Unlike other headers on the market, the TMS Shorty headers?bolt directly to the stock BMW catalytic converter!?Stainless steel construction?retains heat much better than the mild steel often found in cheaper copies of the Turner header. This results in increased exhaust velocity. These headers are also TIG welded on the outside and use an 'under-over' construction into the merge collector so exhaust flow is not disrupted. If you want the best shorty header on the market, this is the one.
For OBD-2 cars an OBD-1 conversion or elimination of secondary air pump?is required to run these headers.
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