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No Rear 02's and knock codes wtf..

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Old 11-26-2010, 05:43 PM
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Default No Rear 02's and knock codes wtf..

long story short i got lt's deleted cats [no rear 02's] and it runs ok but not as good as it did when i 1st got the lt's 3 months or less.

The local tune guy tells me once you start changing stock you're in another world HELLO Performance Tune World.
I figure the 02's would be the easiest to fix at least in the fronts

MAN IT RAN HARD THAT 1ST WEEK OF PACE SETTER LT'S !
Old 11-26-2010, 05:58 PM
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There isn't any real question or statement of help here.



Is it getting KR? What codes are you getting? Did he tune your VE table to compensate for the added exhaust flow?
Old 11-26-2010, 06:01 PM
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Default Old knock code

THE KNOCK CODE IS A 'OLD' ONE NO TUNES HAVE BEEN DONE JUSTIN SAYS THE JERKING I HAVE BEEN GETTING ON TAKE OFF COULD BE FROM THE KNOCKS SENS OR DAMAGED 02'S OF WHICH THE REARS ARE GONE NOW SO IM IN PERFOMANCE SPACE.
Old 11-26-2010, 06:07 PM
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The rears have zero affect on the vehicles performance. all they do is make sure the cats are working. the FRONTS are the ones that could cause issues.
Are you referring to Justin from blackbear or is Justin your local tuner?

Your local tuner should be able to determine if your knock sensor is bad or if your o2's are bad just by logging.
Old 11-26-2010, 09:29 PM
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Maybe you have a cracked spark plug, burnt wire, bad tank of gas...etc. etc. Do you have access to a scan tool or tuning software so you can log the data and see what's going on?
Old 11-26-2010, 11:07 PM
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Default Justin from Black Bear

justin from Black bear Tune
Originally Posted by viciousknid
The rears have zero affect on the vehicles performance. all they do is make sure the cats are working. the FRONTS are the ones that could cause issues.
Are you referring to Justin from blackbear or is Justin your local tuner?

Your local tuner should be able to determine if your knock sensor is bad or if your o2's are bad just by logging.
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