whats the best resonator ?

[mhoffman1981]

i just put on the sho source catless y pipe and the car sounds good at idol but sounds like a banshee wide open. who makes the best resonator and what size will fit or sound the best.

 

[RonPorter]

Get the fattest and longest glasspack muffler that you can fit in there. Doesn't matter what brand. Some have even welded in a couple of them.

My '95 years ago had a large diameter glasspack for a resonator. The car sounded good even with cheapie glasspacks as mufflers. I even called the muffler shop that the previous owner used to have it installed, and they couldn't tell me what the part was. An Internet search didn't help, either, but it was some sort of no-name jobber glasspack.

 

[mhoffman1981]

should i just replace the stock resonator with the glass pack or add it inline with it? how long will a glass pack last?

 

[RonPorter]

should i just replace the stock resonator with the glass pack or add it inline with it? how long will a glass pack last?

Get rid of the stock resonator. Glasspacks are cheap. Labor may cost more than the resonator. Whole deal should cost under $100, probably more like $50. Life depends on how much driving, but, even under the worst conditions, 2-3 years should be the minimum life.

 

[jedhead]

I added two Magnaflow's bullet style mufflers to quell the rasp. I chose Magnaflow because many of the cheap glass pack had perferations in the path of the exhaust flow, Magnflows did not. I wanted to have the least restriction in the exhaust.

Bob

 

[mhoffman1981]

that works for me. thank you for help!

 

[walser]

has anyone ran a no catted and no resonator and just have 2 glasspacks for the mufflers? my buddy has a 3.0v6 twin turbo stealth with no cats and just 2 glass packs and it sounds amazing. im sure having the turbos changes the sound but i wonder how much? and the good thing about that is it would be very cheap!

 

[92sho16]

Just beware that glasspacks burn out material fairly quickly. Buy a magnaflow round muffler so you dont have to replace it again down the road.

 

[PROPHET]

Magnaflow all the way.

 

[somedude_001]

all my turbo car has is a magna flow 3" straight through. it is extremely deep and super loud. I don't like it. I will try adding a resinator inline to see if that brings the DB down a bunch.

 

[whiteman_01]

My exhaust guy used 4.5x24" cherry bomb glass pack with my dynomax kit. It really made a difference. Also, he installed the glass pack backwards to get smoother flow, and make the glass pack last longer. At least, thats the reasoning he gave me.

 

[mhoffman1981]

Get the fattest and longest glasspack muffler that you can fit in there. Doesn't matter what brand. Some have even welded in a couple of them.

My '95 years ago had a large diameter glasspack for a resonator. The car sounded good even with cheapie glasspacks as mufflers. I even called the muffler shop that the previous owner used to have it installed, and they couldn't tell me what the part was. An Internet search didn't help, either, but it was some sort of no-name jobber glasspack.

so you ran 3 glass packs total? i had the resonator replaced with one like you said and that go rid of half of the rasp but if i were to replace the mufflers with two more that should get rid of all of it right? how loud was your car with just glass packs?

 

[zak]

Borla XR1 Bullet 2.5". Most of the low cost resonators perforate the pipe from the OD inwards, creating little pieces of metal sticking up with greatly reduce the flow capacity (not by a little, either - think of your 2.5 inch resonator flowing the equivalent of a 2 1/4 or even 2 inch straight pipe). There are some exceptions to this, Dynomax makes a good one also but I forget the model name.

 

[RonPorter]

so you ran 3 glass packs total? i had the resonator replaced with one like you said and that go rid of half of the rasp but if i were to replace the mufflers with two more that should get rid of all of it right? how loud was your car with just glass packs?

The PO Had some $10 glasspacks and new tips installed with the stock resonator. Said he couldn't stand the noise, so he took it back in. They replaced the stock resonator with the big, fat no-name one. The car then sounded very good, even with the glasspacks out back. It had ZERO rasp.

Glasspacks are just mufflers, but they are a straight-through design, just like a resonator. IIRC the factory resonator on my '99 wasn't a see-through, though. FWIW, I took it out, sound didn't change, but it seemed that I lost some torque, so a week later I had it put back in.

 

[RonPorter]

Borla XR1 Bullet 2.5". Most of the low cost resonators perforate the pipe from the OD inwards, creating little pieces of metal sticking up with greatly reduce the flow capacity (not by a little, either - think of your 2.5 inch resonator flowing the equivalent of a 2 1/4 or even 2 inch straight pipe). There are some exceptions to this, Dynomax makes a good one also but I forget the model name.

I don't know about "greatly" reducing the flow capacity, but I see those pretrusions as having the function of disrupting the flow to let the silencing effect to work.

Dyno test on catback setiups have shown minimal power gains, anyway. Using a mandrel-bend system probably has the greatest gain by eliminating the necked-down bends in the stock setup.

 

[zak]

Dyno test on catback setiups have shown minimal power gains, anyway. .

Because 90% of the SHO commercial cat back systems skimped on the resonator choice . . . . do not take my word for it, go and google scfm and resonator and see the data for yourself. And agreed, we are not talking +30 hp here . . . .

 

[walser]

so if i were to put one large glass pack as a resonator and 2 smaller ones behind the rear wheel it would sound good and not be to loud? and i do not have any cats.

 

[RonPorter]

so if i were to put one large glass pack as a resonator and 2 smaller ones behind the rear wheel it would sound good and not be to loud? and i do not have any cats.

With a big-enough resonator, you can put on whatever you want for mufflers. That's the point I was making with my good sound even with cheap mufflers out back. Pick mufflers for the sound you want (or don't want, whatever the case may be).

Can't speak to the sound with no cats, though.

 

[mhoffman1981]

With a big-enough resonator, you can put on whatever you want for mufflers. That's the point I was making with my good sound even with cheap mufflers out back. Pick mufflers for the sound you want (or don't want, whatever the case may be).

Can't speak to the sound with no cats, though.

i think im going to have to put the cats back on my y pipe because right now my car sounds like it has a kazoo stuffed up its a$$.

 

[RonPorter]

i think im going to have to put the cats back on my y pipe because right now my car sounds like it has a kazoo stuffed up its a$$.

I've heard that the catless cars sound like crap, but I was never interested enough to follow any of those threads. Unless you are running a blower, you are better off running cats, anyway.