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    It is dead here... well, anyway - could be plugs...

    It is dead here... well, anyway - could be plugs are too hot. Chasing that will post results. Right now I'm running NGK R5724-8's racing plugs. My compression may be too high to handle these... we'll...
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    I'm now dropping SA's and it doesn't seem to be...

    I'm now dropping SA's and it doesn't seem to be losing power. Going to continue to play with this. Still getting some knocks. Engine set at 8* BTDC and below is my latest SA table. To me (certified...
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    Forever Tune - "84 Modified Crossfire

    Hi, folks. Working my forever tune crossfire project... Here's my current set-up... 383 Stroker, Comp Ratio ~10.5:1, Speed Pro Cam - Valve Lift .454 Intake & Exhaust @ .05 - Lobe Sep 110° -...
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    Forever if you have no experience and modified...

    Forever if you have no experience and modified the engine. Take it from one who knows....:boogie Sorry for sarcasm. It is a pretty steep learning curve if you are not already familiar EFI tuning....
  5. Thread: Gas Smell

    by Cartrax
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    Thanks for the comprehensive reply. I found a...

    Thanks for the comprehensive reply. I found a leak in the rubber hose (evap line) near tank neck. Also found evap solenoid defective and decided to replace the canister just cause it looks original...
  6. Thread: Gas Smell

    by Cartrax
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    Gas Smell

    Trouble shooting gas odor - getting gas odor under heavy acceleration (more noticeable when tank above 1/2 full), will also get gas odor from rear as sun heats back of car area and slight odor...
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    Join Modified Crossfire Facebook Group

    Have a modified Crossfire? Share your experiences, show us your ride, learn, and/or help the folks asking the hard questions… Join our fledgling Facebook group “CFI Modified” Log into Facebook |...
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    New Facebook Group - CFI Modified

    Recently created FB page for CFI enthusiasts. Great place to show your CFI set-up and discuss common interests. Send in your request to - Log into Facebook | Facebook
  9. Vacuum Readings?

    Kane, sounds like your making good progress. Great! I on the other hand have had nothing but issues every inch of the way on my "84. Actually had to walk away from the tuning for a period of time it...
  10. "84's ??

    For those who steal the "84's (I own one) - you could be a little more discriminating. :D

    PS: I love my cantankerous "84. It is (or will be) somthin' special.
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    Crossfire Project - No Pain...

    Been working my "84 for about a year now, progress has come with pain - proving the old adage. Just finished a parallel plumb and added an external VAC referenced fuel pressure regulator. Tuning...
  12. Thanks for thr reply. Replaced the sensor and all...

    Thanks for thr reply. Replaced the sensor and all is well now - good reference for others. Advice - drain coolant first, yes I did but read about others who were very sorry they short cut it.
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    Yeah, know that now. Back then had me worried,...

    Yeah, know that now. Back then had me worried, what a sound it makes! Thanks for the reply.
  14. Hmm, not much of a knowledge base here on this...

    Hmm, not much of a knowledge base here on this subect.;shrug For the record the new reads 100K ohms - so I assume the old one was hosed.
  15. " 84 Vette Knock Sensor Reading = Inf Res -OK?

    Getting a reading of infinite resistance on my knock sensor ("84 Vette). My research is unclear on this. Anyone know for sure if this is an indication of a bad knock sensor?
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    Thanks, I actually sealed "em. Will see how long...

    Thanks, I actually sealed "em. Will see how long they last. Vac issue may be resolved.

    Buy often fron Rock Auto - usually the first place I go to check parts/prices.
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    Leaky IACs Causing Vacuum Issue?

    My "84 has a vacuum issue which I'm having a difficult time resolving. Today I tried the cigar smoke test and found both the IACs leaking from the back where the motor is housed. Do I need to replace...
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    Loud Knock with #2 Plug Out

    I inadvertentlty started my "84 with the number 2 piston spark plug out. I heard this very loud knocking. That normal? Ran for about 10 seconds and I shut it off. Plugs back in, ran it for a about a...
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    Update - Playing with some of the basics right...

    Update - Playing with some of the basics right now. (Whew - long post eh?)

    Timing finally tweaked after wasting a day looking for the EST connection (the "tan wire" actually has a black stripe on...
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    ECM back with fix and installed. Still a long way...

    ECM back with fix and installed. Still a long way from where I want to be but I'm getting closed loop, the O2S and ECM are dancing, and she's running more civil than ever. ...
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    Update - fault found in ECM. Fix in process.

    Update - fault found in ECM. Fix in process.
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    Well um, that was not the problem. So... I...

    Well um, that was not the problem.

    So... I checked the grounds -
    1. At the ECM connector pin 15, O2S Ground, for continuity to a ground point -it's there.
    2. O2S body to ground - yep
    3. O2S...
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    Think I just found something. Did sort of a bench...

    Think I just found something. Did sort of a bench test with O2S heater wired to the car but not attached to the pipe. I heated the sensor with the ignition off using a propane torch and got the swing...
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    Thanks for the input will follow through and...

    Thanks for the input will follow through and respond. May have one problem - not a bunch of hills here in Chicagoland will have to search for one.

    Output read from EBL WUD display program...
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    Heated O2 Sensor Diliema - Help

    Just installed a new heated O2 sensor. Issue is it pushes a flat 450 mv with the car ("84 Vette) running hot. No short in O2 ECM connection and I bench tested the O2 sensor it passed. Also bench...
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