Full Exhaust - Is it really worth it?? - ZX6R Forum
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post #1 of 124 Old 04-24-2017, 12:28 AM Thread Starter
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Question Full Exhaust - Is it really worth it??

I watch Motorcycle Garage on YouTube because they are really informative.
They covered about aftermarket exhaust.

I always thought that slip-ons are kind of junk since it's not really for performance and make the bike louder.

But after watching this video, I don't know if extra 5hp is worth a few thousand dollars. (full system + ECU)

I know if you're racing on track, every little bit of hp counts, but for street use? I don't know..

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post #2 of 124 Old 04-24-2017, 12:44 AM
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You'll get basically the same loudness and street performance by buying a slip on muffler and gutting the catalytic converter from your OEM pipe. Full system is more about weight savings for racing

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post #3 of 124 Old 04-24-2017, 01:07 AM
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post #4 of 124 Old 04-24-2017, 04:20 AM
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The simple version:

Street bikes get slipons
Track bikes get full systems

Anything else is just wasting money

Quote:
Originally Posted by Gawernator View Post
You'll get basically the same loudness and street performance by buying a slip on muffler and gutting the catalytic converter from your OEM pipe. Full system is more about weight savings for racing
Going to have to disagree here. Tuned full exhausts flow a lot better than a gutted OEM exhaust. Weight savings is substantial but there is also a significant performance increase but unless you are competitively racing, its a giant waste of money.
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post #5 of 124 Old 04-24-2017, 06:39 AM
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Originally Posted by PainfullySlo View Post
Going to have to disagree here. Tuned full exhausts flow a lot better than a gutted OEM exhaust. Weight savings is substantial but there is also a significant performance increase but unless you are competitively racing, its a giant waste of money.
How much is significant? It was my understanding it was maybe 1-2 HP? Or does the full exhaust end up with a better hp/tq curve vs. the gutted and slip-on?
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post #6 of 124 Old 04-24-2017, 07:19 AM
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A full system will net you a couple more ponies with appropriate fuelling and shed a few more pounds, but it will also move a significant chunk of thrust further up the rev range. If it's not for the track (and racing, in particular), not only is it a waste of money, but it'll actually make it more work to ride.

There are better ways to spend the $1.k-2k if it's not for racing.
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post #7 of 124 Old 04-24-2017, 07:30 AM
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Quote:
Originally Posted by PainfullySlo View Post
The simple version:

Street bikes get slipons
Track bikes get full systems

Anything else is just wasting money



Going to have to disagree here. Tuned full exhausts flow a lot better than a gutted OEM exhaust. Weight savings is substantial but there is also a significant performance increase but unless you are competitively racing, its a giant waste of money.
That's what I meant, it won't be noticeable on the street. Arrow says you can get like 10% gains with their full system. The flow is for sure better, but I won't claim to be a mechanical engineer either, that's just what I've been told by SPEEDMOB, and they know their stuff!

Last edited by Gawernator; 04-24-2017 at 09:40 AM.
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post #8 of 124 Old 04-24-2017, 10:25 AM
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Originally Posted by gustaveberg View Post
How much is significant? It was my understanding it was maybe 1-2 HP? Or does the full exhaust end up with a better hp/tq curve vs. the gutted and slip-on?
You are understanding wrong, average gains from a full system are at 10hp peak hp or roughly 10% power increase and about the same in torque. I don't know of any other mod that can give you that increase for that price... And that is not taking the weight reduction into account.

Where are you guys getting these 1-2hp gains from a full system? There are dyno sheets posted all over this forum showing 9-10hp

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post #9 of 124 Old 04-24-2017, 10:34 AM
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Quote:
Originally Posted by smokey11 View Post
You are understanding wrong, average gains from a full system are at 10hp peak hp or roughly 10% power increase and about the same in torque. I don't know of any other mod that can give you that increase for that price... And that is not taking the weight reduction into account.

