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  1. #1
    Ultra250XRider's Avatar
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    Question Performance Chip?

    I was just on eBay and came across this item:

    http://cgi.ebay.com/ebaymotors/D-BOOST-PERFORMANCE-CHIP-KAWASAKI-STX-15F-ULTRA-LX-250X_W0QQcmdZViewItemQQcategoryZ124114QQihZ002QQit emZ120249115579QQrdZ1QQsspagenameZWDVW

    Looks like a BS item to me, but has anyone seen or tried anything like this?


  2. #2
    That is a BS item right there! Stay away!

  3. #3
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    Has anyone tried it? I am guessing its like a resistor we used to put on Ultra 150's to fool the ECU in to thinking it is running cooler than it is, thus adding more fuel. I know when we did it to the 150's it helped a lot on bottom end..........

  4. #4
    Fat Man, Little Boat Region8Ultra250X's Avatar
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    Quote Originally Posted by Ultra250 Tn View Post
    Has anyone tried it? I am guessing its like a resistor we used to put on Ultra 150's to fool the ECU in to thinking it is running cooler than it is, thus adding more fuel. I know when we did it to the 150's it helped a lot on bottom end..........
    thats a $10K risk i am not willing to take right now.


    i am already on motor two and not willing to go to motor three for a $36 part

  5. #5
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    Same discussion we had on the Polaris Side....... Not on my motor.

  6. #6
    Dubz1's Avatar
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    Quote Originally Posted by Keddano View Post
    Same discussion we had on the Polaris Side....... Not on my motor.
    Put it on Pirates ski...

  7. #7
    wolftrader's Avatar
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    ebay

    Hey guys, I'm not saying I'd put it on my ski, but..... the guy has a good rating in the UK and there are positive comments from those using his "+25hp" devices on the numerous products he sells them for.

  8. #8
    Beagleman62's Avatar
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    Do you get a free set of Ginzu knives when you place
    the order

  9. #9
    kman's Avatar
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    Since the only input to this device is the IAT and there are no outputs (other than the 1 signal to the ECU), then the only thing this does is change the reading the computer gets from the IAT (intake air temperature sensor). The same thing can be done with a simple variable resistor or a fixed resistor (if you didn't want to adjust it). All this will do is trick the computer into thinking the intake temperature is lower/higher than it actually is which will make the mixture slightly richer/leaner. Don't waste your money. If you really feel you need to make the mixture richer/leaner then just buy a resistor. Just remember you risk damaging the engine.

  10. #10

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    Quote Originally Posted by kman View Post
    Since the only input to this device is the IAT and there are no outputs (other than the 1 signal to the ECU), then the only thing this does is change the reading the computer gets from the IAT (intake air temperature sensor). The same thing can be done with a simple variable resistor or a fixed resistor (if you didn't want to adjust it). All this will do is trick the computer into thinking the intake temperature is lower/higher than it actually is which will make the mixture slightly richer/leaner. Don't waste your money. If you really feel you need to make the mixture richer/leaner then just buy a resistor. Just remember you risk damaging the engine.
    I agree just get the resistor. It appears the timing is so conservative I would upgrade the intercooler and be done with it.

    If you have the manual it gives the range of resistance for the IAT.

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