Exhaust modification for Fuel Injected (EFI) 2010 model - Kawasaki Ninja 250R Forum
 
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post #1 of 4 (permalink) Old 09-03-2011, 09:59 PM Thread Starter
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Join Date: Aug 2011
Location: Hyderabad, AP, India
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Question Exhaust modification for Fuel Injected (EFI) 2010 model

Hi,

I have a 2010 EFI Ninja 250 R. I want to do a full system exhaust mod from Yoshi / 2 Bros / Area P.

1. Does the bike need to be re-tuned for these to work properly? Or can I just get it fitted and start seeing improved perf?
I'm assuming re-jetting can't be done because there are no carburettors?
Also, I don't have any dyno tuning centers anywhere close to me.

2. What do I do with the O2 sensor? Yoshimura folks said I'd need to install an O2 sensor bung, though they have not tested their exhaust system with EFI models.
Is this accurate? What would happen if I don't 'bung' it? What happens if I do?

Please help, I am a noob when it comes to mods.
chaoshorizon is offline  
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post #2 of 4 (permalink) Old 10-01-2011, 12:41 PM
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The US version ninja 250r is NOT fuel injected … all are carbureted
rn250r is offline  
post #3 of 4 (permalink) Old 12-26-2011, 01:05 AM
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Normally if you have O2 sensors the ECU will automatically tune the fuel/air mixture in the engine so no further modifications will be necessary. You will, however, need to punch holes in your headers to install the O2 sensor bungs. This is my current project converting my carbureted 2008 Ninja into a fuel injected type.
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post #4 of 4 (permalink) Old 03-11-2012, 08:57 AM
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Thumbs up Efi

Quote:
Originally Posted by Scattcatt View Post
Normally if you have O2 sensors the ECU will automatically tune the fuel/air mixture in the engine so no further modifications will be necessary. You will, however, need to punch holes in your headers to install the O2 sensor bungs. This is my current project converting my carbureted 2008 Ninja into a fuel injected type.
Scattcatt, please keep us posted how the EFI conversion is going, it is something I`d like to do also.
Bekesat5366 is offline  
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2010, efi, exhaust, fuel, full system, injected, model, modification

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