2nd gear chirp, downshifting issue - Pontiac G8 Forum: G8 Forums - G8Board.com
 
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post #1 of 13 (permalink) Old 12-08-2012, 12:55 AM Thread Starter
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2nd gear chirp, downshifting issue

So it seems like every video I watch of a 0-60 run, people spin a little off the take off and then chirp second. I bought my car used, and now has 82k miles on it. The previous owner said he had it tuned at VMS, but I contacted VMS and they had no paperwork stating my car had ever been in there. It does have a CAI, but is stock other then the supposed tune and the cold air (not sure why someone would lie about the tune, and tell me he had it on their dyno?). It does have brand new tires on it, but It has a hard time spinning off the bat, and definitely does not chirp in second. Also, If im crusing at 40 or 50 and hammer it, it doesnt really down shift like it should. It more or less just starts to take off slowly until it hits the power band. Sometimes it downshifts and takes off, and others it wont. Any one have any experience with this, or any recommendations or suggestions on what could be wrong, if anything?
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post #2 of 13 (permalink) Old 12-08-2012, 01:08 AM
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Mebbe it doesn't have a tune. Your altitude may be a factor also since you didn't state where you live.

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post #3 of 13 (permalink) Old 12-08-2012, 01:11 AM Thread Starter
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Oh sorry, I'm from Michigan..an hour north of detroit. You think id have a little less traction and a little more HP with the 30-40 degree weather going on right now.
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post #4 of 13 (permalink) Old 12-08-2012, 07:13 AM
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Sounds like a stock tune to me.
Everyone states their cars have tune jobs...or chips.
If it was me, I'd ask for a Livernois ECM/TCM tune for Christmas.
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post #5 of 13 (permalink) Old 12-08-2012, 08:49 AM Thread Starter
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Quote:
Originally Posted by Eric_GT View Post
Sounds like a stock tune to me.
Everyone states their cars have tune jobs...or chips.
If it was me, I'd ask for a Livernois ECM/TCM tune for Christmas.
I figured. I dont get the point to lying about that though lol, its not like its a make or break deal. How much is the livernois tune? I'm only about a half hour from them.
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post #6 of 13 (permalink) Old 12-08-2012, 01:06 PM
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For the downshifts use sport mode. It'll hit the right gear 99% of the time. I have a Vcm tune and I'll chirp 2nd all day and it'll smoke em into 2nd in manual mode.

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post #7 of 13 (permalink) Old 12-08-2012, 01:30 PM
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Sounds Stock. Make sure your traction control is off.

It's a GT.
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post #8 of 13 (permalink) Old 12-08-2012, 04:23 PM
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However, IF it does have a Vector tune your ECM is locked tighter than Fort Knox. Nobody else will be able to tune it until it gets unlocked.


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post #9 of 13 (permalink) Old 12-08-2012, 08:50 PM
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Where exactly are you in michigan. If you wanted I could meet up with you and could be able to tell you if its tuned or not. Stock to a tuned GT are night and day differences. Yours sounds like it isn't tuned.

If the shifts are really soft then its def not tuned.

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post #10 of 13 (permalink) Old 12-08-2012, 10:03 PM
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Quote:
Originally Posted by BB16 View Post
I figured. I dont get the point to lying about that though lol, its not like its a make or break deal. How much is the livernois tune? I'm only about a half hour from them.
5 Bills if I remember correctly. I wish I was a half hour from them.
Id have my car there like a McDonalds drive up window!
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post #11 of 13 (permalink) Old 12-08-2012, 10:37 PM
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All good input! I don't think it is tuned neither... Just on a cortex tune right now and i will chirp 1-2-3... And I can get it to really let loose going in to second if I want it to!

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post #12 of 13 (permalink) Old 12-10-2012, 12:27 AM Thread Starter
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Thanks for all the responses guys. It really makes a difference when i put it in sport mode.


Quote:
Originally Posted by MotorCityG8 View Post
Where exactly are you in michigan. If you wanted I could meet up with you and could be able to tell you if its tuned or not. Stock to a tuned GT are night and day differences. Yours sounds like it isn't tuned.

If the shifts are really soft then its def not tuned.
The shifts arent that soft honestly. I'm from shelby twp. I'd definitely be interested in meeting up sometime soon if you had some time to kill. Your car sounds badass, i'd love to see it. I appreciate that offer.
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post #13 of 13 (permalink) Old 12-10-2012, 08:42 AM
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Quote:
Originally Posted by BB16 View Post

The shifts arent that soft honestly. I'm from shelby twp. I'd definitely be interested in meeting up sometime soon if you had some time to kill. Your car sounds badass, i'd love to see it. I appreciate that offer.
Thanks. No problem, PM sent.

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