Quote:
Originally Posted by JeffW
Hi all.
I'm thinking about picking up a 128. I drove both the 128 & 135, and they are both good fun. The 135 has amazing torque all over, but realistically, I don't need that much power in everyday driving. Also, I am little suspicious of long term reliability of this engine & turbos. The 128 was great fun to drive too, but I know I will want a little more out of it.
The N52 in the 128 is the same engine as in the Z4si. As far as I could tell, technical specs were identical, yet the 128 seems to be missing 25hp/20 lb-ft that are in the Z4. This missing power would make the 128 perfect in my opinion. Anyone know what makes up the extra power (cams, ECU programming?) and how easy to mod the 128 N52 to a Z4 N52 power level?
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Tom K. kind of alluded to the fact that the 2006 330i had the same 3.0 litre engine and put out 255hp. I wonder what is different between that engine and the 128i's that makes up the difference. It sounds like BMW had reached the upper limit of what they could push out of the same engine so in order to compete with Infiniti and they like they decided to turbocharge instead of manufacturing a separate, larger engine for the 335i. Or they knew down the line that the 135i would become a reality and needed to keep the engine small.