Originally posted by Dan Nixon: The resonator with its narrow down to under 2" is likely the biggest single bottleneck of the stock SVT catback..
No doubt... but that is not my point. My point is simply this: If I were to re-work a stock SVT exhaust I would do the following in order:
1.) Y pipe, no pre-cats
2.) High flow main cat or gut or replace with test pipe
3.) New cat back or remove resonator
I still find it difficult to understand how the removal of the stock resonator, on a otherwise unmodified exhaust can increase horespower. Unless the stock resonator is the single most restrictive part of the entire SVT exhaust system, i.e. MORE restrictive than the pre-cats, the y pipe intersection, the main cats and the mufflers.....
Are we in agreement then that the resonator is the single most restrictive thing on the entire exhaust system?
