Quote:
Originally Posted by Calum
What was the exhaust setup on the 4-2-1 header dyno posted in the first post if this thread?
Why is the overpipe required?
Can you post a pic of the primary merges?
I'm assuming these are stainless steel, what grade of steel are they?
|
Calum- More pics coming soon, we've busy making the welding jigs and getting production up and running.
Material is #304 brushed alloy. Info on website. We can also polish but found that the polished doesn't deal as well with heat at the brushed
Quote:
Originally Posted by OkieSnuffBox
My guess is they designed their header/overpipe with max primary length, so their combo will meet up with the stock frontpipe, but not the standard overpipe.
|
Correct, we should really call it the 4-into-2-into-1. OP is the wrong term
Quote:
Originally Posted by mad_sb
I think the car was strapped too tightly based on the wavy torque curve 
Shhhhhh
Love these headers, wish they were out (or I knew about them) before I got my first production run nameless header...... |
Thank you for even mentioning us in the same sentence
Quote:
Originally Posted by FirestormFRS
Neat idea. Wonder how long it will take a certain miami area shop to copy this one.
|
Not worried. Visually a regular BMW and Alpina look similar. Consider these headers blue-printed.
Some photos of the production jigs getting ready. Some welds will be done with the robot, but over 70% is still hand welded. Last photo is some test samples for the 4-1 header we were playing with.