I agree 100% with this!!!with the stock turbo 3 inch is the biggest you can start at, some make a 3 inch to an expanded 4 but i really dont see the point unless you want more head aches trying to install it
I think the world of Dale Isley, and his stuff that he sells. He's a great guy! :thumbsup: But I bought one of the first 3"-3.5"-4" downpipes he had made, and always had one heckuva time getting everything to clear. It had clearance probs between the passenger side up pipe (to the turbo), between the floor board after the pinch weld, & more other places than I care to think about. And it wasn't my "First Rodeo" on a dp install. This one called for more "creative clearancing" than I've had to use on any other dp. I even loosened up the motor & tranny mounts, and levered the whole motor/tranny/transfer case forwards as much as I could (maybe 3/8"????). It made weird in-cab "resonance" from it's rubbing, and the floorboard was always warm on the passenger's side. Nice in the winter, but no fun this time of year.... :icon_rolleyes: Maybe the newer version is slightly better. I hope so.
I just know I was glad to go back to a "conventional" 3" round (Flowmaster) dp. There's a TON of room for that one in my truck, especially after all I did to try & get the other one to clear.... It's quieter, and I don't notice any diff in performance, but have no real accurate way to tell that for certain.....