Has anyone ran dynatechs kit with the lt headers, high flow cats, and y pipe on a 5.3? id like to hook it up to my corsa catback but would like some feedback first. thanks

 

they will bolt right up if your corsa bolts to the factory y-pipe

 

I have that exact setup. I had to add a 3" extention between the y and the muffler because I had to pull the catback toward the truck. I just didn't like the fact that the corsa catback wasn't hanging straight up and down. I didn't have any issues running it either way. I will say that it is a tight fit for the dynatech y to go over the transmission brace. I think I have 1/16 to 1/8 clearance.

 

Did the Dynatech system result in some good performance increases?

 

first pic dynatech, had to notch my xmember to get them to fit, that was on an 07, fitment may have improved since.

2nd 2 pics, Arh headers, better shape and no fit issues.

 

Anyone running kooks headers? I'm thinking about them in the 1 7/8" config. For the 6.2. But I haven't seen any reviews on here about them?

 

Kooks still don't make a kit yet, if you are 2wd the camaro ones will fit with a custom y-pipe.
ARH has 1 7/8 [2nd pic above] with or with out cats

 

i noticed real good gains in the above 3500. easy install, but the fitment between the trans cross member and the y pipe, is a tight fit. it helped me to put wood chips in between the member and the y then tighten everything up. took the wood chips out and i have about a 1/4 inch of space in there now.

 

you sure? i was at sdpc a few weeks ago and had them listed in their catalog both in 1-3/4 and 1-7/8 sizes. retail was right there with dynatech but i have a hookup there and they were going to run like 900 iirc with the catted y-pipe(assuming that they were listing something that was actually available). what did the ARH's run you

 

you could be right, Kooks don't list them on their own website though.
ARH'S are more than $900, $900 would be a good reason to buy if they are
available.