Quote:
Originally Posted by AZTWW
These tuners have tuned on a variety of various BMW engines for many years. OTS tunes are developed within a fairly tight safety margin for what these engines have historically been able to handle. A 100hp bump for a BMW turbo engine is not uncommon and is expected. These things are well over engineered. I had tunes on my n54 engine for 4 years and had no issues outside of fuel system things that notoriously failed anyway.
You purchase BMWs own tune (if they made one for the 50i) and it basically would give you a 50hp more...these tuners put another 50 in there since BMW isnt going to allow you to get X5M levels at 30k cheaper. They have no incentive to do that but they know their engines are more than capable.
All conjecture of course but I think you are completely safe with a OTS tune. If you start heading north on the hunt for more HP, then your risk will continue to rise.
Hope that helps. So far, I have had no issues and I just went off warranty in June (knock on wood).
Oh and the tune is in its 4th revision so it's not beta.
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Thanks for the positive reviews, it really helps.
I see there are several flash tuning options on the market, bm3, ess, mission tuning, bpc..... The bm3 being the cheapest among them, any reason why? Which one is the most aggressive?
Increasing stock 11.5psi to 18-19psi, seems really pushing it....