Originally Posted by Johnny D
For starters, the cost to make would buy you a 335i.
Stand alone ecu
Valvetronic delete set up
Throttle body set up
Throttle set up
i think he is talking about cutting up the stock single or 3 stage front section of the manifold and turn it into more of a ITB style manifold without
stock 3 stage already very effcient at feeding air into those individual runner, so i guess even if you cut it up, you will probably gain a little more top end compare to 3 stage, and no more mid and low end power.