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Diablo^_^sports Tuning

Old 03-15-2006, 03:32 AM
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Question Diablo^_^sports Tuning

i have mustang gt 2002 5speed and with diablosports tuning and now i put long headers and xpipe and k&n fillter i have to make the tune agin.
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Old 03-25-2006, 09:00 AM
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I wouldn't bother retuning it. Save your money for something else.
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Old 03-31-2006, 02:26 PM
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With the extra air flow you now have going in and out I would recommend a tune. Its not like you have to but it is always a good idea especially with the extra airflow.
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Old 03-31-2006, 02:32 PM
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Personally, I'd make a few pulls (dyno or street if you have a WB)
and check the A/F. I don't mess around when it comes to A/F.
Pay now or pay later IMO.
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Old 03-31-2006, 04:21 PM
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If it was tuned correctly, it should be self compensating.

To be safe, I would put it on a dyno. Some changes for the longtubes in "O2 sensor transport delay" might be needed.


Last edited by slow; 03-31-2006 at 04:32 PM.
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Old 03-31-2006, 08:32 PM
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O2's can only self compensate so much. After that you could be in trouble
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Old 04-01-2006, 03:42 PM
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O2's are only part of the adaptive fuel control while at idle and part throttle. The EEC doesn't even look at them for WOT.
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Old 04-13-2006, 07:51 PM
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I would get it looked at just to make sure because mod motors do not like to be lean and a re-tune is cheaper than a motor. You have a lot more air going in and out and it would be better safe.
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Old 04-14-2006, 10:21 AM
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Yes a tune is needed. For some reason that LT's on a mod motor makes the a/f go rich. Something to do with the primary O2's being further from the exhaust port. I went from FMS shorties to BBK LT's and my a/f went from 13:1 to 12.6ish -Mark
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Old 04-14-2006, 08:32 PM
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I was running lean after I installed the LT's and x pipe and retuned it and no lean issues anymore.
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