If your catback exhaust Is too loud and harsh because there's no resonator in the b-pipe, or its too small, we've just released the Cattman Performance solution:

NEW CATTMAN PERFORMANCE RESONATOR



Stillen and some other catbacks have no resonator in the b-pipe, and in other brands they're too small. These catbacks are louder than most customers prefer, but when a y-pipe or headers are added, the volume and harsh tone really get out of hand.

This is our new Cattman resonator, and its the best that money can buy for the Maxima's b-pipe. It will very significantly reduce the volume from a catback without a resonator, or with one that's too small.

This is the "ultimate resonator", recently developed for use in all of the Cattman Performance catback line. It isn't a part off the shelf, we set the specs and this is the custom-built result, only available from Cattman Performance.

The part's way over standard length and diameter, 22" x 4" with 2.5" tubing throughout. Its made from the most durable and effective materials available, 16 gauge T304 stainless steel, w/ stainless steel wool sound deadening material (no fibreglass) and a micro-perf inner tube (no louvers means no loss of power).

Obviously this isn't a bolt-in part, but installation is just a matter of finding a competant exhaust shop that can weld the resonator into a 2.25"-2.5" b-pipe while maintaining the b-pipe's original alignment.

The price is just $99/each, and we can ship them anywhere in the US for $15 or less. We take orders by phone, 520.575.6195 (800.759.9920 if you don't have free LD), 10-5 MST, M-F. All major CCs accepted, PayPal, money orders.

Brian C Catts
Cattman Performance

 

is this the same resonator included in your current exhausts or different?

 

Oooh nice and shiny Great deal on these Brian!

 

We started using these specific resonators in our exhaust production last month. They're not substantially different from the ones we've used before, but now every spec is exactly what I like, and we have them in enough quantity and at a good enough price to sell seperately.

Brian C Catts
Cattman Performance

 

Hi Brian,
What about full 3" exhaust systems?
Are you planning a 3" version?

 

any sound clips ? before and after type of thing ?


I'm looking to get headers in the future, and wondering how this would affect its volume. Since people remove their aftermarket mufflers and slap on stock ones because it just gets too loud with headers.

 

Yeah. A 3 inch resonator would be nice.

 

Brian do you have a sound clip to compare the sound with the old version to the one with the new pipe?

 

As a practical matter, we buy the 2.5" resonator I'm promoting in lots of 100 and it would take forever to sell that many in a 3" size, so I won't be able to have 3" version made to our custom specifications.

That said, I have ONE 3" s/s resonator that's 16" long (resonator body's that long) + tubing extensions, which I'd be glad to sell to the first caller for $99. It should make a big difference in any 3" b-pipe that doesn't have a resonator now.

Brian



Brian

 

First, I'll mention that we don't do sound clips. I know that everyone does it, but I look at it this way. I've never heard a sound clip that sounds anything like the car it was recorded from. The original recording cannot capture any of the lower frequencies. There's no way to benchmark the recording or playback volume, which is a pretty critical factor - if the sound card on your computer's turned up too loud, you'll think the exhaust is too loud, and vice versa.

Its not really an old version/new version thing. Cattman catbacks are probably slightly quieter with this resonator because its a little bit longer, but it wouldn't be a significant difference; it shouldn't matter in a buying decision (if buying a Cattman catback), and you sure wouldn't want to replace one of our older resonators with a new one. Though it might be a little quieter, it certainly wouldn't be worth the effort or expense.

The new Cattman resonators are primarily intended as a solution for catbacks that are REALLY loud because they either have no resonator at all (Stillen, Courtesy and some other brands + many custom exhausts), or one that is too small (some Greddy systems, etc.). They're also great for building into a custom exhaust in the first place. They're over 50% longer than a typical 14" catback resonator, and inch-for-inch they'll do a better job with the superior construction and materials we've used.

I think that everyone knows the bottom line is that you cannot make a performance exhaust that maximizes hp/tq AND is whisper quiet. It can be quieted down to a point with the resonator and muffler, and the sound can be "shaped" so that it has a mellow tone and nice pitch - these objectives guide our exhaust design - but to go farther means going with something other than a straight-through design (like Frankencar's baffled muffler design), and that ='s significantly more backpressure and less power.

Brian

 

Hey Brian, will a new b-pipe with this resonator be your web price? or does the org get a discount?

 

We've been using this resonator in all of our new production for a couple of months, and these parts sell at the regular prices (which will go up soon). We offer a maxima.org discount on almost all of the parts we sell.

Brian

 

curious... how would this compare to the stock resonators on our cars? any idea? (sound/airflow/power?)

 

Unlike mufflers, it would be unusual for any resonator not to be a "straight-through" design, so the difference in flow/performance comes down to the diameter of the tubing and the relative smoothness of the tubing walls* and differences in volume/tone come down to the length/diameter of the body, the sound deadening material used inside, and the perforations in the inner tube.

The stock resonator probably cancels sound more completely than ours (stock rez is larger, the CP rez uses better sound deadening material), but due to the small inner tubing diameter, its not very compatable with a performance exhaust system. OTOH, due to its unique specification set, its probably safe to say that the CP rez will cancel sound more effectively than any other 2.5" aftermarket rez.

Brian C Catts
Cattman Performance

*I'll note that in some resonators, the perforations (holes) in the inner tube are each bent up into little louvers that intrude into the exhaust stream. This might increase the sound-deadening capabilities (I've got no idea), and I've seen it promoted as a performance feature (in that example, they're patterned in spirals, supposedly to "whirl" the exhaust gasses), but its a feature that should be avoided because it actually hurts performance by causing the exhaust flow along the tubing walls to travel more slowly then the gasses in the middle = massive turbalence and loss of exhaust velocity, both enemies of performance.