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Boss 260 surges after fitting SS inductions T/B 

 

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 Post subject: Boss 260 surges after fitting SS inductions T/B
Posted: Mon Feb 13, 2012 9:27 pm 
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Hi all,
I have fitted a SS inductions T/B to my Boss 260. Whilst idling now, it surges between 600 and 900 rpm. Any ideas or anyone else had this problem. Any advice appreciated.

 

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 Post subject: Re: Boss 260 surges after fitting SS inductions T/B
Posted: Mon Feb 13, 2012 10:24 pm 
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That's because the PCM doesn't know that for the same throttle angle you will have more air entering the engine so, it's confused.
You need to reflash the PCM or, better still, put the stock one back on.
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 Post subject: Re: Boss 260 surges after fitting SS inductions T/B
Posted: Tue Feb 14, 2012 8:03 am 
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Shouldnt it adapt to the new air intake
And also did you accidentally pull off a vacuum line or something while fitting it?
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 Post subject: Re: Boss 260 surges after fitting SS inductions T/B
Posted: Fri Feb 17, 2012 12:21 am 
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Yeah mine used to do it pretty bad. What I done was take the intake pipe off and let it idle for a couple minutes then u have a look at what angle the butterfly is at. Turn off the engine and adjust the screw on the side until the butterfly is at the same position as it was when it idles at normal RPM. Doing that made it run so much better, but when I got it tuned that got rid of it completely

 

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 Post subject: Re: Boss 260 surges after fitting SS inductions T/B
Posted: Sat Feb 18, 2012 11:36 pm 
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Thanks for all the help guys. It's off to the dyno we go!

 

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Catback custom exhaust by Liverpool exhaust. BPT intercooler, Yella Terra blower snout with smaller pulley, id1000 fuel injectors and Walbro fuel pump. Soon to be tuned by Autotech engineering.

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