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5.0L V8 Technical Discussions Any questions about the 'Coyote' engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!

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Old 07-06-2013, 06:37 AM   #11
Deranged2013
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OP. Did you ever get your issues sorted out? Guess you found out the hard way that you need a tune to run an off road pipe. There have been issues of bad pump gas going around also.
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Old 07-06-2013, 11:55 PM   #12
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OP. Did you ever get your issues sorted out? Guess you found out the hard way that you need a tune to run an off road pipe. There have been issues of bad pump gas going around also.
Why is it you must have a specific tune to run an O/R midpipe. I am not challenging your statement saying one DOESN'T need one. I am stating you won't see the appropriate gains. It shouldn't hurt to run without a tune but that Is how I feel and probably am wrong, just want the science to back it up please.

Don't mean to be disrepsectful if I was, really appreciate any insight you can give me!!!
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Old 07-06-2013, 11:56 PM   #13
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Oh and yes, OP any update?!
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Old 07-07-2013, 06:51 AM   #14
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Why is it you must have a specific tune to run an O/R midpipe. I am not challenging your statement saying one DOESN'T need one. I am stating you won't see the appropriate gains. It shouldn't hurt to run without a tune but that Is how I feel and probably am wrong, just want the science to back it up please.

Don't mean to be disrepsectful if I was, really appreciate any insight you can give me!!!
I'm sure you will see gains and the car will run, with a CEL on of course and ****ty surging idle. I would worry about running to rich and even more worried about running lean, which is the reason for the blown #8 issues. With a tune you can shut off the rear O2 sensors and stabilize the proper A/F ratios and fuel trims. Point is, If you are going to mod your car, make sure it is tuned properly for the mod installed.
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Old 07-07-2013, 06:58 AM   #15
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Why is it you must have a specific tune to run an O/R midpipe. I am not challenging your statement saying one DOESN'T need one. I am stating you won't see the appropriate gains. It shouldn't hurt to run without a tune but that Is how I feel and probably am wrong, just want the science to back it up please.

Don't mean to be disrepsectful if I was, really appreciate any insight you can give me!!!
Because 2011+ cars have a new feature called Cat Overtemp Protection that must be addressed with a tune or the car will continue to dump fuel to cool the cats which are no longer present.
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Old 07-10-2013, 09:45 AM   #16
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Ahhhhhh okay. It all makes sense! I appreciate all the feedback! Now just to see what is going on with OP.
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Old 07-10-2013, 09:45 AM
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