Will drilling holes result in lost power?

salcuta88 · July 17th, 2014, 10:13 AM

Will drilling holes between the bolts on the stock exhaust make me lose power?

DaBlue1 · July 17th, 2014, 10:35 AM

No, but it won't gain you any power either.

choneofakind · July 18th, 2014, 05:47 AM

it will also sound like poop. don't.

dcj13 · July 18th, 2014, 06:36 AM

General "rule of thumb": Don't drill holes in an otherwise perfectly good vehicle.

Foxrider64 · July 21st, 2014, 09:05 AM

Quote:

Originally Posted by dcj13

General "rule of thumb": Don't drill holes in an otherwise perfectly good vehicle.

Safety wiring

capt_bugaloo · July 21st, 2014, 09:53 AM

I've never understood the fascination some riders have with making their motorcycle louder.
Louder equals more attention from Officer Friendly.

As for the argument that noise gains the attention of dumb cagers, that's what a horn is for.

LittleRedNinjette · July 21st, 2014, 09:54 AM

Sounds cooler.

spooph · July 21st, 2014, 09:56 AM

Vlad, are you planning on drilling the holes for more noise? If so, I got an older JISU can that's a bolt on that will get you all the noise you want.... :P

capt_bugaloo · July 21st, 2014, 10:03 AM

Quote:

Originally Posted by LittleRedNinjette

Sounds cooler.

You know what sounds really cool?
Sleeping in late on Sunday morning without being woken up by your neighbour's noisy bike.

LittleRedNinjette · July 21st, 2014, 10:20 AM

Haha, straight pipes? Thats too much for me.

Good sound doesn't mean as loud as a fighter jet doing a fly buy.

I personally don't like the sound of the stock pipe and can understand wanting to make it sound better. But to each his/her own.

salcuta88 · July 21st, 2014, 11:10 AM

Quote:

Originally Posted by spooph

Vlad, are you planning on drilling the holes for more noise? If so, I got an older JISU can that's a bolt on that will get you all the noise you want.... :P

Not noise, deeper sound. Not the Harley type of noise.

LittleRedNinjette · July 21st, 2014, 11:21 AM

I'm no expert but i believe you would need to disassemble the pipe and drill the holes on the inside then put it back together.

You don't want to just drill them straight through the pipe.

If you realy want it to sound good i would look for a good slip on. I had a Danmoto on my 250 but even with the baffle it was a loud ass pipe. I have a Two Brothers pipe on my 300 and it is awesome. Its not insanely loud (you can have a normal conversation next to it) but it sounds so good. Much better the the Danmoto on the 250.

You may be able to find a used one in good shape.

Hero Danny · July 21st, 2014, 06:50 PM

Guy wants a louder exhaust, let him have it. I wouldn't go drilling holes, slip ons are rather cheap and sound + look nice.

choneofakind · July 21st, 2014, 08:01 PM

At least a slipon has a perf tube and glass packing. Seriously do you understand acoustics at all? You have to muffle to some extend to get the low rumble without the huge rasp. Just drilling holes releases all the nasty rasp the stock can is attempting to muffle in the first place.

Bleh. It will sound like poop. At least a silly slipon will sound rumbly. Better than a muffler with a bunch of extra little holes in it.

DaBlue1 · July 22nd, 2014, 01:56 PM

Quote:

Originally Posted by salcuta88

Not noise, deeper sound. Not the Harley type of noise.

Want to change the sound?
Start by changing the intake noise first and see how you like it.
1.) Snorkel removal
2.) add 2 needle shims
3.) install an aftermarket drop in filter.

If that's still not enough then go for the slip on. BTW you'll be already 3 steps ahead of the game when you get the slip on.

spooph · July 22nd, 2014, 03:56 PM

Quote:

Originally Posted by salcuta88

Not noise, deeper sound. Not the Harley type of noise.

Deeper means accentuating the lower frequencies and limiting the higher ones... So, you're looking for the longest slip you can find.. A full exhaust system will also give more "throat"/deeper sound, but it's hard to remove the high pitched whine from 12K RPM's....

So, it will be raspy no matter what you do....

Quote:

Originally Posted by DaBlue1

Want to change the sound?
Start by changing the intake noise first and see how you like it.
1.) Snorkel removal
2.) add 2 needle shims
3.) install an aftermarket drop in filter.

If that's still not enough then go for the slip on. BTW you'll be already 3 steps ahead of the game when you get the slip on.

THIS ^^^^^^^^^^^^^^^^^^

I cut a couple of holes in the airbox and the sound is pretty awesome...

Also, removal of the Kleen air emissions stuff, and a little filter instead opens up valve/head noise and helps with the throaty sound....

This reminds me of that one time I ran the bike without a valve cover on... sounded wicked, like it was from the 1920's....

July 17th, 2014, 10:13 AM	#1
salcuta88 ninjette.org guru Name: Vlad Location: Weaverville, NC Join Date: Jul 2014 Motorcycle(s): 2011 Ninja 250R (Sold), 2015 Rocky Mountain Soul (Runs on fat) Posts: 404	Will drilling holes result in lost power? Will drilling holes between the bolts on the stock exhaust make me lose power?

