Almost embarrasing track times!
04-17-2009, 07:51 PM
#1
Almost embarrasing track times! Well, took my car to the strip for the first time, not too happy lol.
Car is a 1999 WS.6 A4. Has 150,000 miles. 3.23 rear gear
Slp lid and smooth bellows.
Diablo tuner
Ported throttle body (not great)
!AIR !EGR !Front swaybar
cutout
Car still has bone stock exhaust with cats on, with a cutout in the Ipipe.
13.85 @ 98.23 MPH (wtf) 2.166 60ft, no spinning at all
Got back to the pits and wanted to check the trouble coudes.
I figured a few would be for !AIR !EGR, which they were, but there was also codes P0137, and P0157. It said low 02 sensor voltage, banks 1 & 2.
Ill have to look into these, but does anyone else have any suggestions. Why is my car only trapping 98 MPH, that is sad.
Car is a 1999 WS.6 A4. Has 150,000 miles. 3.23 rear gear
Slp lid and smooth bellows.
Diablo tuner
Ported throttle body (not great)
!AIR !EGR !Front swaybar
cutout
Car still has bone stock exhaust with cats on, with a cutout in the Ipipe.
13.85 @ 98.23 MPH (wtf) 2.166 60ft, no spinning at all
Got back to the pits and wanted to check the trouble coudes.
I figured a few would be for !AIR !EGR, which they were, but there was also codes P0137, and P0157. It said low 02 sensor voltage, banks 1 & 2.
Ill have to look into these, but does anyone else have any suggestions. Why is my car only trapping 98 MPH, that is sad.
04-18-2009, 03:35 PM
#3
Yea, i was definately dissapointed with trap speed, rather than the actual ET. Im pretty sure i dont have any vacuum leaks, i think it may have something to do with those codes for the 02 sensors. I would definately think an ls1 with a cutout, lid, and canned tune could over 100 MPH in the quater. Altitude is basically sea level (indiana). It was about 70 some degrees out, the car was heat soaked although.
04-18-2009, 04:45 PM
#4
Well, turns out you shouldnt put a cutout on a bone stock exhaust with stock cats lol. The cutout is what was causing the codes, and therefore making it run lean(er). I guess i didnt notice because it sounded louder, definately lost some torque though. Maybe thats where my MPH went?
04-18-2009, 08:38 PM
#7
Those DTCs are for the catalyst monitors. They are reporting a low voltage signal to the PCM. They do not in any way affect the fueling of the car, and cannot cause it to run lean. They monitor the catalyst efficiency, that's it. Malfunctioning rear O2s will not cause performance issues.
Why is your car down on power? Well, since it's 10 years old with alot of miles, it could be anything.
Finally, forget about any torque that you think you may have lostwith the cutout. Increasing that low end torque won't help your low trap speed.
Why is your car down on power? Well, since it's 10 years old with alot of miles, it could be anything.
Finally, forget about any torque that you think you may have lostwith the cutout. Increasing that low end torque won't help your low trap speed.