Nice article I had mine done when it was built. I suffer from very few boost creep issues. Not sure what if any performance gains were had but it definitely changes the sound. A lot of people think I have an external gate and screamer.....A very cheap and worth while modification in my opinion.
steve
the early evo boys have to do this all the time when they stick a bigger exhaust on sometimes just proting other times bigger penny aswell but external is sometimes still needed u can get upto 38mm internal penny on some evo turbos
I just ported mine last night on my 3071r-wg. Original diameter of the hole was 25mm, its now just under 30mm. Pics arent the best but you get the idea.
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