Cougar is pretty well up to speed with the diamond eye exhaust. We both have had our issues. Its a good system, but the 4x4's have a driveshaft clearence issue. They have updated the down pipe, but its still pretty close. For the money, it can't be beat. I got mine for under 300 delivered. I had over 600 in my Stans headers system on my 89.

 

what is the best exaust manifold to go with the diamond eye 4" system?

 

HTT or Industrial Injection

Luke B.
(828)399-1556

 

I am also in the market for a reasonably priced 4 inch down pipe. I need just the down pipe as I already have the full stacks but I am upgrading to an HX35.

 

My turbo is an HE4-whatever-ve on an ATS T4 footed manifold with an inch of spacers on it, so it sticks pretty far out over the frame rail. After I got a custom flange welded onto the end of the Diamond Eye, the downpipe fit perfect. I was surprised it was bent so well, no clearance issues at all. I could go at least an inch in any direction without hitting anything, somehow I have more clearance now than I did stock.