02-28-2010, 07:58 AM | #1 |
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Drives: 2010 Camaro 2SS/RS Black w/ IOM Join Date: Oct 2008
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Tuning with Diverters/Cutouts
I have been told that tuners with tune a car with diverters with them at 100% open in order to get the most power. However once tuned and you returned to fully closed position the car runs rich and idles rich until they are reopened. Is there anyway to fix this or is this an ok thing to do. I know these cars are rich from the factory but I am wondering how rich it will be at idle with diverters closed. I dont want to give my cylinders a bath everytime I am not using my diverters. Any input would be great.
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Livernois Motorsports: Maggie 2300 7psi, Livernois 2C cam/L99 to LS3 Conversion, Ported TB, Rotofab w/adm race scoop, adm trans cooler,Kooks headers no cats, Kooks 3" exhaust. METCO breather. Precision 2400 Vigilante TC. Eibach Lowering Springs & Swaybars. BMR Trailing arms, BMR Rear Cradle Bushings, BMR Toe Rods, BMR Differential bushings. Vossen CV3 20's w/ 305 Mickey Thompson @25psi. Zl1 front bumper. OE Zl1 Hood and matte black insert. 556RWHP/500RWTQ L99
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02-28-2010, 08:08 AM | #2 |
Drives: 2010 Camaro Join Date: Jul 2009
Location: Long Island
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Opening and closing the cutouts changes the VE of the engine. . . So to tune around this I would run the car in MAF only and disable the speed density and VE lookups.
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02-28-2010, 10:15 AM | #3 |
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so will that allow me for maximum power with the cutouts open and a more effecient afr at idle with them closed.
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Livernois Motorsports: Maggie 2300 7psi, Livernois 2C cam/L99 to LS3 Conversion, Ported TB, Rotofab w/adm race scoop, adm trans cooler,Kooks headers no cats, Kooks 3" exhaust. METCO breather. Precision 2400 Vigilante TC. Eibach Lowering Springs & Swaybars. BMR Trailing arms, BMR Rear Cradle Bushings, BMR Toe Rods, BMR Differential bushings. Vossen CV3 20's w/ 305 Mickey Thompson @25psi. Zl1 front bumper. OE Zl1 Hood and matte black insert. 556RWHP/500RWTQ L99
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02-28-2010, 11:04 AM | #4 |
Drives: 2010 Camaro Join Date: Jul 2009
Location: Long Island
Posts: 244
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At idle you are in closed loop and your afr will be maintained at stoich due to the fuel trims no matter which way you go.
At WOT when you are in open loop running MAF only will allow the computer to accurately estimate airflow and control fueling whether the cut outs are open or closed.
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Mods: TVS2300, 3.2 pulley, American Racing Headers, Custom Cam, Coil Overs, Tuned for E85, 610RWHP* 570RWTQ
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