KTM tps setting

jvail134
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jvail134
Anyone know what the stock setting is supposed to be on a 17 KTM 350 sxf? I have been searching for a while and cannot find anything. Looking for what it should be set at with idle turned off.
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Paw Paw
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Paw Paw 8/21/2017 7:21am
8/21/2017 7:21am
Now understand I don't have the actual numbers from the factory, nor do I profess to be an expert, but...

As I understand it the normal reading would be at about .5 volt dc at idle throttle setting, but if it were increased to
about .75 volt or even 1 volt it would make the fuel mix richer at idle and all the way up the rpm range until you have a full 5 volts.
At wide open throttle it would be 5 volt and it would reach this quicker ( lower in the rpm range) with the use of the increased voltage at idle.
I have used this as a base on Hondas.

Paw Paw
Digger29
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Digger29 8/22/2017 9:27am
8/22/2017 9:27am
I've adjusted the TPS on a 16 and a 17 350SXF and they both responded very well at .62. Both have full FMF systems and both have the screen-less filter cage.
captmoto
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captmoto 8/22/2017 10:54am
8/22/2017 10:54am
Digger29 wrote:
I've adjusted the TPS on a 16 and a 17 350SXF and they both responded very well at .62. Both have full FMF systems and both...
I've adjusted the TPS on a 16 and a 17 350SXF and they both responded very well at .62. Both have full FMF systems and both have the screen-less filter cage.
I was surprised at the effect of the screen-less filter cage on my FC450. It pulled way better in the mid range. It was a significant difference going up Mt. St. Helen for me.
jvail134
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jvail134 8/22/2017 4:32pm
8/22/2017 4:32pm
Paw Paw wrote:
Now understand I don't have the actual numbers from the factory, nor do I profess to be an expert, but... As I understand it the normal...
Now understand I don't have the actual numbers from the factory, nor do I profess to be an expert, but...

As I understand it the normal reading would be at about .5 volt dc at idle throttle setting, but if it were increased to
about .75 volt or even 1 volt it would make the fuel mix richer at idle and all the way up the rpm range until you have a full 5 volts.
At wide open throttle it would be 5 volt and it would reach this quicker ( lower in the rpm range) with the use of the increased voltage at idle.
I have used this as a base on Hondas.

Paw Paw
I believe you are correct. I am looking for the stock setting as I don't have any modifications on mine.

The Shop

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jvail134
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jvail134 8/22/2017 4:34pm
8/22/2017 4:34pm
Digger29 wrote:
I've adjusted the TPS on a 16 and a 17 350SXF and they both responded very well at .62. Both have full FMF systems and both...
I've adjusted the TPS on a 16 and a 17 350SXF and they both responded very well at .62. Both have full FMF systems and both have the screen-less filter cage.
Ok, thank you. I wonder what your idle is set at as depending on how high it is the voltage would be higher. I also do not have any modifications on it for better breathing.....
Monk
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Monk 8/23/2017 7:27pm
8/23/2017 7:27pm Edited Date/Time 8/23/2017 7:28pm
There is no 'accurate' stock settings as there will be variances from the factory. The idle alone changes the TPS as the idle is just tension on the throttle wheel. That being said, I've seen them range from .49v to .52v stock with about a 1700rpm idle...
Digger29
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Digger29 8/24/2017 2:59pm
8/24/2017 2:59pm
Monk wrote:
There is no 'accurate' stock settings as there will be variances from the factory. The idle alone changes the TPS as the idle is just tension...
There is no 'accurate' stock settings as there will be variances from the factory. The idle alone changes the TPS as the idle is just tension on the throttle wheel. That being said, I've seen them range from .49v to .52v stock with about a 1700rpm idle...
Both the 16 and 17 350SXF's that I adjusted where at .49 stock.
ewhite252
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ewhite252 12/29/2020 7:41pm
12/29/2020 7:41pm
Monk wrote:
There is no 'accurate' stock settings as there will be variances from the factory. The idle alone changes the TPS as the idle is just tension...
There is no 'accurate' stock settings as there will be variances from the factory. The idle alone changes the TPS as the idle is just tension on the throttle wheel. That being said, I've seen them range from .49v to .52v stock with about a 1700rpm idle...
Digger29 wrote:
Both the 16 and 17 350SXF's that I adjusted where at .49 stock.
So what your saying is that with the idle screw backed all the way out it was set between .49-.62? That is high according to Charles Marchant that I know who works for the factory ktm gncc team. According to him the base setting is .395-.400. He said to set it with the idle screw backed out completely and then adjust your throttle once you set your tps. I run my 2017 450 at .410. When I checked it the setting from the factory was .423 and it was super rich. I’ve got it running near perfect now. It was too lean at .395 which I tried when I reset it the first time. With that being said I also have a high compression piston and full akrapovic exhaust along with head porting and a custom tune from twisted development. The best idle setting I found was at .550 which sets the idle at around 1500 Rpms

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