How restrictive is the stock exhaust when paired with a big bore kit?

[QuantiQualification]

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[SneakyDingo]

How did you take the footage from the left side of the bike? Also, along the same lines - is there such a thing as a quiet but performant exhaust for this bike?

 

[Backwoods]

The chain is sure jumping, maybe need to check tension?

 

[QuantiQualification]

How did you take the footage from the left side of the bike? Also, along the same lines - is there such a thing as a quiet but performant exhaust for this bike?

I mounted the camera to the front crash bars and also the added rear passenger footrests.

 

[QuantiQualification]

The chain is sure jumping, maybe need to check tension?

I just adjusted tension a day before the filming. It needed some adjustment at that time.

 

[CTExplorer]

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Curious, did you ever get any numbers to reference of what the oil temps ran in stock configuration vs. where it runs now with the BBK and oil cooler?

 

[m in sc]

I mean, it's a great test, but, again, the ecm needs like 40-50 miles to fully adjust. I would have but that many miles on w the stock exhaust put back on then done the test, but thats just me. .02

 

[QuantiQualification]

I mean, it's a great test, but, again, the ecm needs like 40-50 miles to fully adjust. I would have but that many miles on w the stock exhaust put back on then done the test, but thats just me. .02

I did a long freeway test afterwards and posted up those numbers as well on the video. Between riding out to the sound test road, running the top speed test, and the freeway section probably got me close to the 60 mile mark on the stock exhaust. Didn't change too much through that time and the narrowband afr read okay throughout. I think there is just not a whole lot more that can be asked by the stock exhaust even with many more miles as it is definitely a pretty big restriction. As far as max temperature with the BBK and oil cooler with stock exhaust, I hit a little less than 290 degrees F at 80 degrees outside temp. Reference with the Sport exhaust was 304.5 and the same without cooler was 359.9. Did not have the gear to read temps when the bike was stock but one individual who watched the cooler video stated that he has hit the 360 mark stock in the mountains on the hottest of days.

 

[m in sc]

Ok, makes sense then. yeah, that's not surprising either. good job.