May 24th, 2016, 10:51 AM | #1 |
ninjette.org member
Name: Brandon
Location: Okanagan
Join Date: Jul 2015 Motorcycle(s): EX250-J Posts: 70
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Exhaust header question??
I'm curious the difference between paying for a full exhaust on the 300 w/tuner and putting just the canister on a de catted stock header? Is this exactly the same result? Or do aftermarket headers actually have a wider diameter? Thank you for any input!! I don't have my 300 yet I'm waiting for insurance to pay out for my stolen 250... I am interested in maximum output, but it needs to be bang for the buck also, so if I can save 2-300$ by buying only the slip on and decatting and welding it up myself I will do so. Thank you! Im just planning ahead at the moment so I can do some budgeting |
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May 24th, 2016, 08:07 PM | #2 |
Slower than you.
Name: toEleven
Location: NoVA
Join Date: Oct 2015 Motorcycle(s): CBR600RR, CB750, EX300 (半蔵) Posts: 667
MOTM - May '16
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Quick measurements:
external diameter, stock header 29mm external diameter, aftermarket header 31mm Stock has a crossover, aftermarket doesnt. The routing is completely different. Should you expect exactly the same result? No. Will your plan produce more power than stock? Only a dyno will be sure. My stock system wasn't weighed in pieces, so I don't know how it compares to the 281g (right) and 299g (left) of my aftermarket header pipes.
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May 24th, 2016, 11:17 PM | #3 | |
ninjette.org member
Name: Brandon
Location: Okanagan
Join Date: Jul 2015 Motorcycle(s): EX250-J Posts: 70
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Quote:
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May 28th, 2016, 02:34 PM | #4 |
ninjette.org member
Name: Peter
Location: Mexico
Join Date: Feb 2016 Motorcycle(s): 300 Ninja Posts: 19
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The performance increase isn't worth the expense. If you want a different sound, get a can, such as from Yosh or Leo Vince.
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May 28th, 2016, 02:42 PM | #5 | |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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Quote:
right now, if i had the money it would be worth the extra power gained. |
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May 28th, 2016, 03:27 PM | #6 |
Inline 4!!!
Name: Danny
Location: MA
Join Date: May 2014 Motorcycle(s): 2008 CBR600rr, 1987 KLR 250 Posts: A lot.
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Yup. Also even though you may only see 4-5 horsepower increase, that's a BIG difference on such a small machine.
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May 28th, 2016, 03:59 PM | #7 |
ninjette.org member
Name: Brandon
Location: Okanagan
Join Date: Jul 2015 Motorcycle(s): EX250-J Posts: 70
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The question is not rather or not it's worth it, though I do appreciate the chiming in.
I more wanted to see a different in numbers from some seasoned folk. I also worded the question sort of wrong, If all circumstances were the same: tuner, and can.... (Yoshimura slip on, a decat, and tuner vs yoshimura r77 SYSTEM with tuner) k&n filter & no snorkel on both. Say I get a 10% increase in power from the mods. If the decat and slip on is only 9% I would take that route, as the difference is nill... (1%) |
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May 28th, 2016, 04:22 PM | #8 |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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here is a starting point to compare slip-ons to full systems.
http://www.twobros.com/sku/005-3890/...-TM-SO-14.html |
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May 28th, 2016, 05:47 PM | #9 |
ninjette.org member
Name: Peter
Location: Mexico
Join Date: Feb 2016 Motorcycle(s): 300 Ninja Posts: 19
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I bet the hp increase is 2 at most. Look at the Revzilla website and the Leo Vince slip-on is actually down .5 hp from stock. Most slip-ons might give you 1 hp increase and maybe the Power Commander's good for one more but the 300 Ninja already runs great and doesn't need one. So $1800 for 2 hp? I'd trade in the beloved 300 Ninja for a Honda CB500F for that.
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