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  1. Replies
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    Steveo, I dont have this up and running yet to...

    Steveo, I dont have this up and running yet to have looked at a Data stream, but what you were thinking is just what I was as well. I am going to install a pin and wire in that slot, and after I get...
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    Thanks for the info, I have both tunercat and...

    Thanks for the info, I have both tunercat and tunerpro on my laptop. What I really need is to figure out if there is a pin I can use on this PCM that is similar to the one you use to change the shift...
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    Thanks, That was a great link with lots of info,...

    Thanks, That was a great link with lots of info, I bookmarked it. But I am not sure if it provided me with an answer. The only possibility I found was that in one application B10 was labeled as...
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    need pinout help with 95 3.4 V6 ECM

    I am installing a 3.4 V6 out of a 95 Firebird into a Geo Tracker. I am converting the original transmission to 4WD duty. What I would like to do is install a switch I can use when in 4WD low, similar...
  5. Struggling with a tuning issue, need suggestions where to look.

    Been chasing this for a while, not sure what to work on, looking for suggestions. 2003 6.0 LS swap. 243 heads, small truck cam 208/217, automatic trans. When driving and rolling into the throttle...
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    Thank you Steveo, I dont think any of those apply...

    Thank you Steveo, I dont think any of those apply but I am going to find out. I will try to get some time this week to set up my wideband on this truck and see if the AFR is actually not what the o2...
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    I let HP tuners do the math. Lets assume your...

    I let HP tuners do the math. Lets assume your theory is correct, the math was done wrong, and a massive over correction has been done. If that happened I would think my trims would now be way off,...
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    See if this works

    See if this works
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    let me try attaching the two tune files. maybe...

    let me try attaching the two tune files. maybe something else is screwed up,
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    Thanks for the response. I am really not sure how...

    Thanks for the response. I am really not sure how to accomplish that Steveo. Be happy to try if you want to give me a tutor. I can tell you however that they are not much different. Other than...
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    Why is my MAF tuning not working right?

    I am hoping someone can enlighten me as to what the problem is with my current project and getting it tuned correctly.
    I have installed a 6.0 with 243 heads and a mild cam into a 91 K1500 pickup....
  12. So it sounds like the answer is...maybe. The...

    So it sounds like the answer is...maybe. The motor is 12.8 to 1 and I have been down the additive road and done extensive tuning on it. Currently have a snow performance methanol injection system on...
  13. Engine temperature, detonation, and timing

    I have posted before about my LT1 383 that I built when I had the ability to buy race fuel locally and no longer can. It really has too much compression now for optimum performance on available...
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    Tom, The quench area is the tight area between...

    Tom, The quench area is the tight area between the flat portion of the piston and the flat portion of the combustion chamber. Its purpose is to squeeze all of the mixture into the combustion area, so...
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    Tom, Thanks for the thought, but the car can be...

    Tom, Thanks for the thought, but the car can be driven just fine right now. It is just not operation at optimum, and it obviously wouldn't be with a "compromise tune" designed to allow it to just...
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    I have not investigated what it would take to...

    I have not investigated what it would take to change to an LS style ECM. I just thought of the whole E85 solution recently, up until now I have been considering changing to a head with a larger...
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    Steveo, Only running E85 would be my plan,...

    Steveo, Only running E85 would be my plan, however from everything I have researched the level of ethanol in E85 is not consistent, you can have 80% in one batch the gas station gets, and 65% in the...
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    Flex fuel sensor on 94 LT1 EE possible?

    I think my title probably explains my question pretty well. When I built my 94 LT1 based 383 I had easy access to race gas, and I built it with 12.5 to 1 compression. Now that access has dried up and...
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    What happens is when I stab the throttle hard as...

    What happens is when I stab the throttle hard as you suggested, it pulls a bunch of timing out, then it slowly adds it back in. My assumption was it was real knock, and it was happening because the...
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    LT1 Burst knock settings

    I have a burst knock issue on my 94 LT1 Stroker I would like to improve. When I built it, the compression came out higher than I wanted it to when I measured and assembled it and there wasn't an easy...
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    I can do that, but seeing as how where it is set...

    I can do that, but seeing as how where it is set at about 14:1 it is generating 18:1 A/F rations, I thought perhaps there was something else I should be looking at. Is it normal for it to be this...
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    Lean open loop when cold

    I have been working hard on re-tuning my 94 383 LT1 using EEhack and tunerpro and at this point am pretty happy with the results. I do have one issue I dont understand however. When I first start the...
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    Got it. Best explanation I have seen. Thanks

    Got it. Best explanation I have seen. Thanks
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    I guess this is the part I dont understand. If I...

    I guess this is the part I dont understand. If I adjust the Stoich to 14.4 and then I adjust the tables around that figure, does the motor not now run at 14.4 instead of 14.7 roughly 2% richer...
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    Adjusting Stoich on tune

    I originally tuned my car in at 14.7 A/F ratio. I want to adjust that to 14.4 to compensate for the 10% ethanol in my fuel now. If I change the Stoich to 14.4, can I simply adjust the entire VE and...
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