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So does the D66 automatically give you 40 psi of boost when you bolt it on? Or does it need special tuning (aside from a standard chip) and bigger injectors to make it work right?
Bolt on form the turb might hit 27lbs but it flows gobbs of air. I had to tweak and peak the tunning and fuel flow to achieve max pressure. And it flows some serious air at 40psi. I have yet to hit 40psi on flat land but when under load on a good grade it really slams that needle on the boost gauge. Its all smiles
No kidding, I am now researching how long a stock turbo will support 30+ psi. If I would just stop and fix those uppipes I would be making a lot more boost.
Its rightup your guys allies! The turbo is phenomenal. I hauled a load yesterday from Yakima to Ellensburg and the temps would get a little hot but never saw anything over 1000* loaded, no IC. I was really pleased. The turbo also cools alot quicker then the stocker unit did. I can hit 1200* and let off and be back in it starting from 600*. Like I said, at 40psi loaded its a screamer, at least thats what the guy told me at a gas station when i blew by him and his "chipped" cummins, while i was loaded mind you! lol, he wasn't all smiles but I sure was