converter without tune?
#1
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converter without tune?
Can I throw in a circle d 278mm 3k stall in and run it without a tune for awhile? Im just curious since its such a mild converter if I can get away with it.
#7
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The reduced weight of the aftermarket converters affect the idle and decel airflow because of the difference in what it was calibrated for originally. The weight difference also can make the pcm think it is misfiring (in relation to the idle issues). That can cause lockup-unlock issues, or a no lockup issue. With a looser converter you can usually squeeze some more timing out of it and the shift points really need to be modified. Reason is, the converter is looser, there will be some slip even in the upper rpms and you will be hitting that shift rpm sooner at a lower mph. So if your shifts are setup to have to meet rpm and mph requirements, it may cause an overrev if it sees the rpm requirement but has to rev say 200 rpm higher to hit the mph requirements.
With a 278mm, these side effects will be minimal BUT you could experience any of them.
With a 278mm, these side effects will be minimal BUT you could experience any of them.
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#8
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iTrader: (21)
The reduced weight of the aftermarket converters affect the idle and decel airflow because of the difference in what it was calibrated for originally. The weight difference also can make the pcm think it is misfiring (in relation to the idle issues). That can cause lockup-unlock issues, or a no lockup issue. With a looser converter you can usually squeeze some more timing out of it and the shift points really need to be modified. Reason is, the converter is looser, there will be some slip even in the upper rpms and you will be hitting that shift rpm sooner at a lower mph. So if your shifts are setup to have to meet rpm and mph requirements, it may cause an overrev if it sees the rpm requirement but has to rev say 200 rpm higher to hit the mph requirements.
With a 278mm, these side effects will be minimal BUT you could experience any of them.
With a 278mm, these side effects will be minimal BUT you could experience any of them.
Chris