Just because I have all these parts in my shed, I thought I'd post some stuff for people considering boosting a D series. I know there are a lot of tweakers here. The best way to get info about the types of parts you need, is to have information. A lot of this post is info about the turbo cars that you're borrowing parts from to make a DIY turbo setup, and it's intended to serve as a visual representation for why each one is good at what it does. I'm not getting into any DSM vs. Honda he-said-she-said BS. These engines are very different.

If you're trying to fab up a turbo manifold for your DIY or "junkyard" setup, and you want to use a mitsubishi turbocharger, here's a commonly used low-cost solution. Get a 92-95 CX or VX exhaust manifold. There are other models that have manifolds like this. I know. The runners are tiny, some year cars are prone to cracking under normal use, and they don't really flow worth a crap. Well, at least the runner sizes are equal to the tiny intake and exhaust ports on your D-series head. Cheap and easy fix. Ideally, exhaust should be channeled into the turbo's exhaust housing and directed towards the exhaust wheel. You're not going to get that with this manifold. But what you will get is an enormous bore for where the catalytic converter used to be, which creates a low-pressure zone good enough to spool a properly-selected turbo.






Here's a tip for the hardcore tweakers: When you find a hi-temp hardened steel bolt that fits where the o2 sensor used to be, tap it and drill it for your EGT probe. Good luck drilling through that SOB, though. It just makes for a really clean install because the factory heat shield has a hole for it. That, and you won't compromise the strength of the cast part by drilling into it. These things like to crack. If you are concerned about possible exhaust leaks, have the bolt welded into the manifold.