92-93 L67 owners looking for more power
This probably has been discussed before, but I just had the micrometer out and checked the inlet of the GEN II M62 and found it to be 62.xx MM.
I then checked the outlet of the TB and found it to be 59.40 MM.
If you can find a shop to open the TB up 2.5MM you'd be seeing about a 5% (or more) flow capability from the TB, and more boost. Combine with a 2.2 or 2.3" SC pulley, non cracked and ceramic coated exhaust mani'* and you could really feel the extra power no doubt.