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    I ran into some WEIRD timing issues just like...

    I ran into some WEIRD timing issues just like that when I converted my '77 Cherokee to TBI and it was the chip not being 100% set in correctly. Is your chip removable?
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    I haven't run into lean cruise in $OD yet. I've...

    I haven't run into lean cruise in $OD yet. I've also got BJYL.

    However, I'm wondering if you could make note of what blocks you're in during normal cruise. Then, add a little time and adjust...
  3. Yeah, Dave! Is that good for $OD?

    Yeah, Dave! Is that good for $OD?
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    Should it shoot up that much? I ask because the...

    Should it shoot up that much? I ask because the TBI diagnosis stuff I've seen read that anything over 10psi meant a faulty FPR. Of course, I don't exactly have a stock fuel system. My concern with...
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    Yeah, I was wondering that. I'll do some...

    Yeah, I was wondering that. I'll do some searching on signs of TBI FPRs failing.

    After running it for an hour to 90 minutes, the fuel pressure dropped from 25psi to 12psi. I found a bit of...
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    updating...

    I cleaned the pre-pump filter and fired the truck up. I'm now reading 25psi (!!), as opposed to the 13psi from before cleaning the filter. This seems to be way too high for TBI, right?
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    Yeah, I should be able to get a fuel gauge...

    Yeah, I should be able to get a fuel gauge mounted up and tape it to the windshield, or something like that. I'll get hot fuel pressure checked out and I'll also check pump resistance and for...
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    Lean condition when hot

    Hi there everyone. I've got a '77 Cherokee with a 360//th400/QT that I've converted a BJYL 16197427 $0D TBI into from a '94 Chev 1500 2wd. I've got a Masters E2000 fuel pump delivering 13psi, clean...
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    Thank you, Dave!

    Thank you, Dave!
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    Not meaning to hijack here... I've got a...

    Not meaning to hijack here...

    I've got a 16197427 $0D and am unable to locate where I would change BPW, if I needed to. I was also messing with the calculator and was curious if what I came up...
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    Thanks again guys! I made a minor...modification...

    Thanks again guys! I made a minor...modification to the AIR system and took the Jeep for a quick spin. Seems to be less fuel smell. I took a data log and the PCM has managed to already compensate...
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    Fantastic! Thanks for everyone's help! I'm...

    Fantastic! Thanks for everyone's help! I'm going to unplug the system this weekend and run a bunch of logs to re-set the fuel trims and try that.
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    Yeah, if it was controlled by the PCM then the...

    Yeah, if it was controlled by the PCM then the system would know when air was injected. But, since it's not, it's the factory Jeep system then the HO2 sensor has no idea that there's false air in...
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    Wow, guys, thanks! I guess I should have been A...

    Wow, guys, thanks! I guess I should have been A LOT more specific though. I forgot I don't have a signature here.

    I've got a '77 Cherokee 360/TH400/QT that I've converted over to TBI. No EGR...
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    Air pump introducing false air?

    So, I've always had some decent fuel smell from my truck since the TBI conversion. You know, that 'too rich' smell? I paid it no mind until I was washing the dishes a few weeks ago and had a...
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    If you find it is that cat, and need to replace...

    If you find it is that cat, and need to replace it, don't leave it in all the time. Have an exhaust shop build a test pipe for you, tell them it's to put in while drag racing or something. The test...
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    Great, thanks guys! Hey, Mark! Hope you're...

    Great, thanks guys! Hey, Mark! Hope you're doing well.

    What is 'airflow' exactly? I've found the table. For me it's 4CD7. The lower the 'airflow' number the larger the 'delay'. It's in...
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    Oxygen sensor latency?

    I've done some searching and haven't come up with anything concrete. I've got a 16197427 $0D junkyard setup that I'm putting the finishing tune touches on. I relocated my HO2 to where the 'Y' pipe...
  19. Someone smarter than me will reply to this, but...

    Someone smarter than me will reply to this, but try disconnecting the battery, performing a capacitive discharge (connect the positive and negative cables together ONCE THEY'RE OFF THE BATTERY), let...
  20. So, it's been snowing all day here so I can't do...

    So, it's been snowing all day here so I can't do any logging, but seat-of-the-pants it feels mostly better after switching the TPS% Delta to Activate Fast PE down to 10%. You'll get 3 or 4 pulls...
  21. Ok, I've done a ton of reading on AE and it still...

    Ok, I've done a ton of reading on AE and it still doesn't make a ton of sense. I've got what feels like a bog on tip-in for about 1 second and then it takes off pretty well. My NB O2 reads it going...
  22. Thanks, Dave. Sorry about the slow response. ...

    Thanks, Dave. Sorry about the slow response. Laptop needed a new hard drive so I was down for a bit!
  23. Jason's catch-all TunerPro/tuning thread

    So, I'm going to attempt to keep all my questions and whatnot to this one thread so if someone comes along later they can just cruise through...

    I've got a 1977 Jeep Cherokee WT 360/TH400/TQ I've...
  24. Thought I would go ahead and upload this to add...

    Thought I would go ahead and upload this to add it to the collective. This was found in a BJYL PCM out of a '94 Chevy C1500, 2WD. It's a $OD.
  25. Wow, Mark, you're right (duh!). I'm comparing my...

    Wow, Mark, you're right (duh!). I'm comparing my mildly modified stock tune (flags turned off and such) to the Hypertech and can't hardly find any difference. There's a touch difference in the VE...
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