3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
Define small upgrades? I've always suggested the 19 lb injectors from the late 5.0 or early 4.6 ford V8 (the yellow ones). The m30 afm upgrade is a bit of a pain in the ass since you have to remove and swap over the m20 afm internals. A apex'i safc II has a flap style afm option for tuning the afm.
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