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Post by harleyracer59 on Feb 12, 2019 22:44:42 GMT -5
found 2 polini pipes that look to have what I can only describe as a boost tube. what is it really, anyone have experience? 190mech, would these help as an addition to any expansion chamber?
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Post by ryan_ott on Feb 12, 2019 23:04:16 GMT -5
Only reason I could see for it is to adapt the original emissions crap to the pipe keeping it legal for certain areas.
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Post by ThomasTPFL on Feb 12, 2019 23:22:04 GMT -5
Dong. Increases low end. Look up J-bot’s experiments on MA.
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Post by ThomasTPFL on Feb 12, 2019 23:59:07 GMT -5
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Post by harleyracer59 on Feb 13, 2019 1:21:30 GMT -5
I read the link and am still as confused as in the first place... something is lost in translation??? lol can someone please interpret for me???
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Post by Lucass2T on Feb 13, 2019 2:02:12 GMT -5
Stock exhausts have these too. I think its an acoustic damper or something. I cut off and welded shut a ton of these on oem exhausts thinking they were restrictors. But it didnt affect power, or at least speed or acceleration never really increased.
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Post by aeroxbud on Feb 13, 2019 3:56:35 GMT -5
It's a resonator tube. It's a form of restriction. Polini have very nicely made these ones so they don't work for you 😁
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Post by fuzzyruttin on Feb 16, 2019 19:23:13 GMT -5
It's a resonator tube. It's a form of restriction. Polini have very nicely made these ones so they don't work for you 😁 Was going to reply to this thread a few days ago but got caught up looking for this pic. Finally found it. I believe the tube is the same thing/concept on my car's exhaust... it's a resonator pipe to help deaden the loudness. As I understand it does not affect horsepower. However I also have to say, this exhaust is pretty loud, so I am not sure how much it actually helps.
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Post by aeroxbud on Feb 16, 2019 19:37:56 GMT -5
It's a resonator tube. It's a form of restriction. Polini have very nicely made these ones so they don't work for you 😁 Was going to reply to this thread a few days ago but got caught up looking for this pic. Finally found it. I believe the tube is the same thing/concept on my car's exhaust... it's a resonator pipe to help deaden the loudness. As I understand it does not affect horsepower. However I also have to say, this exhaust is pretty loud, so I am not sure how much it actually helps. Quite a lot of newer cars seem to have these fitted as stock. Anything that's not helping the flow is a restriction in my book. 😈
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Post by fuzzyruttin on Feb 16, 2019 19:51:39 GMT -5
Was going to reply to this thread a few days ago but got caught up looking for this pic. Finally found it. I believe the tube is the same thing/concept on my car's exhaust... it's a resonator pipe to help deaden the loudness. As I understand it does not affect horsepower. However I also have to say, this exhaust is pretty loud, so I am not sure how much it actually helps. Quite a lot of newer cars seem to have these fitted as stock. Anything that's not helping the flow is a restriction in my book. 😈 Not sure if it "helps" or not. I am a bit intrigued by ThomasTPFL 's response because the S is a 2.2L inline 4 with very low torque at the bottom end, but the resonator tube I don't think serves that purpose. A quick look-back response from S2K forum: quote, "the OEM resonator contributes to the VTEC kick." I can only surmise that the same technology is related to high-revving 2Ts.
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Post by harleyracer59 on Feb 16, 2019 20:22:14 GMT -5
when you put it like that it rattled my brain loose of some info. every car on the road these days has these resonator tubes in the air filter/ intake track. they do it for noise. it quiets the intake noise. and in the intake track it does hinder performance. when the air is traveling into the motor, air and noise go down these dead end tubes. it cancels the noise but creates a disturbance in the flow with the returning air "pulse". that's what aftermarket cold air kits/ tubes are just that. a straight tube. and also part of the reason why theyre so loud also
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Post by fuzzyruttin on Feb 16, 2019 20:35:34 GMT -5
Given 2Ts are completely dependent on the basic principals of shockwave technology, there is a deeper science here that we can't seem to land on. Google all you want, the answer lies in education! Sorry man, that's all i got \
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Post by ThomasTPFL on Feb 16, 2019 21:15:17 GMT -5
According to the link I posted it’s a dummy pipe.
If you search Jbots “boner” experiments you’ll see where it’s possible to lower the powerband with a resonator pipe, but he uses a valve on his so he can get the top end back when he wants it.
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Post by harleyracer59 on Feb 16, 2019 22:59:38 GMT -5
According to the link I posted it’s a dummy pipe. If you search Jbots “boner” experiments you’ll see where it’s possible to lower the powerband with a resonator pipe, but he uses a valve on his so he can get the top end back when he wants it. ive tried searching that on here and the web. on here it only comes up with your mention. in the web, that bitch google only showed porn... lol can you post a link to these experiments? thanks
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Post by SMALL CC TEK on Feb 17, 2019 0:35:13 GMT -5
Cut that growth off and weld up . That extension kills the sound wave hurts scavenging when you cut it off you will notice a gain. Keeyway hurricanes had smaller ones we cut them off and cut the pipe open pulled the diverter out rewelded the pipes they ran great after that .
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