I have a new OBX B5 muffler that came with the silencer (the adjustable kind that screws inside the muffler tip) and I friend told me to take it off because it restricts exhaust--and affects power. I have it off, but it's a bit loud for my taste...my question is, is this true? Does a silencer restrict exhaust flow?

 

well since it's an object in the way of the flow of exhaust, the answer is yes but nothing too drastic i wouldnt imagine.

 

Well according to Tanabe putting on the Silencer you lose 7hp on the Racing Med.

 

Anyone else?

BTW: I know OBX sux, but I had to do a new cat and piping too, so I was on a budget

 

for some stupid reason, my silencer affected my idle, but didn't seem to slow the car down much.

 

On the N1 i know you loose a little bit o' HP, but you gain TQ

 

Ya I have the same muffler and I notice a difference when I take it out at the autoX.

BTW I love my OBX. The construction is great. Full SS, perforated inner pipe, SS and fiberglass packing. I don't see anything wrong with it.

 

ttt

 

anyone else?

 

USually most honda owners have too free flowing of an exhaust. The silencer will reduce HP but you will see a torque increasement at lower RPM. Overall is does effect the HP numbers.

 

 

i have a focuz muffler with custom 2.25piping and i tested it with the silencer on and off (on a dyno) and it came up giving me same hp and 1more torque and the sound was not silenced... it was still loud

 

Is that with the silencer on? I have 2.25" custom piping too.

 

yup, i think i lost 1hp and gained 1tq actually.....

 

well considering that exhaust doesnt relly add anything major to the power band I wouldnt worry about it...

 

i'd say use it if it's too loud for you. are you really going to feel 1hp? not likely. it won't make a difference in racing, and if you want to shoot your car for being too loud, it just wouldn't make any sense to not silence it IMO.

 

the silencer most definitly causes a loss of hp's. Not to mention it looks gay.

peace,
chazz