DANMAN
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| posted on 24/2/16 at 12:07 AM |
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CBR900RRW TPS?
I am running a CBR900RRW engine in my car and have only just found out that they are supposed to have a Throttle Position Sensor fitted. I have had
the car for a few years and it wasn't on there when I bought it so I have thought about getting one and putting it on there, however it has a
Factory Pro +2 degrees ignition advancer fitted by the previous owner. Would this advancer be the reason the TPS has been removed, does it make it
obsolete?
Also, is it worth getting the +4 degrees advancer instead? I only ever run 98RON fuel so figure it would help.
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MikeRJ
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| posted on 24/2/16 at 12:01 PM |
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The advancer doesn't negate the use the of the TPS, so that's not why it was removed. The TPS gives the equivalent function of a vacuum
advance, advancing the ignition under light engine engine loads to improve economy and responsiveness.
I don't know for sure what happens when the tps is completely disconnected, but I suspect the ignition unit will default to the safest state
which would give the advance required for wide open throttle for the entire RPM range.
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jossey
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| posted on 24/2/16 at 05:33 PM |
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Doesn't make any difference when your hammering the car.
Thanks
David Johnson
Building my tiger avon slowly but surely.
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mark chandler
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| posted on 24/2/16 at 05:47 PM |
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If it was built with a 893 engine or uses an early module it would not have had a TPS.
Do not worry about it unless you want to save a little fuel.
Some people run CBR600 Modules as they have a higher Rev limit.
[Edited on 24/2/16 by mark chandler]
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DANMAN
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| posted on 25/2/16 at 04:16 AM |
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Thanks guys. It is the 919 engine (RRW) so should have had it, not sure why it has been removed but figured if I can find a cheap one I will throw it
on there.
Came across the fact it was supposed to have one whilst researching ways to get more power from the engine.....sigh, I think it would be cheaper to
make up a new engine cradle, etc and go to a 2008 CBR1000 engine. Can't picture getting a 900RRW up to 170HP+ without forced induction and that
would probably cost more than swapping over to a CBR1000 engine anyway.
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