Quote:
Originally Posted by F87source
Ok more thing in regards to the MILVS, I think the question was if tuning was required yes or no - not if there was any more tuning that could be done on top of the MILVS to get more gains.
Next I'm pretty sure the MILVS really maximizes the valve lift and duration but doesn't cause contact issues, it likely brings it closer than stock but to a safe limit.
IIRC the testing data I saw was from an s55 with the same tune before and after so likely no tune is required for the MILVS. I've also seen it on alot of engines without issue of valve contact.
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That is not correct, you need a tune to have any gains. The DME is actually using the current parameters on the for whatever tune model you have. You have to change it to gain anything, and you actually might lose power without the tune.
I’ve had them on my N/A car, and Bob at Stage FP (former BPC) made the original tune for them.