Originally Posted by gsxr

I don't have a complete part list available. It seems that we may not be able to convert to the full Euro setup without the Euro turbocharger or exhaust manifold (or both). The Euro crossover pipe doesn't seem to line up any better than the US, it's still too far away. It's supposed to look like the photos shown here.




Depends what year/model you're talking about - the 602.962, which this thread is discussing, does not have ARV on the turbo at all. But in both cases, I removed all the stock plumbing, and changed the vac source fitting as shown here, so there is no vac feed to any smog equipment.




No need to. The '87 300D already has the pressure wastegate. Just disable the EGR and ARV, and block or remove the plumbing.




On the '93 it will allow disabling the EGR, and it also prevents the computer from cutting boost unnecessarily. It won't do anything for turbo lag. You can tweak the ALDA and/or full load to try and improve power, but once you're at the factory spec of about 12 seconds 0-60 (as measured via stopwatch), it's not gonna get any better without stuffing a 6-cylinder under the hood. The 2.5 engine is nice for economy, and it's fine once the RPM's are up, but off idle (and off boost) it's sluggish. Can't fix that - simple lack of displacement.