E63 S
If you are cool with voiding your powertrain warranty, then by all means mail your ecu to renntech/weistec/ams. They can also do things like turn off your o2 sensor codes so you can put downpipes in.
I'm going in for some dyno time soon to measure the difference between rebellion and no rebellion, and also seeing how much I can turn the unit up before I start seeing knock with 94 octane gas. I'd like to see parity with a flash tune.
Last edited by herpderp; Apr 9, 2016 at 07:12 PM.

If you are cool with voiding your powertrain warranty, then by all means email your ecu to renntech/weistec/ams.
I'm going in for some dyno time soon to measure the difference between rebellion and no rebellion, and also seeing how much I can turn the unit up before I start seeing knock with 94 octane gas. I'd like to see parity with a flash tune.

The rebellion unit fools the ECU into seeing normal boost numbers, so as far as its concerned everything is normal. It hijacks the cam advance, boost, map, and fuel pressure signals, and provides the ECU with normal signals.
I dunno, these motors seem pretty robust, and are assembled by fine craftsmen. I think aside from possible issues with resale value, They hold together very well with a tune/piggyback/whatever you decide to do with it.
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Also would reverting back to a stock ECU and then reflashing to AMS or Renntech not require a re-tune as well?
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Do they offer TCM tune with that?

If you are cool with voiding your powertrain warranty, then by all means mail your ecu to renntech/weistec/ams. They can also do things like turn off your o2 sensor codes so you can put downpipes in.
I'm going in for some dyno time soon to measure the difference between rebellion and no rebellion, and also seeing how much I can turn the unit up before I start seeing knock with 94 octane gas. I'd like to see parity with a flash tune.
I have been extremely satisfied with the workmanship and performance. They are located in the Chicagoland area.
I had their tune/products on my e55 and c63 (when i was in nashville) and they were great to deal with
i went with renntech on my e63s becasue they are local to me now that i am back in south FL and i can head over to their shop anytime i add an mods and need them to re-tune






