May 10, 2007brain fart...didn't see your later post about the code. I have the S&B CAI.
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May 10, 2007I'm not 100% sure, but I think it is the rear and will check for sure (have Tune inbound so will also call to see if they can turn off).
May 12, 2007Computer shows Bank 1, Sensor 1, Code P0135. Looks like it is related to the Heater Circuit. I was told there are high temp O2 sensors (Bosch) available. Haven't heard back from Tune folks yet.
May 15, 2007ok this is a shot in the dark , but here goes. my gf has a 98 pontiac sunfire gt. and her car did the same damn thing , code this code that. well finally i changed the O2 sensors and it still got the code. Come to find out it was the damn heater fuse was blown , which also controls the O2 codes comming on too. i changed the fuse to a good one and the code went away.
prolly has nothing to do with yours man , but worth a shot .
May 17, 2007Thanks, I'll check that out too. I called Dynatech and they confirmed that the low restrictive cats would make the comp think that the truck was getting too much air and would result in the codes and end up it with also running too rich. Tune folks said they could program it so we'll see when the tune gets here.
May 23, 2007Can you guys post the results of the install? Like if your gas mileage increased, decreased or stayed the same. Thanks!
August 3, 2007OK...my Dynatechs are giving me SES codes that a custom tune can't overcome. I have been through 5 PCM's and still have 4 codes. PO135 (recurring), PO141 (recurring), PO155, and PO161, not to mention incomplete monitors (Catalyst, EVAP, and O2 sensor). I basically am late on my inspection and can't get the truck inspected like as is. The only option is to use another header.
As told to me these headers are causing the O2's to fail. The position of the O2's don't allow them to heat up quick enough to report the correct readings.
I'll be calling Dynatech but don't expect much. Major suckage.
September 4, 2007I am considering the Dynatech's for my 04 Z71...I definitely don't want this O2 sensor problem though..... Let us know what you come up with....