i am getting a random/multiple cylinder misfire any ideas on what is casuing this? the car burbles when ran at 4000rpm range but anything above or below it is fine.

 

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You are experiencing the factory PO300 problem. Many cars go through it. Some cars get it when the XEDE is removed. Some cars get it when it in installed. The fix is plugging in the C-Reader which is a part of the SMART package. I prevents this fault from occuring on stock and modified cars alike. We just got a functional batch of C-Readers the other day. Some of the earlier C-Readers released by Launch (the manufacturer) didn't work.

 

thanks alot, i do have the SMART on the car as well, last time shiv tuned it was good for about a week and a half then the error code came back but no worries I will be up there next saturday to get it worked out.