lol. its such a niche market.
Just in general, the 1 series is small compared to the 3 series. Then add into that there are less 128i owners then 135i(on the forums).
Also, most of the time I see another 128i its normally a woman or elderly people. Of course, who says they can't be enthusiasts, but most of the time they are on the phone.
Its also hard to make parts for the NA engine. Aside from intake, exhaust, or tune, you are looking at major $$$$ for upgrades.
For cosmetic parts, it all applies to 128 and 135i, except the few unlucky us that don't have a diffuser or M sport bumper.
I normally go read the 328i section of bimmerpost as they have more discussions normally.
2009 128i Coupe Crimson Red
MODS: -Injen Intake-Magnaflow Exhaust-Carbon Fiber Spoiler - Carbon Fiber Grilles - OZ Ultraleggeras - CF Mirrors