What Are The Differences Between The N54 135i's And The 1M

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muz1990 Hey guys ( marco ) I'm just curious, what exactly are the mechanical differences engine wise between the two? Are certain components better/different on the M? Anyone know much about this #1 · Aug 20, 2012 Hey guys ( marco ) I'm just curious, what exactly are the mechanical differences engine wise between the two? Are certain components better/different on the M? Anyone know much about this Sort by Oldest first Oldest first Newest first Most reactions #2 · Aug 20, 2012 AFAIK the engines are identical, with the 1M just benefiting from some extra cooling parts and a software tweak.. #3 · Aug 20, 2012 The exhaust is different iirc, not aware of any other changes? #4 · Aug 20, 2012 Is the ecu the same? #5 · Aug 20, 2012 Should be, no profit in changing it? #6 · Aug 20, 2012 The fella that owns the 1M and the tuning company was contemplating downloading the same map to my 135i, I'm just curious if that would work or not lol He had it dyno'd afterwords at 400 bhp and 440 torques :worship: F*ck me eh? #7 · Aug 20, 2012 1M basically runs the same hardware cooling parts as the 135i PPK v.2 with the 850w fan & additional water rad. It also has specially written ///M software in the ECU to intergate the ///M button function, so will be different. Actual DME unit is the same I believe. 1M N54 also has a different ///M bespoke flywheel assembly, and of course the dual tailpipe exhaust. #8 · Aug 21, 2012 I'm pretty sure the 1M has different, better flowing downpipes. #9 · Aug 21, 2012

Mike Roberts said: I'm pretty sure the 1M has different, better flowing downpipes. Click to expand...

It certainley true they are different part no's to the 135i N54 ones. I think the shape of them might be the same, so, perhaps they are more free flowing cats....?? #10 · Feb 18, 2017

dino355 said: To resurrect an old thread, I've been told that the 1M has slightly different turbos too. The 1M does not suffer with waste gate rattles. I'd be interested in running 1M software on my 135i with an M button too as throttle response is lacking on a 135i when compared to a 1M Click to expand...

Not sure how you go about adding & integrating the M button function in a 135i........ :? #11 · Feb 18, 2017

dino355 said: To resurrect an old thread, I've been told that the 1M has slightly different turbos too. The 1M does not suffer with waste gate rattles. Click to expand...

The part numbers are the same on RealOEM for the N54 135i and the 1M.......... Be interesting to look up the part numbers on BMW's sytem to confirm. #12 · Feb 18, 2017 Apparently a different thottle body also? But Alot of simalities, but the bottom line is they can both achieve 400bhp easily #13 · Feb 18, 2017

dino355 said:

GeeRam said:

dino355 said: To resurrect an old thread, I've been told that the 1M has slightly different turbos too. The 1M does not suffer with waste gate rattles. I'd be interested in running 1M software on my 135i with an M button too as throttle response is lacking on a 135i when compared to a 1M Click to expand...

Not sure how you go about adding & integrating the M button function in a 135i........ :? Click to expand...

I'm guessing coding being the main part? Click to expand...

I think there maybe a lot more to it than that...... Insert Quotes Post Reply

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