Change the TPS voltage or add resistor to Temp Sensor

Blueraven · 07-31-2012, 09:12 PM

Hello all,

According to Gadgets website there are 3 ways to adjust the Air to Fuel ratio.

1. Fuel Processor
2. Add resistor to temp sensor at the Throttle body intake.
3. Change the voltage on the TPS (Throttle Position Sensor)

I don't have the money for the first one but the other 2 are do-able. Any suggestions as to which is better?

Thanks

**cnc** · 07-31-2012, 09:19 PM

Rhys, I think Blowndodge also talked about moving the temp sensor to a cooler location in a thread a while back.

Monkeyman · 07-31-2012, 09:39 PM

Somewhere by the front forks if I remember correctly.

Blueraven · 07-31-2012, 10:46 PM

Oh, so just moving it. Not adding a resistor or changing the TPS voltage?

**cnc** · 07-31-2012, 11:47 PM

Quote:

Originally Posted by Blueraven

Oh, so just moving it. Not adding a resistor or changing the TPS voltage?

Yeah I think the idea was moving it to cooler air would have a similar effect as fooling the temp it was reading with a resistor.

**ringadingh** · 08-01-2012, 12:12 AM

I'd install a fuel processor and leave everything else alone. Adding the resistor wasn't the best way to achieve the end result.

Yellow Jacket · 08-01-2012, 01:45 AM

About four years ago there was a lot of experimenting going on with adding various resisters, changing the setting on the Throttle Position Sensor and moving the air temp sensor.

None of the results were really worth the effort.

Save up your money and get a Doebek TFI.

blowndodge · 08-01-2012, 02:07 AM

After trying a gazillion resistors I added a TFI and moved the air temp sensor behind the chrome fork covers.

The TFI alone I could adjust it to run regular through premium. But, the TFI really couldn't do consistently with the ambient air temp. The PCM takes temp reading from 3 sensors. The air intake (super hot), the water temp sensor and the air pressure.

After moving the air temp sensor (don't forget to plug the hole left behind) I had better results with my settings not having to change them. With the sensor moved behind the forks I could run leaner with the TFI and get consistent mileage results no matter what the outside temps were. Some of you know that in the colder months the mileage would fall off running a TFI tuned for summer riding weather.

Before moving the air temp sensor my TFI was adjusted as follows: 4:15, 6:00, 1:00, 9:00.

Now It's set at 3:45, 3:15, 1:00 and 9:00. I've been running regular in 90 degree weather riding double and I haven't heard it ping yet. In Kanab I got my best mileage ever. I averaged 42 mpg's for the entire trip and I did not drive slow.

View Poll Results: Which one is would you do.
Change the TPS position	2	22.22%
Add resistor to Temp sensor at Throttle body intake	2	22.22%
Do both	0	0%
Don't do either one of them	5	55.56%
Voters: 9. You may not vote on this poll

