Sp2 throttle body on a SP1 - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 11 (permalink) Old 06-27-2011, 10:09 AM Thread Starter
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Sp2 throttle body on a SP1

Hi can sp2 throttle body will fit into SP1 turnone airbox ?

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post #2 of 11 (permalink) Old 06-27-2011, 03:45 PM
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The SP2 throttle bodies will fit with a T-O SP1 airbox.
You'll also need the mount rubbers for the throttle bodies to mount.
Plus the SP2 ECU.

However, the T-O SP1 airbox itself will not fit in an SP2 frame due to the added gussets near the steering head.
The T-O SP2 airbox will fit both models.
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post #3 of 11 (permalink) Old 06-28-2011, 10:30 PM Thread Starter
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Tks sub, but can I use SP1 ECU?

1/6 HRC Fast Trottle,Scorpion SS Slipon Race Can,15/42(530) Afam Sprocket,PC3 WZ Yoshi Mapp,Brembo RCS Master Pump,After Market Brake Line, Flapper Valve Mod,Pair Removal Mod,Rumble Under Tray,RockWall Clipon,Endurance Race Fairing,
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post #4 of 11 (permalink) Old 06-29-2011, 08:44 AM
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Tks sub, but can I use SP1 ECU?
I can't recall if you can or not.
Of course it would be best if you use the SP2 ECU.

Are you trying to gain more top-end track speed with the swap?
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post #5 of 11 (permalink) Old 06-30-2011, 01:07 AM Thread Starter
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Yup... Trying to get top end as I'm using 15/44 sprocket set up

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post #6 of 11 (permalink) Old 06-30-2011, 04:43 AM
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If you want more top end speed, as I understand you, drop your rear sprocket back to the standard 40T.More engine power will get you there quicker, but the sprocket sizes dictates your top speed.
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post #7 of 11 (permalink) Old 06-30-2011, 05:50 AM Thread Starter
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If you want more top end speed, as I understand you, drop your rear sprocket back to the standard 40T.More engine power will get you there quicker, but the sprocket sizes dictates your top speed.
I have tried it from stock till up by +2..
So far more fast pick up is +44, my setting..

Because im a bit abit confused on up grade to Sp2 throttle body..
someone told me it not necessary to use SP ECU if i have PC3..
IS it possible..

1/6 HRC Fast Trottle,Scorpion SS Slipon Race Can,15/42(530) Afam Sprocket,PC3 WZ Yoshi Mapp,Brembo RCS Master Pump,After Market Brake Line, Flapper Valve Mod,Pair Removal Mod,Rumble Under Tray,RockWall Clipon,Endurance Race Fairing,
Hyper Pro 3D Shock,Turnone Kevlar Airbox & Carbon Intake, Hyper Pro Height Raiser Kit,Hyper Pro Linear Fork Spring,Harris Rear Set, CF Stator & Clutch Cover..more to come..., Slipper Clutch,Radiator Scoop,Factory Pro Shift Kit,
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post #8 of 11 (permalink) Old 06-30-2011, 10:08 AM
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I have tried it from stock till up by +2..
So far more fast pick up is +44, my setting..

Because im a bit abit confused on up grade to Sp2 throttle body..
someone told me it not necessary to use SP ECU if i have PC3..
IS it possible..
That's why I was a bit guarded with my previous answer.

In theory the SP1 ECU use should be ok, since the Power Commander alters injector timing and should compensate for any differences between flow rates (if any) between the SP1 and SP2 injectors.

The fuel pressure is the same, so it may be possible there is no flow rate difference at all, just better atomization with the SP2 injectors.

All I can say is, give a try and see.
Just let us know what you find, for future reference.
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post #9 of 11 (permalink) Old 06-30-2011, 01:28 PM
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I adapted SP2 injectors to fit into my SP1 without the SP2 ECU but using a power commander.It need a remap, but in the end there was no real power difference, it did seam to have smoother throttle responce, but I ended up switching back to SP1 injectors, just to keep it a SP1
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post #10 of 11 (permalink) Old 06-30-2011, 05:53 PM Thread Starter
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I luv the size 15/44 sprocket. It's give a more acceleration.

1/6 HRC Fast Trottle,Scorpion SS Slipon Race Can,15/42(530) Afam Sprocket,PC3 WZ Yoshi Mapp,Brembo RCS Master Pump,After Market Brake Line, Flapper Valve Mod,Pair Removal Mod,Rumble Under Tray,RockWall Clipon,Endurance Race Fairing,
Hyper Pro 3D Shock,Turnone Kevlar Airbox & Carbon Intake, Hyper Pro Height Raiser Kit,Hyper Pro Linear Fork Spring,Harris Rear Set, CF Stator & Clutch Cover..more to come..., Slipper Clutch,Radiator Scoop,Factory Pro Shift Kit,
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