Where are you guys getting these 1-2hp gains from a full system? There are dyno sheets posted all over this forum showing 9-10hp
In many cases, +10 bhp peak, in conjunction with remapping of the fuelling is absolutely possible. The key for me is 'peak'. If you're not going to be keeping it above 12k rpm, there are - in my opinion - better ways to spend that money. 1kg of unsprung weight removed is worth at least twice that in bhp, and it doesn't only affect a limited rev range.

If I'm not racing the bike, I'd sooner put that money toward grippier rubber or even a pair of Dymags. There's even a fair chance these could be moved to another machine with relative ease, which is more than can be said for most full exhaust systems. Let us not forget respringing/revalving the suspension either.

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1999 ZX6R (G2) - Pipewerx exhaust (dB killer removed) | Dynojet Stage 1 | K&N air filter | flushmount front LED indicators | Clear LED tail light with integrated indicators | Scottoiler eSystem | Pyramid Plastics hugger | HID headlight | Stubby levers | HEL braided steel lines | 07 ZX6R radial master cylinder | Bar-end mirrors | Double-bubble screen | Crash bobbins | one hell of an anal-retentive owner.
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post #10 of 124 Old 04-24-2017, 10:36 AM
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Quote:
Originally Posted by smokey11 View Post
You are understanding wrong, average gains from a full system are at 10hp peak hp or roughly 10% power increase and about the same in torque. I don't know of any other mod that can give you that increase for that price... And that is not taking the weight reduction into account.

Where are you guys getting these 1-2hp gains from a full system? There are dyno sheets posted all over this forum showing 9-10hp
I'm speaking of a gutted OEM header with slip-on, VS. a full system. I would expect the full system to perform better, naturally, but I didn't think it would be a 10% difference between full system and the "home-made" gutted header system.
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post #11 of 124 Old 04-24-2017, 10:43 AM
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If you think you need a full exhaust and the extra hp that comes with it on the street then you need to commute in your car for a week or two.

It's pretty easy to forget you're sitting on a missile, even stock.
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post #12 of 124 Old 04-24-2017, 11:43 AM
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If you have the money to burn get a full exhaust.. Just remember any money put into the bike is usually a loss to you since it won't sell for the same price even used. If you happen to go down, praise be the great biking gods to not let it happen, and ding anything up then that is also a loss of money. Again if you have an extra $1-2k that would otherwise be spent on a pool table or summin then go for it.
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post #13 of 124 Old 04-24-2017, 03:16 PM
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If we all lived life by numbers then we probably wouldn't have sportbikes anyway. Let's not pretend otherwise.

The biggest gain in having a full system is in smiles. Sound, bragging rights, self-congratulation, salivation… whatever you get out of it personally is worth something. What that is remains entirely up to you.

For me it's worth it for the sound (assuming you pick the right system for the right engine for your ears). Now I just need the cash.


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post #14 of 124 Old 04-24-2017, 06:36 PM
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i DONT SEE HOW PUTTING MONEY INTO YOUR BIKE COULD BE A "WASTE" OF MONEY ? I BUY ALL THE BEST SHIT POSSIBLE FOR MY BIKE....ITS MY BABY...MY PRIDE AND JOY....MY FRICKIN BIKE !!!!!!!!....SAVE MONEY ON GROCERIES OR A VACUUM CLEANER OR EAT OUT LESS ETC.... BUT "SAVE MONEY" ON YOUR BIKE NO SUCH ANIMAL. MAYBE I AM THE ONLY ONE IN A RELATIONSHIP WITH MY BIKE ?

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post #15 of 124 Old 04-24-2017, 06:55 PM
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i DONT SEE HOW PUTTING MONEY INTO YOUR BIKE COULD BE A "WASTE" OF MONEY ? I BUY ALL THE BEST SHIT POSSIBLE FOR MY BIKE....ITS MY BABY...MY PRIDE AND JOY....MY FRICTION BIKE !!!!!!!!....SAVE MONEY ON GROCERIES OR A VACUUM CLEANER OR EAT OUT LESS ETC.... BUT "SAVE MONEY" ON YOUR BIKE NO SUCH ANIMAL. MAYBE I AM THE ONLY ONE IN A RELATIONSHIP WITH MY BIKE ?
Agreed....happiness is priceless
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