Join Date: Sep 2007
Location: Durham, nc
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Cat needed for backpressure?
I talked with a diesel tech at my local Ford dealer, asking him about my F-250 blowing blue smoke while warming up after I put on an exhaust, and he told me that the variable vane turbo needs the backpressure of the cat. He said that the turbo compresses the vanes when cold to try to make up for the backpressure, and mentioned a couple of other things, but the main point was that I will eventually burn up my turbo, and gave me some examples of customers who burned up their turbos because of it. Has anyone here burned up their turbos by running no cat? It just seems that if it was a common problem, I'd hear more about it.
1997 F-250 4x4 7.3, ext. cab short bed, 5 speed manual
- Rudy's Performance turboback exhaust
- Hypertech tune
- 295/70R17 Nitto Terra Grappler G2s
- 17 x 9" Mickey Thompson Classic IIIs
1986 Mustang SVO