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Old 07-06-2010, 02:13 PM   #1
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DTC Codes?

Right after I installed my new JLT CIA and SCTX3 Tuner, I got a check engine light on my 08 GT. It said I was running too rich. So I did a reset and everything seemed fine-now after my 4:10 gear install, it came on again only this time it was for too lean? I reset it again, but is there something else I should be checking?
On a side note with the new 4:10s there seems to be a "clunk” between first and second and a rattle (not sure if that’s the right word) when I go over some rough road coming from the rear. Just not as tight, and quite as it used to be? I will crawl under and re-check all attachments, but just wondered if anyone else had experienced either of these problems their selves?
Thanks to all for your input.

P.S. The 4:10s are GREAT no whine.
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Old 07-06-2010, 03:42 PM   #2
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Re: DTC Codes?

check hoses on CAI make sure your not getting un metered air in the system you can reload the stock tune then reload the new tune again to rule out the tune~ but It usually an all or nothing tune load... so I am doubting its a bad tune load but the tune itself might have an issue~ (i doubt that as well but they will probably email you a new tune if you cant find it mechanically via something wrong with the install) cant hurt to try the tune again from them if all else fails.
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Old 07-07-2010, 09:43 AM   #3
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Re: DTC Codes?

Thanks I orderd a new tune but was wondering that in the meantime if I could raise the richness one notch with the tuner?
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