Quote:
Originally Posted by jabwind51
When someone says "get turbos" at that altitude, don't be discouraged.
BMS (Burger Motor Sports) offers the PBX. It's a physical chip that can't be detected unless someone opens your ECU and takes a peek. Thus, taking it out for software type things would be recommended. Otherwise, it's dealer safe. Takes about 1.5 hours to install. There are many reviews of this one (all very positive) on this forum and mostly the e90 one.
The LET, I believe is just an ECU re-flash, which may offer slightly more power, but it can be over-ridden on dealer updates, etc. So, it's not long-lasting. Not sure on install, just computer work, I suppose.
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Not only that but the LET can be detected on dealer visits and could cause some warranty denial issues. Flashes may give more power but the trade off is that you could get stuck with the repair bill. The PBX is the one that is the safest bet and gives great gains for the money you spend.