it has to be sourced from BMW E90

OEM can not be used

The GenV External Wastegate from Turbosmart was a ground-up rework of a classic and the only feature that rolled over from the Gen4 range was the mounting orientation

cost-effective external wastegate

Here is our recommended alignment parameters:Toe in/out: If Ackermann is 0 or negative then toe is 2mm out

Concaver CVR5 20x12 ET0-42 BLANK Custom Finish CB: 72,6 JRX6 it has to be sourcedPCD: 5x108, 5x110, 5x112, 5x114. 3, 5x115, 5x118, 5x120, 5x120. 6, 5x127, 5x130 ET: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42