Ceramic coated longtube headers
My JHM longtube headers have made it back from Performance Coatings! They've recieved a satin black ceramic coating to dramatically reduce radient heat.
We're looking at a 110-120 degree temperature reduction in the engine bay; this should be good for a 11-12% increase in engine efficiency. Gotta love free horsepower!
For a 450-500HP motor we can expect a gain of 50-55HP. Show me a better mod for the money!
Thanks to Performance Coatings and JHM!
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.
Re-pinning OEM Audi plugs
The taillights on the B7 have different plugs than the B6; the B7plug is a tad deeper than the B6 plug. The new B7 plug utilizes five of the six available pins, while the B6 uses all six. The extra pin on the B6 connector is for the rear fog light; I'm still trying to figure out how to make it work on the B7. You will save yourself a lot of trouble if you just pick up a de-pinning kit; I was using two flat head screwdrivers and cussing up a storm. After I found the tool kit, everything was a breeze. New pin layout for driver side connector. Keep in mind, your wires will be flipped on the passenger side connector (e.g. pin #1 should ...
Blacked out B7 ecodes
I don't like how stock B7 headlights look. Instead my buddy Rice helped me clear corner and black out the existing headlights. As an added touch, I was able to source a set of B6 ecode caps and fit them to the B7 headlights.