Hello All,

I am planning to perform the 12K service on my '06 S2R 800, with the exception of the TPS reset, and was wondering if you advise that I adjust the valves and belts prior to taking the bike in for the TPS adjustment.

I feel the TPS (throttle position sensor for those doing a search:) needs attention as my bike is idling around 8-900rpm once the bike is at operating temp. I see no need to put off this adjustment unless it is going to be deemed futile once I adjust the valves and throw on new belts.

I would welcome any other suggestions as to why the bike idles so low. It runs like a top otherwise, no mods to speak of.

Thanks,
Michael T
Austin, TX

A TPS reset wouldn't be wasted, but to properly set the throttle bodies, whomever is working on it will be in that general vicinity during the service anyway.

Idle should improve with valve service, but that can be fine tuned during TB setup.

tps reset is just an electronic procedure.  you need the idle speed and quite likely mixture adjusted if it's idling too low.  do it as the final step of the service.

Thanks for the replies, and Eric for your add'l advice.

I will def check/adjust the valves first. Just makes sense, right?

Yours,
Michael

Yes check and adjust valves first.  I would also say get the belts on at that time and let them stretch for a few hundred miles and then retighten.  THEN reset TPS, set idle, and synch throttle bodies all at the same time.  These three things really should be done at the same time for maximum benefit and with the valves and belts set properly.  Any one being out can screw up the other two.

Scott

slight jack, but i recently did my valves/new belts at 6K on the same model and year as michaeltea.  I have unmodified airbox and aftermarket full exhaust system w/ PC3.  Now I'm going to get the throttle bodies synched, BUT I need to raise the idle.  Would it be bad to get it raised without the DDS and then get a custom map?  I figured I paid all that money for the PC3 so why not avoid the extra money to have the idle raised the expensive way if I am going to get a custom map anyways.  Any thoughts anybody? 

The TPS and synch need to be right before you do a map.

Quote from: uclabiker06 on January 22, 2009, 09:36:08 PM
slight jack, but i recently did my valves/new belts at 6K on the same model and year as michaeltea.  I have unmodified airbox and aftermarket full exhaust system w/ PC3.  Now I'm going to get the throttle bodies synched, BUT I need to raise the idle.  Would it be bad to get it raised without the DDS and then get a custom map?  I figured I paid all that money for the PC3 so why not avoid the extra money to have the idle raised the expensive way if I am going to get a custom map anyways.  Any thoughts anybody? 

to raise the idle you wind the air bleeds out, then theoretically (assuming the mixture was right beforehand) richen the idle mixture using the dds, etc, as winding the air bleeds out leans it off.

you can do the same thing, but use the pc3 to richen the mixture again.  the only potential issue here is if someone set the mixture using the trimmer later on it may put your pc3 map off as the trimmer will be different.  but if no one is going to do that then you should be fine.

Thanks for the reply!  Always a pleasure!

Just one point of clarification:  I thought that the PC3 only allows for changes to everything above idle in the power curve.  In other words, from my understanding the PC3 cannot effect the idle mixture just anything above idle...thats what a dealer once told me.  Am I misinformed Brad Black?

RPM range in the PCIII USB goes down to 500 rpm in an advanced map.

IIRC, the PCIII serial style went down to 1000 rpm.

Quote from: uclabiker06 on January 23, 2009, 05:22:19 PM
Thanks for the reply!  Always a pleasure!

Just one point of clarification:  I thought that the PC3 only allows for changes to everything above idle in the power curve.  In other words, from my understanding the PC3 cannot effect the idle mixture just anything above idle...thats what a dealer once told me.  Am I misinformed Brad Black?

Didn't Power Commander lose a court case in California a while back, and now have to deliver "California spec" PCIIIs which don't let you edit the closed loop area any more?

big

PowerCommander got hammered, AFAIK.

The 'street-legal' version has an area in the map that you can't mess with.
I'm not sure if it's restricted to the open-loop area or just an arbitrary area.

Thanks Speeddoog!  I will call Dynojet and get the answer for the specific model I own which is 723-411 (non-california spec), but I wont be going the advanced map route because no lambda sensor thingy on my bike. FYI the only difference b/w the California compliant PCIII EX and regular PCIII is that the California one can't be programmed towards the beginning of the power curve for small throttle openings...in other words for the street, its garbage. 

QuoteThe TPS and synch need to be right before you do a map.

So does that mean I need to reset the TPS at 6K like michaeltea if I have a PCIII??

Edit:  Just spoke w/ a Dynojet rep and he said that the fuel/air is adjustable at idle.