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Discussion Starter #1
I recently installed a booster plug on my FT. I'm happy with it and everything seems to be fine. The throttle seems a little smoother, although I didn't really have a problem with it before. The biggest difference I feel is high rpms at wide open throttle. It seems to have much more power up top with the booster plug.

My question is the intake air temp reading. At 70 degrees ambient temp, the value displayed is around 30 degrees. Does everyone else with a booster plug have that large of a temp difference? I was only expecting a 15-20 degree difference, so I just want to make sure what I'm seeing is normal. I have the temp probe mounted behind the headlight.
 

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I am getting about a 30 degree differential. I also heard that it should be 20 degrees. Like yours, mine seems to work fine and it definitely helped the throttle response for me. I have been meaning to pull out a spark plug to see if there are indications of running to rich but I haven't gotten to it yet.
 

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I read 20°C less the real temperature. You should test it at cold motor, with an external T° gauge.

Inviato dal mio KSMART 5008DX8 utilizzando Tapatalk
 

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Hello

The on-board T° sensor is definitively false too, approx. always 5 or 6° C more than the real T°.
Its location, on the airbox, makes it dependant on the engine T°. I could notice that when riding in town, the T° increases when you don't move and decreases when you get out of town and ride enough long at high speed.

Before installing the Booster Plug, just relocating the T° sensor in a place where it always get fresh air could already modify the ECU behaviour. It seems that this sensor is connected via a 2-wires AMP Superseal plug, it's quite easy to create an extender to locate if under the headlight, for ex.
 

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Discussion Starter #5
I guess I should have specified Fahrenheit for degrees.

I think a 20 degree centigrade difference is about the same as what I have. That would mean at 20 degrees centigrade, the reading in the instrument cluster is displaying 0 degrees. I am measuring ambient temperature with a gauge, not the intake air temperature sensor. All measurements on a cold engine.
 

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Hello

The on-board T° sensor is definitively false too, approx. always 5 or 6° C more than the real T°.
Its location, on the airbox, makes it dependant on the engine T°. I could notice that when riding in town, the T° increases when you don't move and decreases when you get out of town and ride enough long at high speed.

Before installing the Booster Plug, just relocating the T° sensor in a place where it always get fresh air could already modify the ECU behaviour. It seems that this sensor is connected via a 2-wires AMP Superseal plug, it's quite easy to create an extender to locate if under the headlight, for ex.
The busterplug already has a long wire to connect the NTC T° sensor. So, no problem to put it where you want
 

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20c difference here, a smoother throttle and defo more power through out the rev range. Scrambler is now a flying machine (well nearly).
 

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I think that's about right. 20c or 36F difference in temperature. I have boosterplug installed and air temp difference is about 35-36F on any given day.
 

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Discussion Starter #9
Awesome, it seems like it's normal then.

I admit I was skeptical about the booster plug, but it seems to be a good product thus far. For $150, it's probably the best "bang for the buck" modification available for the Scrambler that I have found.

I'd really like to get a wideband O2 sensor hooked up to measure the difference between wide open throttle air/fuel ratio with and without the booster plug. The stock catalytic converter hinders any tailpipe sniffing though.
 

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Hello

The on-board T° sensor is definitively false too, approx. always 5 or 6° C more than the real T°.
Its location, on the airbox, makes it dependant on the engine T°. I could notice that when riding in town, the T° increases when you don't move and decreases when you get out of town and ride enough long at high speed.

Before installing the Booster Plug, just relocating the T° sensor in a place where it always get fresh air could already modify the ECU behaviour. It seems that this sensor is connected via a 2-wires AMP Superseal plug, it's quite easy to create an extender to locate if under the headlight, for ex.
Hello

The on-board T° sensor is definitively false too, approx. always 5 or 6° C more than the real T°.
Its location, on the airbox, makes it dependant on the engine T°. I could notice that when riding in town, the T° increases when you don't move and decreases when you get out of town and ride enough long at high speed.

Before installing the Booster Plug, just relocating the T° sensor in a place where it always get fresh air could already modify the ECU behaviour. It seems that this sensor is connected via a 2-wires AMP Superseal plug, it's quite easy to create an extender to locate if under the headlight, for ex.


hi
vince is this the same connector i need
Have one to sell? Sell it yourself
Details about Genuine AMP 2 Way Pin Superseal Electrical Waterproof Connector - 1.5-2.5mm Wire
 
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