July 21st, 2014, 09:53 AM	#6
capt_bugaloo motorcycle rider Name: Bruce Location: Victoria, BC Join Date: Apr 2009 Motorcycle(s): '14 Yamaha V-Star 650 Custom (silver) Posts: A lot.	I've never understood the fascination some riders have with making their motorcycle louder. Louder equals more attention from Officer Friendly. As for the argument that noise gains the attention of dumb cagers, that's what a horn is for. __________________________________________________ '14 Yamaha V-Star 650 Custom (silver)

July 21st, 2014, 09:54 AM	#7
LittleRedNinjette Certified Troublemaker Name: Teri Location: Hamilton, NJ Join Date: Oct 2012 Motorcycle(s): 2006 Ninja 250r "Pikachu", 2017 Ninja 650 "Epona" Posts: A lot. MOTM - Aug '13, Aug '14, Feb '17	Sounds cooler. __________________________________________________ Raven's Rejuvenation A bruise is a lesson... and each lesson makes us better...

July 21st, 2014, 09:56 AM	#8
spooph ninjette.org certified postwhore Name: Spooph Location: Golden, CO Join Date: Jul 2010 Motorcycle(s): '08 Ninja 250R Posts: A lot. MOTM - Oct '15	Vlad, are you planning on drilling the holes for more noise? If so, I got an older JISU can that's a bolt on that will get you all the noise you want.... :P __________________________________________________ My therapist has 2 wheels and a seat. If you are ever in doubt to my tone, please refer to my avatar.

July 21st, 2014, 10:20 AM	#10
LittleRedNinjette Certified Troublemaker Name: Teri Location: Hamilton, NJ Join Date: Oct 2012 Motorcycle(s): 2006 Ninja 250r "Pikachu", 2017 Ninja 650 "Epona" Posts: A lot. MOTM - Aug '13, Aug '14, Feb '17	Haha, straight pipes? Thats too much for me. Good sound doesn't mean as loud as a fighter jet doing a fly buy. I personally don't like the sound of the stock pipe and can understand wanting to make it sound better. But to each his/her own. __________________________________________________ Raven's Rejuvenation A bruise is a lesson... and each lesson makes us better...

July 17th, 2014, 10:35 AM	#2
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	No, but it won't gain you any power either.

July 18th, 2014, 05:47 AM	#3
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	it will also sound like poop. don't.

July 18th, 2014, 06:36 AM	#4
dcj13 Participant Name: Dave Location: South of Seattle Join Date: Oct 2012 Motorcycle(s): '94 K75 std Posts: Too much. MOTM - Aug '15	General "rule of thumb": Don't drill holes in an otherwise perfectly good vehicle.

July 21st, 2014, 11:21 AM	#12
LittleRedNinjette Certified Troublemaker Name: Teri Location: Hamilton, NJ Join Date: Oct 2012 Motorcycle(s): 2006 Ninja 250r "Pikachu", 2017 Ninja 650 "Epona" Posts: A lot. MOTM - Aug '13, Aug '14, Feb '17	I'm no expert but i believe you would need to disassemble the pipe and drill the holes on the inside then put it back together. You don't want to just drill them straight through the pipe. If you realy want it to sound good i would look for a good slip on. I had a Danmoto on my 250 but even with the baffle it was a loud ass pipe. I have a Two Brothers pipe on my 300 and it is awesome. Its not insanely loud (you can have a normal conversation next to it) but it sounds so good. Much better the the Danmoto on the 250. You may be able to find a used one in good shape. __________________________________________________ Raven's Rejuvenation A bruise is a lesson... and each lesson makes us better...

July 21st, 2014, 06:50 PM	#13
Hero Danny Inline 4!!! Name: Danny Location: MA Join Date: May 2014 Motorcycle(s): 2008 CBR600rr, 1987 KLR 250 Posts: A lot.	Guy wants a louder exhaust, let him have it. I wouldn't go drilling holes, slip ons are rather cheap and sound + look nice. __________________________________________________ Be careful. Remember you are invisible

July 21st, 2014, 08:01 PM	#14
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	At least a slipon has a perf tube and glass packing. Seriously do you understand acoustics at all? You have to muffle to some extend to get the low rumble without the huge rasp. Just drilling holes releases all the nasty rasp the stock can is attempting to muffle in the first place. Bleh. It will sound like poop. At least a silly slipon will sound rumbly. Better than a muffler with a bunch of extra little holes in it.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[RoadRUNNER] - Pot Holes, Sink Holes, and Buckled Roads	Ninjette Newsbot	Motorcycling News	0	August 26th, 2014 03:01 AM
Lost power while, will start but will not idle	spareparts329	1986 - 2007 Ninja 250R Tech Talk	28	August 28th, 2013 06:16 AM
Lost all power out of nowhere	surlistyc	1986 - 2007 Ninja 250R Tech Talk	8	July 12th, 2012 01:28 PM
'07 just lost power	slnarcissist	1986 - 2007 Ninja 250R Tech Talk	6	May 31st, 2012 04:37 PM
lost power? possible causes. looking for advice.	walty87	2008 - 2012 Ninja 250R Tech Talk	16	March 8th, 2012 11:17 AM