Sr 650 EFI

  • ifranzani
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Re: Sr 650 EFI

26 Feb 2025 15:04
#909432
Cold starting
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Re: Sr 650 EFI

26 Feb 2025 20:46
#909441
It's always fun to see more of us go down the custom EFI path.

Congrats on the smooth start

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  • TexasKZ
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Re: Sr 650 EFI

27 Feb 2025 17:19
#909484
Excellent!
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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Re: Sr 650 EFI

29 Mar 2025 07:01 - 29 Mar 2025 07:02
#910695
Update
now with intake trumpets it does 46 hp to the wheel
red with intake trumpeters, green without (38 hp)

With conservative mapping
 
Last edit: 29 Mar 2025 07:02 by ifranzani.

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Re: Sr 650 EFI

29 Mar 2025 11:14
#910705
Wow, that is a significant increase. I wonder if a little more could be found by adjusting the length and taper of the trumpets?
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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Re: Sr 650 EFI

29 Mar 2025 11:48
#910708
Sure, I've only tried these trumpets
normally,
longer = more torque
shorter = more power
 

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Re: Sr 650 EFI

29 Jan 2026 09:28
#921041
New look

 

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Re: Sr 650 EFI

29 Jan 2026 09:29
#921042
Others
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Re: Sr 650 EFI

29 Jan 2026 11:56
#921045
Great work, how is the AFR across the rev range ? how does it ride ?

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  • ifranzani
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Re: Sr 650 EFI

29 Jan 2026 12:48 - 29 Jan 2026 12:48
#921047
with the accelerator at maximum arround 0.85 and idling 1-1.05
Last edit: 29 Jan 2026 12:48 by ifranzani.
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  • chopper1963
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Re: Sr 650 EFI

29 Jan 2026 16:18
#921053
No fear!
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Re: Sr 650 EFI

31 Jan 2026 09:09
#921090
I can't wait until there is a kit ...

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