Custom Performance Single Step Headers for 01 to 06 BMW E46 M3. Custom Performance Single Step Headers for BMW E46 M3. Canon Canoscan N670u Scanner Wia Driver For Windows 7. Include Header Installation Kit?. 1-48 of 49 results for 'e46 headers'. Megan Racing MR-CDK-E46 Euro II Series Coilover. BMW E46 M3 01-06 / Z4M 06-08 S54 'Cat-less' Headers W/ Silver high.

Installing BMW Z4 M-Coupe (S54) JVT (eBay) Headers. Installation: The E46 M3. An 11mm closed end wrench was used for 3 nuts on installation of the new headers.

If you have been waiting for a reasonably priced, high quality stepped header for the BMW E46 M3, well your wait is over. The CPI Single Step Headers were designed to maximize midrange torque while maintaining strong peak horse power. Dyno testing resulted in +15 horse power at 7,500 RPM and +12 pound/feet of torque @ 4,300 RPM over stock (at the rear wheels). On our test M3, with a software tune from TTFS, power output was 327 HP and 270 LBFT of torque at the rear wheels. These headers are perfect for the street or track (SCCA and autocross).

KEY FEATURES of the CPI Single Step Headers • The CPI Single Step Headers are all 321 stainless steel (with satin finish instead of high polish) and all joints are TIG welded. • The single step design is unique in that the lead pipe is fitted into trailing pipe. Other stepped header designs swedge the end of the lead pipe and fit it over the trailing pipe.