09-21-2007, 11:18 PM
It can't be coilpack as the DUratec is Coil-on-Plug ignition. Unless one of the CoP modules is loose, that's out. It's too early for spark plugs in my books, although bad gas from the beginning on might cause it. It's quite doubtful, tho.
My suggestion? Haul the negative cable off the battery for 15 minutes or so to put the ECU back into "learn mode" for air metering, then go for a drive for 30-40 minutes using all different types of driving styles.
Sometimes the stock tune gets a little "stupid".
Other than that, take it to a dealer you can trust. It's all warranty anyhow, so you shouldn't pay for anything for a driveability concern.
My suggestion? Haul the negative cable off the battery for 15 minutes or so to put the ECU back into "learn mode" for air metering, then go for a drive for 30-40 minutes using all different types of driving styles.
Sometimes the stock tune gets a little "stupid".
Other than that, take it to a dealer you can trust. It's all warranty anyhow, so you shouldn't pay for anything for a driveability concern.
Daily driver 1: 2007 Jeep Wrangler Unlimited Sport "S"
33" BFG Mud-Terrain KM2s, lots of Rough Country gear - bumper, 2.5" lift, swaybar disconnects, Superwinch 10,000lb winch, Detroit Locker in rear D44 axle, custom exhaust, K+N filtercharger, Superchips-tuned.
Daily driver 2: 2006 Subaru Legacy GT
COBB Stage 1+ package - AccessPort tuner, COBB intake and airbox. Stage 2 coming shortly - COBB 3" AT stainless DP and race cat, custom 3" Magnaflow-based exhaust and Stage 2 COBB tune.
33" BFG Mud-Terrain KM2s, lots of Rough Country gear - bumper, 2.5" lift, swaybar disconnects, Superwinch 10,000lb winch, Detroit Locker in rear D44 axle, custom exhaust, K+N filtercharger, Superchips-tuned.
Daily driver 2: 2006 Subaru Legacy GT
COBB Stage 1+ package - AccessPort tuner, COBB intake and airbox. Stage 2 coming shortly - COBB 3" AT stainless DP and race cat, custom 3" Magnaflow-based exhaust and Stage 2 COBB tune.