07-31-2012, 09:12 PM	#1
Blueraven Advanced Member Join Date: Sep 2010 Location: Southern Ontario Posts: 805	Change the TPS voltage or add resistor to Temp Sensor Hello all, According to Gadgets website there are 3 ways to adjust the Air to Fuel ratio. 1. Fuel Processor 2. Add resistor to temp sensor at the Throttle body intake. 3. Change the voltage on the TPS (Throttle Position Sensor) I don't have the money for the first one but the other 2 are do-able. Any suggestions as to which is better? Thanks __________________ Rhys Westmoreland VBA# 01622 (Kawanow) 1969 Suzuki 250 1973 Honda CB750 K3 (Sold Dec 11, 2011) 2003 1500 Nomad FI "REBA" PC III Commander (Died April 2011) PC III Commander (Installed new one April 2016) Vance and Hines, Mustang Seat BadBoy Air Horn Front LED Fog Lights 2011 Maggie Valley,NC 2014 NE US/Eastern Canada Rally,Lincoln NH Login or Register to Remove Ads
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07-31-2012, 09:19 PM	#2
cnc Join Date: May 2009 Location: Montreal QC Posts: 12,034	Rhys, I think Blowndodge also talked about moving the temp sensor to a cooler location in a thread a while back. __________________ Norm Ward 2008 blue / silver nomad kawanow / VBA #01136
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07-31-2012, 09:39 PM	#3
Monkeyman Top Contributor Join Date: Aug 2011 Location: North Wilkesboro, NC Posts: 6,289	Somewhere by the front forks if I remember correctly. __________________ Christopher "Monkeyman" Gray ---------------------------- Widows Sons "Overseers" Patriot Guard Rider USArmy 1987-1990 2021 Can Am Spyder RT 2018 Can Am Spyder RT Limited - SOLD 2014 Nomad - SOLD 2012 Victory Vision - SOLD 2007 Black Nomad - SOLD VMC #9367 VBA #1860
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07-31-2012, 10:46 PM	#4
Blueraven Advanced Member Join Date: Sep 2010 Location: Southern Ontario Posts: 805	Oh, so just moving it. Not adding a resistor or changing the TPS voltage? __________________ Rhys Westmoreland VBA# 01622 (Kawanow) 1969 Suzuki 250 1973 Honda CB750 K3 (Sold Dec 11, 2011) 2003 1500 Nomad FI "REBA" PC III Commander (Died April 2011) PC III Commander (Installed new one April 2016) Vance and Hines, Mustang Seat BadBoy Air Horn Front LED Fog Lights 2011 Maggie Valley,NC 2014 NE US/Eastern Canada Rally,Lincoln NH
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08-01-2012, 12:12 AM	#6
ringadingh Join Date: Aug 2007 Location: Newmarket Ontario Canada Posts: 35,387	I'd install a fuel processor and leave everything else alone. Adding the resistor wasn't the best way to achieve the end result. __________________ 2002 Nomad aka Bountyhunter VBA #27 VROC #18951
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08-01-2012, 01:45 AM	#7
Yellow Jacket Top Contributor Join Date: Nov 2007 Location: Fayetteville, Georgia Posts: 5,792	About four years ago there was a lot of experimenting going on with adding various resisters, changing the setting on the Throttle Position Sensor and moving the air temp sensor. None of the results were really worth the effort. Save up your money and get a Doebek TFI. __________________ Bob KawaNOW/VBA 210 Green/Silver 2006 Patriot Guard Riders 2009
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08-01-2012, 02:07 AM	#8
blowndodge Sr. Contributor Join Date: Jul 2007 Location: Washington City, Utah Posts: 16,474	After trying a gazillion resistors I added a TFI and moved the air temp sensor behind the chrome fork covers. The TFI alone I could adjust it to run regular through premium. But, the TFI really couldn't do consistently with the ambient air temp. The PCM takes temp reading from 3 sensors. The air intake (super hot), the water temp sensor and the air pressure. After moving the air temp sensor (don't forget to plug the hole left behind) I had better results with my settings not having to change them. With the sensor moved behind the forks I could run leaner with the TFI and get consistent mileage results no matter what the outside temps were. Some of you know that in the colder months the mileage would fall off running a TFI tuned for summer riding weather. Before moving the air temp sensor my TFI was adjusted as follows: 4:15, 6:00, 1:00, 9:00. Now It's set at 3:45, 3:15, 1:00 and 9:00. I've been running regular in 90 degree weather riding double and I haven't heard it ping yet. In Kanab I got my best mileage ever. I averaged 42 mpg's for the entire trip and I did not drive slow. __________________ I love my Victory Cross Country Tour 106. Smells like Victory! Ultra's are Limited There are two types of Harley riders. Those that trailer them and those that push them. The most Interesting Man in the World "Find the things in life you don't do well and don't do those things" Member # 0005 Last edited by blowndodge; 08-01-2012 at 02:13 AM.
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