[rustyminded]

Originally Posted by MCD

No gains, resonator is just a perforated tube from the inside to break sound waves. It doesn't limit the air flow, so no power gains.

what about drone, I already have catless dp & when i got the AA axle- back found it's catless too so after installing experienced drone for quit a while, it decreased by time but now i want to do resonator delete so will there be any drone again or even worse this time ?

[f30luxline]

Originally Posted by rustyminded

what about drone, I already have catless dp & when i got the AA axle- back found it's catless too so after installing experienced drone for quit a while, it decreased by time but now i want to do resonator delete so will there be any drone again or even worse this time ?

There is only a single cat and this is in the downpipe. Resonators are designed to reduce the amount of resonance. Resonance is caused when sound waves hit certain frequencies. Removing the resonator will most likely cause the sound to resonate (cause drone)

I thought people have claimed that the AA exhaust doesn't cause drone?

[rustyminded]

Originally Posted by f30luxline

There is only a single cat and this is in the downpipe. Resonators are designed to reduce the amount of resonance. Resonance is caused when sound waves hit certain frequencies. Removing the resonator will most likely cause the sound to resonate (cause drone)

I thought people have claimed that the AA exhaust doesn't cause drone?

The AA doesn't drone, it's the combination that makes the drone but it's only at first, i have a friend on this forum has same setup will say the exact same, drone at first of install

[MCD]

With my setup (catless dp, no resonator and stock muffler with no fiberglass inside) I have ZERO drone. The sound is amazing, and burble at every downshift, and burp at every upshift like a shotgun!

[f30luxline]

Originally Posted by MCD

With my setup (catless dp, no resonator and stock muffler with no fiberglass inside) I have ZERO drone. The sound is amazing, and burble at every downshift, and burp at every upshift like a shotgun!

Do you have any sounds clips? Any info on removing the fiberglass?

[MCD]

I have some sound files, but I only know how to send by email... If you want, pm me eith your email.
But if you want to know how it sounds its like the link bellow shows:

And here I'm posting some pictures of how the fiberglass was took off.
You have to do it in both sides of the muffler.

[MCD]

I don't know what mods this guy did, but mine sounds exactly like this:

[rustyminded]

Originally Posted by MCD

With my setup (catless dp, no resonator and stock muffler with no fiberglass inside) I have ZERO drone. The sound is amazing, and burble at every downshift, and burp at every upshift like a shotgun!

I will post a sound on my car fly-by and believe me it's one of a kind setup lol.. If your car sounds like the last video it's SUPERB !! do you know any company that would sell straight pipe just as the resonator dimension ?! as I don't want to do any welding just bolt-on

[slmdgee]

Originally Posted by rustyminded

I will post a sound on my car fly-by and believe me it's one of a kind setup lol.. If your car sounds like the last video it's SUPERB !! do you know any company that would sell straight pipe just as the resonator dimension ?! as I don't want to do any welding just bolt-on

post up

[MCD]

Originally Posted by rustyminded

I will post a sound on my car fly-by and believe me it's one of a kind setup lol.. If your car sounds like the last video it's SUPERB !! do you know any company that would sell straight pipe just as the resonator dimension ?! as I don't want to do any welding just bolt-on

Sorry I'm from Brazil, I think that I can't help you...
Luckly here we have many muffler shops that can do it...

[TomDenmark]

MCD

I'm also from Brazil SP, I've just ordered JB4 for my N20 320i.
Could you tell me where you bought your downpipe?

[MCD]

Originally Posted by TomDenmark

MCD

I'm also from Brazil SP, I've just ordered JB4 for my N20 320i.
Could you tell me where you bought your downpipe?

Hi Tom, I bought it from ER (Evolution RaceWerk). They sent me by DHL and I received it in 4 days.
But if you want, GIBA at São Bernardo had mine as a prototype to make a mold and now they are selling!
I sold my 328i, if you want I have some bolt on's to sell, such as AFE Intake, P3 cars digital gauge, two set of wheels (18" and 19"), and rear aero. My DP is with a friend, but I don't know if he will really use it, so if you want I can call him and ask for it.

Cheers!

[TomDenmark]

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