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F4i Exhaust differences

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Old 10-06-2013, 10:10 AM
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Default F4i Exhaust differences

CBR Specific exhaust question

I have a 2003 F4i where no lambda sonde is installed or needed (and tuned with Wiseco fuel controller)

I just bought a 2007 F4i exhaust that has a hole for the lambda sonde. Apart from that they appear close to identical. I wanted a new stainless system using an aftermarket set of motad downpipes and a new stock exhaust. Got a good deal, but now i'm not sure if its useable.

Could I simply plug the lambda sensor hole with this:
and be done with it.

Side note: It will get tuned on a dyno, so i'm not worried about mixture, i'm only worried about possible flow restrictions.
 
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Old 10-06-2013, 02:17 PM
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Yes just plug it, and Im assuming your in europe if you say you bought an 07 f4i exhaust?
 
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Old 10-06-2013, 05:29 PM
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Indeed I am, you can tell because of naming differences or do your 07's sell without exhausts haha. I got it for 25 euro's which would be about 30 dollars, and its absolutely like new. Not a scratch or scuff on it, nothing, happy buyer here.

Cheers for the answer. They had a slight difference around where the sensor mounts, but then i'll just ignore that.
 
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Old 10-06-2013, 05:59 PM
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we don't have 2007 f4i's
 
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Old 10-06-2013, 06:13 PM
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lol yeah no f4i model in 07 in america, just the RR. The plug wont hinder flow at all. Think of it this way, an entire aftermarket slip on exhaust won't change flow enough to need tuning, so this tiny little plug won't even make a dent [pun intended].
 
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Old 10-07-2013, 12:07 AM
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Its what I figured, but I prefer to have some technical backup when i can't do more then figure. Cheers guys, will plug, mount and have tuned on the new headers asap.
 
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