headers

Hi Folks, I need to weld some 02 sensor bungs onto my Stahl headers. I'm thinking that cylinder #1 and #4 should do it. I only plan to run a single sensor but it will be nice to have the second during tuning. Would you be willing to check clearance against the inner fender and firewall and let...

I've posted a few times about the thermal reactors on my project 3.0Si. Decided to replace with these headers. If anyone needs a set they have them. http://www.proverbialmotorsports.com/#!featured-items/c12cc

Hi All; I purchased these a few weeks ago thinking they were 1 1/2" diameter primary tube diameter for my 3.5L high compression motor. They are 1 3/8" primary tube diameter which is better for a 2800 or 3.0CS engine, especially compared to the stock exhaust manifolds. I'm installing the...

My recently completed B34 piano piston motor upgrade coupled with motronic 1.3 and L-jet intake manifolding has gone well overall. With a Dinan chip installed (from a 1989 USA 635CSi) she should be putting out about 240 hp but I'm convinced the stock M30 exhaust system is really holding things...