Re: Better turbo design
Now onto the exducers. The first pic is of all three exducers from the top. As you can see the one on the left is much lighter than the rest. It's the 86-87 exducer. The other two are the TTA and the 83 exducers. As you can see the 86-87 is the lightest of the three.
Now look at the housings. The smallest one is the 86-87 and the largest is the TTA. The one in between sized is the 83. You can see how much lighter the 86-87 is compared to the other two. This also changes the AR rating on both sides. This by itself is a great upgrade to the stock turbo if you just want a faster spooling turbo. Even using the 84-85 exducer is an upgrade for the stock turbo. The only drawback to this is you will have to make a down pipe and up pipe for the tubo.
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