ah ok nice well. For being a small area Mass/ RI I seem to hang out with at least 3 local forum members a week haha check out the regional new england forum there should be contact info on there. As far as cleaning up your smoke there are a couple things you could try but all in all that is a big turbo and it will take a lot of tuning to make it streetable. I'd try tightening your afc a bit and see if it still moves ok and cuts back on smoke.
are they new age 370's or old ones. If you dont know thats ok. I believe the only place to get new age ones are from Jkidd at Diesel auto power. If they are the old school ones that is fine it just takes a tad more tuning and you will always have slightly higher egts and more smoke.
its not my money I honestly would start else where, 12v's are all tuning, and no offense to the intake manifolds but there is no huge set of data or test results showing major gains. Yes there are slight improvements over stock but they dont tune your truck for you Im making my own just for looks.
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