Noisier, safer, more power, more fun

[Old Steve]

OK, I'm still on my learners license so I'm limited to 250cc. I've got a Hyosung GV250 cruiser, one reason why I bought her was because I thought I'd be more visible on her - she's probably the biggest learners bike out there. However I had a young boy racer pull right out into my space on a two lane urban road (thread somewhere in here) a week or so ago, so I decided to do a little modification to make myself a little more noticeable.

Today I drilled out the pop rivets which hold in the final baffles on my bikes exhausts and removed them, the baffles that is, the rivets just dropped out. The final baffle is just a small disc about 40 mm in diameter with a short pipe which goes back into the silencer. So I now have no last baffle and a 30 mm hole/straight through into the silencer. Much noisier, definitely noticeable but not neighbour annoyingly noisier.

Took her for a run after surgery, she's got a distinct exhaust note now - my wife says she's rougher but I think she's delightfull. Bit of a crackle on throttling back, a distinct ponka-ponka sound at idle. But I feel a lot safer - well that's my excuse for doing it! I'll see if I get any official notice, but she's not any noisier than a lot of bigger bikes.

Out on the run I noticed she'd pick up faster, pull away from lower revs easier, and cruised ten or twenty km/hr faster on the flat. I put that down to an increase in power, somewhere I read that opening up the exhaust could give up to 10% more power. Briefly, I'm thrilled.

[CookMySock]

See if you can find someone with a properly done noisy pipe on their hyo. I think you will be surprised.

Steve

[Slyer]

There's no point making your bike louder for boy racers, what with them going the speed of sound and all.

[PirateJafa]

somewhere I read that opening up the exhaust could give up to 10% more power.

10%? Bah.

Painting it red will add a easy 20%.

[Tryhard]

Try air horns lol

[Old Steve]

10%? Bah.

Painting it red will add a easy 20%.

It is red. So that's 30% more power. Up to a total of 5 kW now

[BuzzardNZ]

Actually, I think having a loud noisey bike does add to ones saftey. The increased road presense lets cars know you are around. Also, freer flowing pipes will make the bike run faster, and also possibly feel a bit rougher.

Most car's can't pull in ahead of me, due to the fact I've already passed them

[R-Soul]

It is red. So that's 30% more power. Up to a total of 5 kW now

Now try putting a Honda sticker on it- it will blow your brains out...

[sil3nt]

Now try putting a Honda sticker on it- it will blow your brains out...

Well it would at least blow you......

[R-Soul]

Well it would at least blow you......

yeah that makes me louder - and therfore safer!!

[NighthawkNZ:Me]

Actually, I think having a loud noisey bike does add to ones saftey. The increased road presense lets cars know you are around.

Crap... if the cage has the window up... air con on... stereo blasting and the driver is yaking on cell phone they still ain't going to hear or see you...

Also, freer flowing pipes will make the bike run faster, and also possibly feel a bit rougher.

it may... but only if you have done the rest, carbs, air filter... blah blah blah free in free out... and even then what % very little... and probably not noticeable for the road... only need to start doing all that for the track

[BuzzardNZ]

Crap... if the cage has the window up... air con on... stereo blasting and the driver is yaking on cell phone they still ain't going to hear or see you...

My point was in general, not if what you said above was going on.

it may... but only if you have done the rest, carbs, air filter... blah blah blah free in free out... and even then what % very little... and probably not noticeable for the road... only need to start doing all that for the track

This is total BS, just with 2 brothers cans, I noticed a huge increase in low to mid range. After I did the air filter, plus dyno tune, EFI remap, the whole power range is more responsive. Each to his own I guess!

[PirateJafa]

This is total BS, just with 2 brothers cans, I noticed a huge increase in low to mid range. After I did the air filter, plus dyno tune, EFI remap, the whole power range is more responsive. Each to his own I guess!

Would you like a Tui with that?

[Bren]

Progression I see.....so you start with a hyo, then take the baffles out to make it louder....What I see happening from here is you will decide to get a bigger bike and go for a harley cos they are noisey and have "presence" on the road, then since you now ride a mean assed hog you will start to stop waving, you will dress entirely in leather, and then you will say screw you to all other traffic and the laws of the land and pass on double yellow lines etc making as much noise as possible....pure progression!!!

[Old Steve]

Progression I see.....so you start with a hyo, then take the baffles out to make it louder....What I see happening from here is you will decide to get a bigger bike and go for a harley cos they are noisey and have "presence" on the road, then since you now ride a mean assed hog you will start to stop waving, you will dress entirely in leather, and then you will say screw you to all other traffic and the laws of the land and pass on double yellow lines etc making as much noise as possible....pure progression!!!

Hey this is OLD Steve here. 61 with his learner's plate on the back for another five months, wearing a fluoro yellow hi-viz vest, an old biker not a bold biker !!!!

Now the increased safety aspect of having louder pipes is my excuse, all you guys go and work out your own excuse to take your baffles out.