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Oct 27, 2009, 04:33 AM
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#1
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Will Exhaust Silencer Reduce Power?
i do have a open dump
if i install the silencer will it reduce power?
will the silencer affect my tune?
Last edited by MR. EVO MR; Oct 27, 2009 at 02:57 PM.
Reason: added third line
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Oct 27, 2009, 04:51 AM
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#2
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yes and no--- now when you say open dump- do you mean wastegate or open downpipe
-a silencer will not reduce horsepower- if it does, maybe like 2hp!--it only tapers down about 3 incheck of the muffler-----
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Oct 27, 2009, 05:05 AM
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#3
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it reduce the airflow hence power will be restricted but its not much
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Oct 27, 2009, 05:14 AM
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#4
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Answer to your question is - YES!!!
If you lose 3-6hp. It's STILL HP lost! So YES!
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Oct 27, 2009, 06:21 AM
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#5
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Definitely! These cars don't like silencers.
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Oct 27, 2009, 06:50 AM
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#6
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yes emp open dump tube
2-3 hp is not much, no big deal.
what else does a silencer effect besides hp and noise ?
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Oct 27, 2009, 07:20 AM
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#7
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Silencer would also effect the amount of backpressure through your exhast since it has to push it open
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Oct 27, 2009, 09:42 AM
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#8
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i have an apexi active silencer that worked great with my loud jun bl non restricted exhaust(no cat). spring loaded, so it opens up when you're at full throttle. i don't drive my car on the street anymore, so i am selling it if anyone is interested.
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Oct 27, 2009, 09:49 AM
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#9
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I could feel when my silence was in. Seriously felt like a 20hp loss on my old evo. 3" exhuast reduced down to a little over 1" is a huge restriction. Ebay TBE.
Last edited by DontStopMe; Oct 27, 2009 at 10:07 AM.
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Oct 27, 2009, 12:09 PM
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#10
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The loss is definitely more than 3-5 whp.
One of the tuner magazines made a test with a silencer. On a Mazda miata the power drop was minimal, I think around 3-4whp but on a turbocharged 200sx with an sr20dett I think thy lost 16whp...
Now can you imagine my fs635 going from a full 3" to 1"? if I go full boost I think I could even damage the turbine blades because of the backpressure!
I bet you I would loose way more than 20whp!!!
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Oct 27, 2009, 12:11 PM
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#11
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the more power your car makes the more power the silencer will rob
on a turbo'd car it's a lot more than 3-5 hp
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Oct 27, 2009, 12:24 PM
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#12
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they just did this test on i think it was import tuner or some other mag and they did it on a turbo 240 sx and it lost i htink it was like 14hp and hit the torque curve sooner than with out the silencer
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Oct 27, 2009, 03:05 PM
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#13
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what about my tune?
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Oct 27, 2009, 03:14 PM
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#14
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If you have an O2 dump, then WOT power would not be affected at all.
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Oct 27, 2009, 03:24 PM
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#15
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Your still having exhaust flow come out the exhaust then so its going to reduce your flow by having the silencer.. why not put a quieter muffler on the car - magnaflow race series or add one upstream
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car, cars, charged, damage, exhaust, forum, hp, install, open, power, reduced, rob, silencer, turbo, wastegate  |
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