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nothing but problems

This is a discussion on nothing but problems within the General Help forums, part of the LSx Technical Help Section category; Ok i hope someone can help me out with this. I have a 01 z28, with a 6spd. mods are ...

  1. #1
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    01 Z28

    Question nothing but problems

    Ok i hope someone can help me out with this. I have a 01 z28, with a 6spd. mods are a slp lid, k&n, diablosport, and edelbrock victor headers with offroad y and 3 1/2 exhaust all the way back. i also put a set of qtec cutouts right after the headers before the y pipe. i have a pair of autometer a/f gauges one for each bank, now the problem is the o2 sensors only seem to last all of 5 days. they work good for the first couple days then they jump around alot for a couple days then not work at all, then i get a multiple cylinder misfire trouble code and the engine runs like crap. I do not have the rear o2 sensors edited out of the computer, could that be the problem or something else??????? ANY advice would be great!

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    Junior Member Figz z28's Avatar
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    What cyl are misfiring? Second why did u put cut out's?

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    member since may 2000 nhraformula's Avatar
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    2000 nhra edition formula

    youre gonna need to delete out the rear 02s. a dyno tune would be a good thing to get done.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

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    Grand Imperial Wizard Sarge's Avatar
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    Retired Outlaw Sum Bitch

    ^^^absolutely^^^^^^

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    01 Z28

    thanks

    ok i'm getting it dyno tuned right away and will have the rear o2's deleted. hopefully that'll work. I put the cutouts in because it will be a street/strip car, and they are great fun. Also just kinda wondering if those patriot performance cylinder heads are as good as they say or is there a better alternative? Thanks again.

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    member since may 2000 nhraformula's Avatar
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    Quote Originally Posted by quartermile_91
    ok i'm getting it dyno tuned right away and will have the rear o2's deleted. hopefully that'll work. I put the cutouts in because it will be a street/strip car, and they are great fun. Also just kinda wondering if those patriot performance cylinder heads are as good as they say or is there a better alternative? Thanks again.
    way to many problems with patriot heads, keep away

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    Grand Imperial Wizard Sarge's Avatar
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    Retired Outlaw Sum Bitch

    I've had Patriots on my Goat now for over a year with no problems...I know they had some QC issues in the past.....I've had nothing but good from Patriot....

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    I imagine that because of the location of the cut outs, you are having issues with the O2's because the temp is changing so rapidly. Those things are sensative. When your running, they are around 8 to 900 degrees, then you shut down, cold air comes in through the cut out and basically super cools the sensors. anything that sensative that cools that fast is gonna break, I would assume. I would relocate the cut outs.

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