So what's wrong with my tune??? Datalog file enclosed...

Boozshey

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So,
I can take stuff apart and put it back together but the more technical stuff I am still at a loss.

JDM will be looking into my datalog as well so I won't be looking to tell them what to fix. But anyone that is smart and can read my data log and tell me what they see would be great...

The car backfires, stubbles on itself, nearly stalls at stops and when I try and accelerate it just boggs down, chokes, then kicks in, then when I shift it does it all over..
 

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one eyed willy

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that sucks, it may be real tough to figure out with all the stuff you did at one time, kinda sounds like a vacuum leak or maf issue to me.
 

Boozshey

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If you click the link, then click FREE USER, then the next page wait a few second and a BLUE DOT will appear in the middle of the screen on the top that says DOWNLOAD. No registration required.
 

one eyed willy

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If you click the link, then click FREE USER, then the next page wait a few second and a BLUE DOT will appear in the middle of the screen on the top that says DOWNLOAD. No registration required.


figured it out, why does the rpm not show up?

and your intake air temp is 116-124??? its been like 50 degrees outside most of the day!
 
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bcb06gt

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I was able to view it. I slected "free user" and then download file. Automatically opened with MS Excel.

Interesting thing I think I saw was at one point the load (assuming this is in % based on 0-1) on your engine was maxes but no real speed increase at around 37 and then a sudden large drop in load (around 41 secs). Also, why is your rpm 0?

Just guessing at stuff as I only looked at these a couple of times.
 

one eyed willy

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i opened up a recent log of mine,my maf volts are between 0-4, yours are 150-500, not sure if its just translated differently or what?

the rpm thing concerns me alot,unless you just dont have the correct one picked ??

but the iat is way too high for our temps and the maf voltage looks crazy,is there a way those wires got mixed up? those wires are all in the same plug for the iat and the maf.
 

Boozshey

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Well I had to cut the gray and grey/red wire from the MAF to connect the IAT. Then run the two wires to the other side for the IAT sensor on the top of the shaker...
 

Boozshey

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But would my duty cycle stay low since I never really laid into it? I don't think I ever broke 4k rpm and the most I saw the boost was a split second at 5.
 

one eyed willy

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But would my duty cycle stay low since I never really laid into it? I don't think I ever broke 4k rpm and the most I saw the boost was a split second at 5.


oh,well i cant see your rpm,lol. that sounds about right,mine is around 20-25 till i get to 5k rpms.
 

Boozshey

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I will check out my datalog settings tomorrow and see why the RPM's aren't showing up... My tach does work though.. haha
 

Boozshey

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No, just the one that comes with it, it's taking its reading inside the S/C right on top..

It's in front of the TB to the left, you can see it in this pic...



wires29.jpg
 

BruceH

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That's after the supercharger and intercooler. Your supercharger blows air up. It also explains your iat temps.
 

Boozshey

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Good thinking, that's true.

Also the RPM mystery is solved. My dumb ass didn't have it selected. It was right below the 03-04 cobra setting so I must have unchecked it on accident. I will get another reading tomorrow afternoon with RPM, since that is pretty big indicator...
 

BruceH

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It looks like someone put a lightning iat2 sensor in at one point too. The gray sensor sticking out of the drivers side upper front.
 

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