LTFT Releaning...is it this much a PITA
04-22-2005, 10:08 PM
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LTFT Releaning...is it this much a PITA Ok, read my brothers tune, seen a few things with it not so right, basically timing not set for nitrous. Only changed that and the MIN MAP from 65 to 75. Anyway, he has a problem since the cam install TSP 237/243 with P0106 Map DTC. We wrote the slightly modified tune, deleted the DTCs and the car started popping, and breaking up and really running like a ford. The LTFTs were pegged at 50, gradually B1 came down to 3 or so, and B2 down to 15. Kept popping for quite a few miles. A few miles later it kind of cleared up the LTFTs were settling in at 3.4, so I gradually hammer down, no popping etc pulled hard as hell. Let off and the car stumbled some and began popping, LTFTs were back at 50, then came down super slow. I figure the relearn process takes around 100mile/50+ min, as written everywhere, but damn is usually this bad? My brothers kind of pissed thinking I screwed his tune up, but thats ok, I can just toss him around later.
Charlie
Charlie
04-23-2005, 02:25 PM
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WS6- Normally I would agree, but to go from fine one minute, to popping and sounding like *** the next and the only thing you've done is change the tune and reset fuel trims, nope.
larr-Yes it pops on decel and on accell and much of the time inbetween.
You can watch the fuel trims get closer to zero and the car run smooth again when logging, and theres times when you can go WOT and no issue.....until you decel, or basically change fuel trim cells.\
larr-Yes it pops on decel and on accell and much of the time inbetween.
You can watch the fuel trims get closer to zero and the car run smooth again when logging, and theres times when you can go WOT and no issue.....until you decel, or basically change fuel trim cells.\
04-24-2005, 01:10 AM
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Originally Posted by CAT3
Well, for those reading, my buddy Dick ^, put his old LS1Edit tune back in and all is good again.
It was good for 10 minutes, no its ******* up again
Every time I turn off the car and restart it, it starts poping and backfiring
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04-24-2005, 11:56 AM
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Look at the other post. BMN posted a quirk about bit shifting. I need to look through the Edit tune you had in there, compared to what is in there now to see if the IFR table went south or what. Will call later.