The Return of Tubby Z28

[SSlowBoat]

You tried swapping o2s for side to side already?

I dont live to work.I work to live

New o2's kinda defeats that purpose bro. We are beyond simple shit now. I am gonna mess with the individual cylinder trim multipliers tomorrow and pray I don't brick my pcm.


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[tleed]

Try opening up the throttle blades there is a screw on drivers side then readjust your TPS that work for me

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[SSlowBoat]

Try opening up the throttle blades there is a screw on drivers side then readjust your TPS that work for me

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we are beyond that. I know everything that you are to do with split blms at idle with tps, iac counts, etc. that's why I went as far as to change injectors. because we are past the simple stuff.

it's either the computer, or I have the luck of one other person I've read about who had hooker super comps that weren't fully welded in the collector merge and was getting straight air there.

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[tleed]

Dont Super comps have the removable tube for the number 1 cylinder I'm guessing you already checked for leaks and checked all the plugs and wires what kind of throttle body are you running

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[SSlowBoat]

Dont Super comps have the removable tube for the number 1 cylinder I'm guessing you already checked for leaks and checked all the plugs and wires what kind of throttle body are you running

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that's the wrong side of the motor, this is bank 2 lean, stock throttle body. iac at 45 counts hot, idle at 900 rpm, 227/235 cam on a 110lsa, which isn't big. new opti. stock coil. autolite copper cores gapped to .035. stock wires. new denso o2, no o2 extension. no vacuum leaks. no exhaust leaks at head. even changed bankn2 injectors.

the reason I think it is the computer is this car bone stock did exactly this on bank 2 and we chalked it up to bad o2. it was only ran stock by me for about 1 hour, then the entire motor was removed and swapped. everything is new.

I am gonna play with the injector offsets to see if it helps. the o2 is super lazy and pegged lean on startup, no matter which o2 I use on that side, when it goes into closed loop it's like it didn't have enough time to warm the o2 up, but the drivers side is already switching and reading correctly.

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[tleed]

Well definitely sounds like you got it narrowed down have you gone through the wiring for that O2 sensor

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[SSlowBoat]

Well definitely sounds like you got it narrowed down have you gone through the wiring for that O2 sensor

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yes, rerouted it away from heat, separated it from ground/knock/starter wiring, rewrapped it. all wires check out ok. it only does it idle cell 16, driving it switches properly

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[tleed]

Well I'm out of ideas for now keep us posted if you get it figured out I went through a lot to get mine figured out

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[SSlowBoat]

Well I'm out of ideas for now keep us posted if you get it figured out I went through a lot to get mine figured out

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and what did yours end up being?

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[tleed]

Combination of throttle body blade adjustment and tune I have a Holley 58mm and actually had to put a longer screw to push the blades out a little extra

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