Quote:
Originally Posted by deuncos
Anyone have a catted uel header and catless resonated/dual resonated front pipe set up? I know that people usually do this the other way around, i.e. catless header/catted frontpipe, but just curious. If being specific, the JDL UEL catted header and the HKS dual resonated front pipe. Trying to see which would be more effective in keeping the noise down, a catted/resonated combo like JDL's ultra quite and nameless downpipe, or a dual resonated front pipe such as HKS and fujitsubo. Planning on pairing it up with a perrin 2.5 inch resonated catback.
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Catted and dual resonated would be very effective, with a perrin resonated to back it all up, should be very tame and no rasp. Also important to note a common misconception is that cats quiet down the exhaust when in fact a resonator is much more effective, especially in the AT this is important to know if you want to prevent drone, as the AT FRS in drive tends to float around 1500-3000 rpm on very light acceleration throughout all gears which is a very drone rpm range for most exhaust systems.
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mav1178 has a good write-up of which front pipes were the quietest I believe.
If I had the choice I would do:
JDL Catted UEL
Nameless catted with helmholtz resonator downpipe
Perrin 2.5 inch resonated catback
You help with emissions quite a bit, and you get the advantage of cats and 2 resonators cutting out those harsh frequencies.