S54 Spec line
#26620 from Super Touring Committee · Rule change · TB 19-04 (2019-04 Fastrack)
In GCR section 9.1.4.1 Table B, BMW E46 S54 OEM, make changes to the spec line as
follows:
STU Maximum
Displacement (cc’s) Minimum Weight Notes
BMWE46 S54B32
OEM
3246 3300 Cannot use Super Touring engine allowances
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and must be OEM as delivered for sale in
the U.S., including stock intake plenum, and
camshafts. Engine cylinders may be over bored
1mm. Compression may increase .5. No porting
allowed.