how to delete cats without having code show?

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Jan 16, 2015 | 11:42 PM

mannyls1m6

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how to delete cats without having code show?

I just got my tsp stainless headers and y pipe. I ordered a pair of 02 sensor extensions. what do I do to no have any codes show up??

Jan 16, 2015 | 11:54 PM

scotty2000ss

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Black tape or a light bulb delete.

Jan 17, 2015 | 12:13 AM

99Bluz28

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You need to either get O2 sims or have the rear O2's tuned out.

Jan 17, 2015 | 01:37 AM

nuntheweiser

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I got my pcm tuned from the guy at lt1swap.com (for a ls swap) which included rear O2 delete for $75. Might be steep for only bypassing the O2's but I don't show codes and the guy gets it returned quick.

Jan 17, 2015 | 08:20 AM

01ssreda4

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From: Turnin' Wrenches Infractions: 005

Spark plug non-foulers. Reinstall rear o2 bungs in your exhaust, screw in non-foulers, then screw in rear 02s. They should not be able to tell you now have no cats. This keeps you from getting flagged as not ready if they read the PCM.

Jan 17, 2015 | 08:34 PM

scout2000

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Quote:

Originally Posted by nuntheweiser

I'm having the same guy at lt1swaps.com do the same for me, and several other thing on my Gen III swap into a MY1970 truck.

Jan 17, 2015 | 08:41 PM

01ssreda4

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From: Turnin' Wrenches Infractions: 005

No you don't throw a code but the system will show not ready if they do a computer scan. You may be allowed one not ready and still pass however. We don't have that bullshit here so check with your specific state.