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So I am close to purchasing a 09' 135i, just trying to neg a price and find a suitable time for an inspection once the price is set.
I stumbled across another 135i though, 11' I take as n55. i need to go see it, but just wanted to know.. is there really a tuning difference between the n54 vs the n55 ?? I only plan to probably go as far as fmic,downpipes and mhd tune or the likes, no meth or e85.es mhd support n55s too? or is there any flash available. obviously i would prefer a newer car if/or the price fits as well but just want to know if theres much difference compared 54/55.
all else remains same. 6sp manual etc.. im not really sure what else is different between these cars besides the motor and if there is anything else i should consider as I have up until now only been looking at 08s/09s as they were the only ones in my price range.
Thanks in advance
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