Quote:
Originally Posted by Megahurtz
I like the idea of being able to restore my car to 100% factory. Cutting the factory exhaust is a crap shoot on how its done as well. I've seen some pretty hacked up jobs that some do not realize they reduced the flow beyond what the secondary cats did.
There is only one or two CORRECT ways to do the secondary cat delete on the factory exhaust. One way you have to get a 2.75 inch pipe, flare each end about 3/4" to slip over the factory exhaust. The pipe then needs to be an inch longer than the section that was cut out. Then you slip both ends of the pipe over the factory exhaust and weld it with at least a 1/2" in overlap. This will keep any slag out of the exhaust path from the MIG weld. And it will also keep from creating a ridge inside the flow path as well which could affect sound negatively. the second way would be to find a professional welder that would remove the exhaust from the car and TIG weld a 2.75" pipe in while keeping the specifications very precise.
So my OCD struggles with the idea of actually finding a shop that will do it exactly the way I want and cleanly vs just forking out the cash and knowing the Borla pipe is in there. I do not like anything half assed. I've been through many builds to know that if you try to cut corners you will end up paying for it in the long run.
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Pay now or pay later haha.
Yea they did an awful hack Job on a GTI I had.
Plus I'm sure the 2 3/4 pipes sound better anyway.