**Twin Turbo 67 Dart Project**

Another thought while I am posting is the exhaust. Now I have been told and have always run a exhaust pipe diameter that is [U said

1.5 times the outlet size of the turbo. [/U]Some say its necessary and it can limit boost and make the turbo work harder if you run too restrictive of an exhaust. I have never run small exhaust so I cant endorse that comment, but I thought I would mention it in case you have trouble with late spool times and possibly not making your target boost number.

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Chris can you explain what you mean. Are you talking about the Inlet size off the header from the Head? Or the actual Exhaust out of the turbo. Mine is 3.25" exhaust out of the turbo. I am running a 3.5" Exhaust all the way out on both turbo's. If I am understanding this correctly than than by those calculations I would need Dual 5.25" Exhaust and there is absolutely no way those would fit where I am running it out now.............Dang that is HUGE!!

From the bottom of the car I could step it up to 5" if need be!