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Question In-Duct Question

I want to buy a bigger induct, but I don't know which one to get. I looked at SJBMW.com and they have a thing called the super-duct, and a powerflow filter that looks pretty nice. There's also the In-Duct from boxer-performance. Any suggestions?
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Old 01-29-2002, 07:01 AM
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Well, I have a duct from Boxer-Performance and am *very* pleased with it. So I would go that route.

imho
Old 01-29-2002, 07:23 AM
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Never Mind

After reading this story from someone trying to do business with SJBMW, I think I'll order an In-Duct from boxer-performacne -

http://bmwusacycles.com/board/viewMessage?id=5025&p=0
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Old 01-29-2002, 07:23 AM
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I have the induct and really like it.

As far as sjbmw goes, I've had mixed results. Quite a bit of things late, and not quite as advertised or promised when I was using them for a few old airhead about 2 yrs ago. Not just once either. Otoh, sometimes they were just fine, both on the phone, and in terms of delivery. If you really like their product better, then I wouldn't let the service influence me unduly.

The InDuct _is_ nice and light, and adds just a bit of induction sound up front. Enjoyable, but still gentlemanly

I like mine a lot.

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roger
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Old 01-29-2002, 03:15 PM
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Well, just to counterpoint the induct crowd, I'm very happy with the SJ kit. Nice K&N action, too.

jeff
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Old 01-29-2002, 04:34 PM
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718Rider,

I get requests via email about this quite often.

The SJBMW Superduct is an excellent product and emulates only what the rear part of the BP InDuct does by removing the restriction in the original part.

The BP InDuct also replaces the front section and the design of this part helps improve flow and pressure into the airbox.

I generally recommend using the BP InDuct along with the SJ Powerfilter to get the optimal benefit for the money spent.

I have not personally done back to back testing for these products but have received an email regarding this topic. The author now uses the BP InDuct along with the SJ Powerfilter.

Only you can make the final decision and whichever way, I hope you enjoy the benefits.
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Last edited by lennie; 01-29-2002 at 09:10 PM..
Old 01-29-2002, 05:31 PM
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Like a lot of things, you can over analyse your choice on this one .There is a school of thought that says , you will see no measurable improvement on a Dyno whatever you do with the air intake side of the equation.

If you accept that real world moving along at ever increasing rate of speed is in actuall fact proportionate to a positive ram air effect on performance ,then you are hooked on wanting to improve same said .

If so why only go half way ?. ie SJBMW . You are venturing into real subjective 'seat of the pants' hard to quantify difference type territory here , let me warn you .
Why not go the whole Hog ie Boxer Performance Induct .The thing is well finished , light and made of Carbon fibre . What more can I say .

IMO my bike goes faster ,and sounds better .

Mick.
Old 01-30-2002, 01:41 AM
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Greetings,
Add my vote to the CF "in-duct". It was a snap to install. It's a pleasure to have quality aftermarket parts, rather than more plastic. Gives a nice intake sound too.
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Old 01-31-2002, 06:20 AM
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Go for the one that suits you,either price or availability,performance wise there's nothing between them,there are at least two guys here in the UK that are more than happy with the SJ duct and the way it performs,but it is exspensive and a hassle to get hold of,i have to say it was my prefered choice but i bought Lennies because it was easier to obtain.
Old 01-31-2002, 12:00 PM
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Chris,

According to a board member, 5 to 6 bike lengths with 5th and sixth gear roll ons between 60 and 90mph, would not be the same performance. Prior to changing from the SJ Superduct to the InDuct these bikes were set up the same.

But like you say it will be his money and choice in the end. Either way he will gain better breathing performance.

InDuct by the way is the product name for my intake duct.
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Old 02-01-2002, 10:10 PM
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Old 02-01-2002, 10:10 PM
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