Quote:
Originally Posted by Himbla122
I'm trying to find a tune compatible with my f22 2021 M240i xdrive.
I was going to go with the Dinan stage 1 + to carry over my warranty unfortunately after doing some digging Dinan advised me that the 2021 M240i's have locked DME.
What options do I have with a locked DME? Are there any other tunes available or should I wait it out.
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Your current easiest and cheapest path is to pick up the JB4 tune. Brand new is 670 bucks for the tuning module plus the bluetooth connection kit which I recommend getting. Sometimes you can find a used kit for 400 to 500 bucks.
You could run the JB4 Maps 3 or 4 (I think 18, 20 psi of boost respectively) with a couple gallons of E85 in your tank. I ran Map 4 with up to 3 gallons of E prior to getting a flash tune and the car pulled super hard. If you want more power I would get the TU high pressure fuel pump then you could run additional ethanol and a higher map. Before I installed the TU pump I was seeing rail pressure drops even running an E20 blend. Folks say you can run up tp E30 on the stock fuel pump but I don't recommend it based on my experience.
I opted for the MHD flash tune since my DME is not locked but I did really like the JB4 setup. The real time monitoring interface is nice and the support from the JB4 guys is solid.