After market chips
Thank for any input.
The same era 3-series (my daily driver) are very similar to the M104 except those were a slant6 and the VANOS (especially after chipping) made a very rev-happy engine that likes to live above 3.5K. Vers a long stroking Mercedes engine, or at least thats the impression I seem to be getting. Of course this doesn't apply to your Cossie, which is pretty much like any modern or otherwise M3.
So anyways, the chip for my e36 was very noticeable. 15 horse is an underestimation. The reputable tuner claims 22HP and on a 189HP stock motor, it is very noticeable.



