MR. EVO MR

iTrader: (9)

i do have a open dump

if i install the silencer will it reduce power?

will the silencer affect my tune?

4g634life

iTrader: (4)

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-----

skyblas

it reduce the airflow hence power will be restricted but its not much

Domolution

iTrader: (74)

Answer to your question is - YES!!!
If you lose 3-6hp. It's STILL HP lost! So YES!

Sixth_Vang

iTrader: (2)

Definitely! These cars don't like silencers.

MR. EVO MR

iTrader: (9)

yes emp open dump tube

2-3 hp is not much, no big deal.

what else does a silencer effect besides hp and noise ?

Bobster22388

iTrader: (13)

Silencer would also effect the amount of backpressure through your exhast since it has to push it open

tc17

iTrader: (23)

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.

DontStopMe

iTrader: (19)

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.

kouzman

iTrader: (6)

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!!!

chaotichoax

iTrader: (149)

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

Ozrally06

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

MR. EVO MR

iTrader: (9)

what about my tune?

TxEvo8

iTrader: (5)

If you have an O2 dump, then WOT power would not be affected at all.

BoostWhore

iTrader: (42)

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