Ive got a 2000 silverado.... Short tube headers comin off my block... With magaflow Y pipe. Pipes welded in place of the catalyst converter.. Wiring harness's for the cats just dangling... Can I get dummys? For them to plug into & fool my computer? Also throwning rear O2 sensor codes, saying voltage is too high.. How can I fix this? Heard about buying non fouling spark plugs, srewing them into my 02 sensor holes then somehow screwing my 02 sensor into the spark plug ? Ive also got a bullydog chip on the truck w/ upgrades running octane... Suggestions please?

 

Short tube headers aren't really doin anything for you power wise. Money would've been better spent on runnin longtube headers. And they used to make dummy sensors but they're hard to find now. To fool the computer you need to ditch the bullydog(which also is doin nothin for you) and get a custom tune and tell the tuner that you need the rear o2 sensors tuned out and adjusted for it. The fronts though need to be in the truck, the rears just make sure the cats are workin correctly while the fronts do all the work

 

Okay well I cant seem to find a dummy box to plug up my catalyac converters .... Ive looked, any help would he greatly appreciated... As far as the Downstream O2 sensor... Could I just use spacers? & Should I use straight spacers or spacers at a 90°- angle??

 

What website would have the dummy box?

 

As long as the front o2 sensors were the cats and screwed in there then you just need to get the rears tuned out