Could a low dyno and bad track times be the result of an A4 2-3 shift hesitation?
11-28-2004, 11:24 AM
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Could a low dyno and bad track times be the result of an A4 2-3 shift hesitation? From a recent post of mine:
I never mentioned that, during the last two runs above, I noticed that there was a slight hesitation at the 2-3 shift. Could that be the result of bad spark plugs or a bad transmission? Could that hesitation be also the reason why my dyno runs have been so low and why my times and mph were so bad? If I do have a bad tranny, then maybe I can get it fixed under an extended powertrain warranty. Thanks in advance for the info.
Originally Posted by damon_Z
My baseline dyno happened a while ago and the 2002 Z28 only had around 13,000 miles on the odometer. Check out the dyno graph below:
At around 46,072 miles and still completely bone-stock, I brought the car to Atco for a baseline quarter mile run. Here were the variables:
- The car had a full tank of gas.
- Each tire had 30-31 psi air pressure.
- Elevation was at -158 ft.
- Temperature was 54 degrees F.
- Relative Humidity was between 76-78%.
- Dew Point was 46.7 degrees F.
- The barometer was 30.09 inHg.
First run was 13.567@103.62; 2.095 60'
2nd 13.512@103.39; 2.107
3rd 13.804@101.84; 2.171
4th 13.687@101.92; 2.126
5th 13.540@101.80; 2.079
6th 13.679@101.84; 2.102
Is my car retarded or something? Why are my dyno numbers so low and why are my quarter mile numbers so horrible? Should I get a dyno tune? At less than 8,000 miles, the dealership replaced my transmission's pressure control solenoid, because I was getting a P0748 code. (The car was intermittently shifting too hard.) The car shifted fine afterwards. Could replacing the solenoid be related to my low power and slow times? Thanks in advance for the info.
At around 46,072 miles and still completely bone-stock, I brought the car to Atco for a baseline quarter mile run. Here were the variables:
- The car had a full tank of gas.
- Each tire had 30-31 psi air pressure.
- Elevation was at -158 ft.
- Temperature was 54 degrees F.
- Relative Humidity was between 76-78%.
- Dew Point was 46.7 degrees F.
- The barometer was 30.09 inHg.
First run was 13.567@103.62; 2.095 60'
2nd 13.512@103.39; 2.107
3rd 13.804@101.84; 2.171
4th 13.687@101.92; 2.126
5th 13.540@101.80; 2.079
6th 13.679@101.84; 2.102
Is my car retarded or something? Why are my dyno numbers so low and why are my quarter mile numbers so horrible? Should I get a dyno tune? At less than 8,000 miles, the dealership replaced my transmission's pressure control solenoid, because I was getting a P0748 code. (The car was intermittently shifting too hard.) The car shifted fine afterwards. Could replacing the solenoid be related to my low power and slow times? Thanks in advance for the info.
11-28-2004, 02:55 PM
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My 2002 WS6 had a 2-3 shift hesitation, and still ran 13.2's @ 104. Never had the car dyno'd, so i don't know how it would compare to yours. I really don't see anything wrong with your times. You have a stock A4 that runs 13.5's, that's pretty good.