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Old 12-16-2012, 06:05 PM   #2

Nutbutt's Avatar
Drives: 2011 RJT 2LT/RS Convertible
Join Date: Nov 2009
Location: Western Massachusetts
Posts: 3,382
You have no mods that require a tune. The LLT normally runs rich which doesn't hurt anything. No need for a tune unless you are looking for more HP or you are getting headers or high flow cats installed.
If you really want the tune I would suggest IPF tuning. I have their tune since I have a supercharger. The tune does seem to be leaner than the oem but I would say its not by much. IPF is the only tuning company I know that have access to the original Bosch files and the only company I know to date that have been tuning M6 LLTs to within oem type idles. The Bosch ECU is not the easiest to deal with. This was important considering the emission testing in most states.
1st IPF Supercharged 2011 2LT/RS RJT Convertible
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