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Premium Member
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Discussion Starter #1 (Edited)
Hi,

Was looking into upgrading my injectors, they are OEM (cleaned and flow tested up to 275cc).
I have heard many riders that remove the screen filter in their injectors and get a better idle/low throttle response, because I don't have the skill or time to get them of was thinking about replacing the injectors with these:
315cc 30lb 12-Hole Performance Upgrade Fuel Injector Set Hayabusa GSXR, found on ebay.

So to my question, have anyone tried this or any other injectors?

Bike have some mods (Sprint P08 Filter, Velocity stacks, big airbox mod, bolt ons, upgraded fuel pump, new pressure regulator)
PCV and QS, got 166,6 SAE at the back wheel but I'm not so happy with the low speed/low rpm herking and jerking while riding in the City therefore I looked into maybe change the injectors?

Best Regards,
Marko
 

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Premium Member
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24,541 Posts
No need for different injectors;have you eliminated the Timing Retard thru the ECU? Try that first before going any further.

Bought my Gen1 brand new in 2000&mine did the same just like everyone else's did,that herky jerky throttle at low rpm's is inherent and can be eliminated with an old school TRE or eliminating it thru the ECU....
 

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Premium Member
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Discussion Starter #3
@oldgixxer

I have and GiPro ATRE and it smoothed it out, got a good tune but still after reeding that Busas run smoother without the screens in the injectors i thought why not :)

I'm still wondering if anybody know if I have to get a new tune due to new injectors with more holes?
 

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Captain Obvious ... because obviously it’s obvious
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@oldgixxer

I have and GiPro ATRE and it smoothed it out, got a good tune but still after reeding that Busas run smoother without the screens in the injectors i thought why not :)

I'm still wondering if anybody know if I have to get a new tune due to new injectors with more holes?
If you use those new injectors, not only do you need to tune it but you shouldn't even run it period until you do. Those have 114.5% flow compared to stock, which means you will be extremely rich.
 
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