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05-09-2006, 07:51 AM #1
Effect of Computer Tuning on 1/4 mile performance
Recent Mods:
Longtube Headers
3" X-Pipe with Dynomax Bullets
Rear O2 sensors have been removed
Front O2 sensors have been replaced with Corvette sensor
I have not had a chance to have the computer retuned.
Question:
How much will NOT having the computer retuned effect my performance in the 1/4 mile?
I can't wait to get to the track!
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05-12-2006, 07:23 AM #2
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05-12-2006, 07:36 AM #3
What other mods do you have? Tuning gains will depend on all your mods. I have seen everything from only a 1/100th second gain to a whole 1.2 second gain but it depends on the car, the tuner, how much the tuner actually does get into, and of course any guidelines you may want the car to still meet.
98 T/A: HPE 5.3 Heads, 238/242 113 cam, Kooks 1 7/8 stepped LT headers, Custom Y pipe, Cut out, Borla, NW 90MM TB, FAST 90MM Intake, TB Bypass, Under Drive Power steering and Crank, 150 Dry NOS, Yella Terra rockers, 3400 TC, HPE tuning,
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05-12-2006, 07:43 AM #4
- Join Date
- Aug 2005
- Location
- Commerce Ga
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- 4,994
Black, Blue- 07 TBSS, 07 GSXR1000
Did you put o2 sims in or get the rear o2's deleted? If not it is going to hurt performance and gas mileage.
3 inch Chambered Catback.
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05-12-2006, 08:24 AM #5Originally Posted by BIG D's SS
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05-12-2006, 08:42 AM #6
- Join Date
- Aug 1999
- Location
- Arizona
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- 51,364
Black- 383 Procharged & N20 Vert
Actually when you are WOT, you are in open-loop and the computer doesn't use the O2 sensors.
I would get it tuned.Black 1999 Blown Convertible A4
Forged 383 | ATI D-1SC
NX MAF Kit | 222/226 .585 115
AS Stage II 6.0L FI Heads
Moser 9" | 3.70 | Wavetrac | 35 Spline | Vigilante 3600
548.0 RWHP - 563.8 RWTQ - 10# - D1
666.0 RWHP - 734.2 RWTQ - 125 Shot - P1
Black 2009 Escalade Hybrid 4WD
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05-19-2006, 05:23 PM #7
thanks for the replys guys. that is really a dumb question to ask cause it could be answered so many ways and there are so many different variables that will effect the car.
and as of now, no i dont have anything done with the rear o2's. they are just completely unplugged. to answer the other question, the only mods done are the headers and all the exhaust behind them. nothing else.[B]coated longtubes, offroad Y, SLP LM,, 18x10 rebels, pro kit, spec 3 clutch... B]
http://i72.photobucket.com/albums/i1...100_412033.jpg
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