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.

November 14th, 2009 - 22:02
Can't wait to see the results
November 15th, 2009 - 05:30
Good stuff!! Ditto on the results.
November 15th, 2009 - 06:02
Can't wait to see the results
November 15th, 2009 - 13:30
Good stuff!! Ditto on the results.