To resonator or not

wiz043 · Postby **wiz043** » Thu Apr 14, 2011 9:44 am

NitroDann wrote:
wiz043 wrote:
NitroDann wrote:
wiz043 wrote:A lot of people are of the opinion that a resonator restricts performance but I do not believe this is true. Some time back I tried to explain to a mate of mine who had an MR2 that the resonator boxes were there for a reason and not to remove them but he went ahead anyway and removed them and fitted a pod filter straight on to the throttle body but then found the rasping and drumming noise inside the cabin unbearable, made worse with the engine being right behind your left ear of course.

I feel sorry for you both.

Seriously, you dont like intake roar? Come for a run in my NA its deafening at 8500rpm and everyone loves it.

Dann

I LOVE intake roar but its the resonating droning noise I can't stand. They are two entirely different things! The 'rasping and drumming' noise I referred to in my post was because the resonators were removed.

I once owned an MR2 with intake mods but with resonators retained and the intake sound was fantastic but with absolutely no drone inside the cabin.

Sounds like your average 3sgte needs much bigger cams lol.

Dann

No idea what you mean----it wasn't a turbo MR2 anyway. The point I was trying to make is that improving intake and intake noise by whatever means is great but removing resonator boxes on any car will invariably cause a drone and vibration within the cabin that can be quite annoying (and probably damaging) to the ears.

Postby **NitroDann** » Thu Apr 14, 2011 1:03 pm

I mean no twin cam with decent sized cams has a bad intake drone.

I have a 2.5 inch pipe running to an enclosed pod filter (Enclosure is the same shape and but much larger than a pod with a 100mm inlet) and the inlet to this aims straight at the passenger through the firewall, and my god its loud at full throttle but no ones has ever mentioned any drone because there isnt any. I also have an ae86 with ITB's straight to 100mm trumpets which has no drone, and another rally car with a pod coming off the TB and no drone there either. The resonator boxes are tuned to cancel noise at cruise rpm, not drone, otherwise they would be shaped like a hotdog not like a resonance chamber.

Dann

wiz043 · Postby **wiz043** » Thu Apr 14, 2011 1:18 pm

NitroDann wrote:I mean no twin cam with decent sized cams has a bad intake drone.

I have a 2.5 inch pipe running to an enclosed pod filter (Enclosure is the same shape and but much larger than a pod with a 100mm inlet) and the inlet to this aims straight at the passenger through the firewall, and my god its loud at full throttle but no ones has ever mentioned any drone because there isnt any. I also have an ae86 with ITB's straight to 100mm trumpets which has no drone, and another rally car with a pod coming off the TB and no drone there either. The resonator boxes are tuned to cancel noise at cruise rpm, not drone, otherwise they would be shaped like a hotdog not like a resonance chamber.

Dann

The resonator boxes are put there for a purpose and that is to eliminate drone at any rpm, not only cruising, on a factory standard vehicle If you have removed them and designed your intake setups to cancel any drone then good luck to you. No one ever said that it couldn't be done.

Postby **NitroDann** » Thu Apr 14, 2011 1:25 pm

If resonance chambers eliminated drone we would use them in exhausts rather than hotdogs. Ie the topic of this thread.

Dann

wiz043 · Postby **wiz043** » Thu Apr 14, 2011 1:36 pm

NitroDann wrote:If resonance chambers eliminated drone we would use them in exhausts rather than hotdogs. Ie the topic of this thread.

Dann

Mate---resonance chambers and resonator boxes are 2 different things. Resonance chambers ARE used in exhausts.
If you want more info on what I am referring to google 'purpose of intake resonator boxes".

Postby **NitroDann** » Thu Apr 14, 2011 2:12 pm

I think we are debating a matter of semantics and im sorry if its my end that is incorrect.

Dann

93_Clubman · Postby **93_Clubman** » Thu Apr 14, 2011 2:39 pm

wiz043 wrote:If you want more info on what I am referring to google 'purpose of intake resonator boxes".

aka helmholtz resonator

wiz043 · Postby **wiz043** » Thu Apr 14, 2011 3:13 pm

NitroDann wrote:I think we are debating a matter of semantics and im sorry if its my end that is incorrect.

Dann

Yeah---It's probably my fault coz I am talking about intake resonator boxes connected to the throttle body and looking back through the thread I can now see that the discussion appears to be mainly about exhaust resonance chambers which may or may not cause 'barking' if left off or altered.

Different thing altogether---sorry if I caused confusion.