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      07-26-2015, 01:16 PM   #13
artinz
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Canada
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Drives: m235i
Join Date: Oct 2014
Location: Canada

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Thanks for this post! it was actually very informative for someone like me who is starting to look at tuning. I do have a couple of questions though:

1. If I wanted to stick with no downpipe, are there any additional "worthwhile" upgrades I can make for power gains besides the Stage 1 tune, intake and (I guess) exhaust?

2. You don't recommend catted downpipe and I've read a lot of other posts with similar recommendations, however, I would like to keep my car catted, so are there any catted downpipes that have not caused any issues for the M235? I don't mind taking a bit of a hit on performance because of the a good catted downpipe.

3. Here in Canada, we have 91 and 93 octane readily available, so if I went with option "2", would I still be able to get higher boost without having to mix e85?
Appreciate 0