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    Well, I lost about 200 rpm on that timing table...

    Well, I lost about 200 rpm on that timing table over the straight up 30* table. Water temp may be an issue. I made a 32* table and had some KR with that. We have a big event coming up in Broken Bow...
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    That's a hell of a timing table. I'll try it out...

    That's a hell of a timing table. I'll try it out this week. Gonna lake test again at Lavon on Wednesday night. Hey Sam, you're one town over from me. I'm in Rowlett. I'll have this boat at the Harbor...
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    Here's the tune and the config file for the runs...

    Here's the tune and the config file for the runs above. Note the spark timing in tune 3 and the straight change in tune 4. Is my big cam throwing off the MAP, which in turn is not calculating the...
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    OK, Thanks to all that helped, but this was all...

    OK, Thanks to all that helped, but this was all for not. The trouble the entire time was fueling issues. The first Walbro inline pump just never worked at all. The second one worked for a week or so...
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    OK, I haven't posted here in a while. Turn out...

    OK, I haven't posted here in a while. Turn out the problem with this motor was a big lack of fuel pressure. The gas had a back flow check valve on it which needed a pretty good pull from a mechanical...
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    Found the problem. The fuel pressure is dropping...

    Found the problem. The fuel pressure is dropping to 30psi when I hit the gas pedal. I have to go through the 30+ year old fuel system and get it up to par. One option is to run a low pressure pump by...
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    Specifically, to create a MAF frequency...

    Specifically, to create a MAF frequency histogram, I set the plot value for Mass Air Flow Freq and leave the Row & Col Axis on Primary VE vs. RPM vs. MAP or change it to MAF Airflow vs. Output...
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    I'm pretty limited on space. How much distance...

    I'm pretty limited on space. How much distance should there be? If just a couple of inches will work I can figure something out.
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    Added MAF Hz to the config but when I open it up...

    Added MAF Hz to the config but when I open it up it says "unsupported parameter" in the table display.

    EDIT: Figured it out. That's pretty cool. It's added to the histogram, the chart display and...
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    Here's some pics of the intake with the filter...

    Here's some pics of the intake with the filter and MAF. Not sure how to look at what you are talking about with the fuel trim vs MAF hz.
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    Still runs like doo doo. After the initial start...

    Still runs like doo doo. After the initial start up condition stops operating it's going big time lean. The STFT's are pegged and showing numbers around 45 to 50%. The O2's are leaned out big time.
    ...
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    Ok, ran a scan. You're right Russ. When the MAP...

    Ok, ran a scan. You're right Russ. When the MAP kPa reaches 100 or more it goes totally lean and the STFT can't keep up enough. I'm gonna play with the VE table tonight and see how it does on the...
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    Looking through my DTC's, number P1635 is a 5...

    Looking through my DTC's, number P1635 is a 5 volt reference that is disabled. What does it go to on a 5.3? Found a thread on an 03 Trailblazer that had reduced power with P1635 going off. Found a...
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    Same thing. Runs for a minute then goes to crap....

    Same thing. Runs for a minute then goes to crap. Laptop went dead so I didn't get a scan. I'll go do that in the morning.
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    DANG! Loaded that file and the throttle response...

    DANG! Loaded that file and the throttle response is extremely crisp, idles sits smooth at 900. I won't get it on the water till after 4 probably. We got rain here today.
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    Better? Did the spark tables (I think), turned...

    Better? Did the spark tables (I think), turned off CAT overtemp, reset the stoich and am working on the VE table. Not sure which of the MAF tables isn't smooth.

    EDIT: Smoothed the MAF also.
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    I'm gonna load this tune into it tomorrow and see...

    I'm gonna load this tune into it tomorrow and see what happens. If from a non flex fuel cammed 5.3 GMC Sierra with DBW. About 30 different fuel tables are changed on this one. It was also wideband...
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    The MAF table was about .05 higher across the...

    The MAF table was about .05 higher across the board, but there were a lot of injector tables that were very different. I think I hit em all. We'll find out tomorrow.
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    Wow, got to look at a non flex fuel VE table....

    Wow, got to look at a non flex fuel VE table. Significantly different.
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    A buddy of mine told be to check the fuel...

    A buddy of mine told be to check the fuel composition is disabled. Anyone know where that is? Maybe in DTC's?
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    What's wild is this motor came out of a Z vin...

    What's wild is this motor came out of a Z vin Tahoe. Wonder what those injectors were doing on it. The Z vin is also what has the DBW, the T vin doesn't.

    There's a couple of good tunes in there to...
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    Bingo Russ!! The injectors are 25317628, non flex...

    Bingo Russ!! The injectors are 25317628, non flex fuel injectors. Someone here said I have a flex fuel tune. How do I get this corrected?

    I wonder how that happened? I personally went to the...
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    Can do... The motor was a complete pull. The only...

    Can do... The motor was a complete pull. The only things I didn't get with the motor was the pedal, the TAC and the MAF. Should the kPa on the MAP be as high as it is? It's sitting around 70-75 at...
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    OK, I'll try that. BUT, I have a 2000 GMC with...

    OK, I'll try that. BUT, I have a 2000 GMC with the 5.3. Just took the MAF off the boat and put it on the truck and it ran just fine. Did a scan, all looks well. The STFT will add a little fuel, the...
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    Here's a questions though. I'm searching and...

    Here's a questions though. I'm searching and can't find it. Why do I lose all DBW control when the MAF is disconnected? The pedal will be completely dead till it's reconnected and the key turned off...
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