itself but hasnt? Anyone here have a clue what i should do to fix this? i disconnected the battery for about five minutes hoping that would help but it didnt.
Thanks,
Brent
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It would need to be fixed in the ecu tune using hptuners type software or a handheld tuner. Even the stock 07v running stock size tires reads incorrectly as it indicates on the dash a lower speed than the built in gps reads.
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No, the car isn't going to autocorrect it has no idea what size tires or gear ratio is installed in the rear end. All it knows is the transmission speed.
Using the tuning software they can change things like the final drive ratio and tire size to fix such changes. Good luck.
What do you think of the 4.10's? I like the 3.73s but kind of wish it was 3.55 even.
Using the tuning software they can change things like the final drive ratio and tire size to fix such changes. Good luck.
What do you think of the 4.10's? I like the 3.73s but kind of wish it was 3.55 even.
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Auto correct?
Really?
I don't tune and I know that changing the actual physical gears would require a retune on the ECM. He's gonna have to double check his software or Press F1 or something there. lol
Really?
I don't tune and I know that changing the actual physical gears would require a retune on the ECM. He's gonna have to double check his software or Press F1 or something there. lol
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How in the hell are all of these ****-tards charging for tunes? Even worse, why are people paying them?
Get a new tuner that knows where to find the "Speedo" tab in the tuning software. Change the gear ratio and tire height to what you actually have in the specified sections. By entering the rear gear ratio and tire height, it will auto calculate based on the data provided by those two specific parameters (the PCM does not auto-correct anything).
I really need to start tuning for a living...the bar ain't raised too high.
Get a new tuner that knows where to find the "Speedo" tab in the tuning software. Change the gear ratio and tire height to what you actually have in the specified sections. By entering the rear gear ratio and tire height, it will auto calculate based on the data provided by those two specific parameters (the PCM does not auto-correct anything).
I really need to start tuning for a living...the bar ain't raised too high.
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you cant miss the gear/tire table on hp tuners..its one of the first to come up. how do you like those 4.10's though? i feel like i lost a little pep with the 3.55's.. i have 3.73's and 3.90's sitting here just gotta find another carrier and im gonna build another pumpkin to swap out when needed..3.55's are a nice highway gear but i need more power for them to work for me
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you cant miss the gear/tire table on hp tuners..its one of the first to come up. how do you like those 4.10's though? i feel like i lost a little pep with the 3.55's.. i have 3.73's and 3.90's sitting here just gotta find another carrier and im gonna build another pumpkin to swap out when needed..3.55's are a nice highway gear but i need more power for them to work for me