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Apexi - Active Tail Silencer

Birnie

By Birnie,
in Engines & Forced Induction

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Birnie Veteran

Birnie

Posted
Posted

Hey SAU'ers,

Wouldn't mind dropping the Db level on my straight thru 3inch zorst as it's a daily commuter and can be a bit tiresome after 2hrs driving everyday for 4years.

Anyone using one of these little numbers?

http://www.nengun.com/apexi/active-tail-silencer

(..and is there a local similar option?)

Looks like it could be the goods for driving around town off boost.

Also, if anyone has one, is the spring open or still closed when your cruising at 110km/h on a freeway?

Thanks,

Birnie

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https://www.sau.com.au/forums/topic/177357-apexi-active-tail-silencer/
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MANWHORE Grand Master

MANWHORE

Posted
Posted

Birnie, those are not a good thing at all.

I have an apexi ecv, and with it closed, it makes it quieter, but you literally have no power at all. You pretty much can't accelerate at any decent rate.

e.g. in first, if you floor it, it takes seconds to get up to a decent rpm. Cutting into the free way would be impossible.

I knwo that the device is different to an ecv, but essentially, with it closed, it'll be restrictive and therefore have no power/response etc.

Does your exhaust come with a buttplug? tried driving with it on?

With min, its not as bad as as with the ecv closed, but it doesn't have much power.

BAMR33 Mentor

BAMR33

Posted
Posted

Yeah they're only meant to keep the cops away, they cause huge back pressure. Just put a proper silencer in, they do reduce noise but I wouldn't be revving it out with one in place. Otherwise invest in a decent bodied muffler with with twin tips, they tend to take the drone and headache causing noise away. I personally can't stand noisy exhausts.

Birnie Veteran

Birnie

Posted
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Posted
Birnie, those are not a good thing at all.

I have an apexi ecv, and with it closed, it makes it quieter, but you literally have no power at all. You pretty much can't accelerate at any decent rate.

e.g. in first, if you floor it, it takes seconds to get up to a decent rpm. Cutting into the free way would be impossible.

I knwo that the device is different to an ecv, but essentially, with it closed, it'll be restrictive and therefore have no power/response etc.

Does your exhaust come with a buttplug? tried driving with it on?

With min, its not as bad as as with the ecv closed, but it doesn't have much power.

I understand what youa are saying but i was hoping that if you floored it, even though the revs aren't up there yet, the AFM reading (therefore the air flow) would be going up and be enough to pop the spring open and wala! straight thru (well almost)

I guess there would be a bit of a delay but if you were under track conditions, i'm sure it would be well over the spring limit the whole time.

And as for not much power when commuting, thats fine cause i drive a bit like a granny most of the time so the lower Db would be a bonus.

Also, i searched a bit and seems i could only find one person on here with one and he didn[t say too much about it but i think it was overall positive.

Might try sending them a PM, if i can find it again.

Had a PM from someone who suggested a twin setup between the Cat and the Canon and then have the ECV valve thingy on just 1 pipe.

Could be an interesting idea.

Anyone else tried that?

Or anyhting else?

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