Two auto 99 LD9s and various other differences...in stock tunes... - Tuning Forum

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Two auto 99 LD9s and various other differences...in stock tunes...
Monday, February 06, 2012 10:57 AM
I have been going over my "stock" tunes and noticed that on one of the 99 automatic Z24's it has an injector constant of 0.20250 and the other 99 automatic Z24 has an injector constant of 0.20014. Anyone have any idea why they are different? Reason being is my teal Z24 is running richer on the "stock tune from the red Z24." For obvious reasons.

Also there are a TON of other tables that are slightly different. I uploaded a picture for reference.

Any thoughts why?






Edited 2 time(s). Last edited Monday, February 06, 2012 11:05 AM
Attachments
99 vs 99.gif (86k)




Re: Two auto 99 LD9s and various other differences...in stock tunes...
Monday, February 06, 2012 11:47 AM
Mike, I have no idea as to why they are different but I can say that the inj constant I have ALWAYS pulled up on stock N/A LD9's has been 0.20250, never seen the other one.

-Chris-


-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
Re: Two auto 99 LD9s and various other differences...in stock tunes...
Monday, February 06, 2012 12:50 PM
Any thoughts on why a ton of other tables are just slightly different?





Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 9:40 AM
Mike, you sure you're looking at the same tables on both? The ones you pictured are all different. One is High octane, the other is low. On the Idle spark, one is alcohol, the other is not.

No clue about the injector constant differences. My stock 00 auto LD9 had the usual .20250 Maybe the oddball one was serviced a while back for an issue and they reflashed it to try and correct something. Both running the same exact injectors?



12.6 @ 114.6 MPH

Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 9:41 AM
EDIT: Nevermind, i just noticed those were all showing the compare differences. Yeah IDK, maybe one just got a reflash at some point or someone "tuned" one before you got it.



12.6 @ 114.6 MPH

Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 9:49 AM
Matt can you email me a copy of your 00 auto file. Just so I can see if it is close to one of my files.







Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 12:05 PM
I was thinking the same thing...maybe it was serviced and adjustments were made or there was an attempt to tune it previously.


GMR has got nothing on this
Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 12:29 PM
Was not tuned. It was serviced its entire life at the local dealer. I bought it off an old couple that had it since new, and were the only owners. It was my mom's neighbors car when I was growing up. lol

The dealer would be the only one that had access to change anything.







Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 12:38 PM
-MD- Enforcer wrote:

Matt can you email me a copy of your 00 auto file. Just so I can see if it is close to one of my files.

Sent



12.6 @ 114.6 MPH

Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 12:51 PM
Matt thanks. Yours is the same as mine on my Teal Z.

Now I just need to re-flash and change the vin number on the red Z's computer.





Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 1:22 PM
Never seen that constant before, but for the other changes I would not be surprised. I was always told GM had many different calibrations for our cars.



FU Tuning




Re: Two auto 99 LD9s and various other differences...in stock tunes...
Tuesday, February 07, 2012 1:30 PM
I should check the cal number on the PCM's and see if they are different. I have three 99 PCM's.





Re: Two auto 99 LD9s and various other differences...in stock tunes...
Monday, February 13, 2012 11:42 AM
What would be the stock injector constant for a 2002 Z24?


GMR has got nothing on this
Re: Two auto 99 LD9s and various other differences...in stock tunes...
Monday, February 13, 2012 11:51 AM
.20250....is the stock constant for an LD9.






Re: Two auto 99 LD9s and various other differences...in stock tunes...
Monday, February 13, 2012 12:01 PM
Even on a 2002 with the skinny injectors? Whats the term for the difference skinny and fat?? EV???


GMR has got nothing on this
Re: Two auto 99 LD9s and various other differences...in stock tunes...
Monday, February 13, 2012 12:41 PM
99-02 are skinny injectors...





Re: Two auto 99 LD9s and various other differences...in stock tunes...
Monday, February 13, 2012 1:06 PM
Okay thanks


GMR has got nothing on this
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