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10-15-2017, 11:54 AM
#1
Anyone have a good tune for....
I'm looking for a tune. Something good for (92*@sea level) street/track. Mostly street.
C6 A6 2.56's with a Cai and Kooks headers and catted x pipe to Z06 mufflers 3" pipe all the way and trans tune with better shifting by selection on the console. I have hp tuners and could not find anything good there.
C6 A6 2.56's with a Cai and Kooks headers and catted x pipe to Z06 mufflers 3" pipe all the way and trans tune with better shifting by selection on the console. I have hp tuners and could not find anything good there.
Last edited by handyandy1496; 10-15-2017 at 02:34 PM.
10-17-2017, 12:21 AM
#2
Melting Slicks
You will need to seek a reputable tuner in your area and pay someone to tune it. Were you just uploading random tunes from the repository and running them?
10-18-2017, 07:57 AM
#4
Le Mans Master
I'm looking for a tune. Something good for (92*@sea level) street/track. Mostly street.
C6 A6 2.56's with a Cai and Kooks headers and catted x pipe to Z06 mufflers 3" pipe all the way and trans tune with better shifting by selection on the console. I have hp tuners and could not find anything good there.
C6 A6 2.56's with a Cai and Kooks headers and catted x pipe to Z06 mufflers 3" pipe all the way and trans tune with better shifting by selection on the console. I have hp tuners and could not find anything good there.
92*F is a tough ambient temp to run in as the factory tune starts to pull timing at 86*F. Anywhere from a .52 spark air mass to 1.36, you're pulling 3* out of timing advance. If the headers have already been tuned correctly, unfortunately, you're going to lose most or all of those gains at 92* and upwards. Not much to do with your setup in the actual tune until you can pull IATs back down under 86*F.
10-18-2017, 11:05 AM
#6
If you have HPT, hopefully you know how to use it. You didn't actually say you were trying to download tunes from HPT, as anyone who knows HPT knows you never replace your tune with another tune. You must know how to use the compare feature in HPT
92*F is a tough ambient temp to run in as the factory tune starts to pull timing at 86*F. Anywhere from a .52 spark air mass to 1.36, you're pulling 3* out of timing advance. If the headers have already been tuned correctly, unfortunately, you're going to lose most or all of those gains at 92* and upwards. Not much to do with your setup in the actual tune until you can pull IATs back down under 86*F.
92*F is a tough ambient temp to run in as the factory tune starts to pull timing at 86*F. Anywhere from a .52 spark air mass to 1.36, you're pulling 3* out of timing advance. If the headers have already been tuned correctly, unfortunately, you're going to lose most or all of those gains at 92* and upwards. Not much to do with your setup in the actual tune until you can pull IATs back down under 86*F.
I have a 75 buck cold air box. If its 83 ambient and When I floor it at 90* iat temps get down to 85* iat within 2000 rpm. I was wondering why my timing set at 27 floats down to 24 and up to 28 leveling to 27. I'm probably flirting with that 86* number. All with no real knock seen. This is also at a commanded 11.7 afr. Shouldn't it be somewhere in the 12.6 to 13.0 range?
Last edited by handyandy1496; 10-18-2017 at 11:13 AM.
10-18-2017, 12:35 PM
#7
Le Mans Master
Not impossible to change from 90* to 85* if ambient air is 83*. Usually if you're pushing commanded throttle hard @ 100%, IATs will rise, often 10* higher than ambient. The CAIs are not what you think, any of them, either homemade or expensive aftermarket ones.
Cannot understand at all what you mean by your timing is "set at 27". If you're seeing a fluctuation in timing on a DL at redline, or close to redline:
What are the ECTs?
Did you bump redline?
Was TC/AH on?
What was the actual RPM?
What was the commanded throttle and the relative throttle?
To name some. All of these parameters, at least, have to be known to begin to analyze changes in timing if you expect it to be some value at some very specific point, but it is less than that.
Next - How are you measuring AFR? If you do not have a WB and you are reading the SAE AFR in a DL, that is NOT accurate, at all. It is nothing more than an AFR estimate. There are no capabilities to measure AFR built into a factory engine management system.
Cannot understand at all what you mean by your timing is "set at 27". If you're seeing a fluctuation in timing on a DL at redline, or close to redline:
What are the ECTs?
Did you bump redline?
Was TC/AH on?
What was the actual RPM?
What was the commanded throttle and the relative throttle?
To name some. All of these parameters, at least, have to be known to begin to analyze changes in timing if you expect it to be some value at some very specific point, but it is less than that.
Next - How are you measuring AFR? If you do not have a WB and you are reading the SAE AFR in a DL, that is NOT accurate, at all. It is nothing more than an AFR estimate. There are no capabilities to measure AFR built into a factory engine management system.