14Nov/094
JHM longtube headers have shipped!
I received word from JHM that my longtube headers have shipped. The JHM longtube headers replace the OEM headers and downpipes; other cars have been seeing both 20-50 ft/lbs and 20-50 AWHP gains throughout the powerband. JHM reccomends wrapping the headers with an exhaust wrap, I choose another route.
Performance Coating in Auburn, WA will be coating the headers with their satin black ceramic coating; we expect to see a temperature drop of 110-120ºF.
Read more about the headers on JHM's site.
Stock B6/B7 headers:

JHM prototype headers:

034 Motorsport dyno of stock headers and JHM headers; note the vehicle dynoed was an auto. Click image for fullsize.
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marcabrown
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Brian C Mercer
