Yet another exhaust question
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Yet another exhaust question - 9/5/2007 11:09:46 AM
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rdsii64
Posts: 77
Joined: 6/9/2007
Status: offline
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Here we go again, another exhaust question. Believe it or not I have already done what homework I could do before posting this question.
Anyway, My question concernes the performance increase over stock with a pair of aftermarket slipones vs. a full 4 into 2 into one system. If a full 4 into 2 into 1 system is with in $100.00 of the pair of slip on cans ( one is $516.00 the other is $496.00 for the pair) which one is the better buy when it comes to how much more performance I will gain over stock. The reason I am asking isn't really the money. The prices are to close to be that concerend. What I am concerned with is getting either system installed.
slip on cans are so easy is isn't worth talking about. doing a full system is a bit more involved considering I don't have the knowledge to rejet the carbs myself.
So far my bike has a stock airbox and I plan to keep it unless it must be changed, and rejet if I get the full system.
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Red 1991 CBR1000F
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RE: Yet another exhaust question - 9/5/2007 1:45:50 PM
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R1000
Posts: 1124
Joined: 1/30/2006
From: Sweden
Status: offline
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Go for the full system if you want the maximum torque and power. DIY re-jetting is quite simple and it is cheap. Let us know when you have got the new system and what it is, and I’ll then propose suggestions for the new jetting,.
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RE: Yet another exhaust question - 9/5/2007 1:57:25 PM
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snotter
Posts: 36
Joined: 10/24/2006
From: Cambridge, UK
Status: offline
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My CBR1000 FL is the same colour as yours! And has a whopping 88k miles on the clock. Anyway, if it helps, I fitted a Remus stainless 4-2-1 system a few years ago. It was a road legal system and the makers claim no rejetting is required. But I took my bike to a dyno shop and had it tested anyway. It was running a bit weak with the new exhaust, but not dangerously so. So I fitted a K&N filter to flow more air and then had the carbs rejetted - up a couple of sizes on the main jets had it running perfectly. Performance increase is not really noticeable, but riding everywhere at 100MPH (!) I get 160 miles before reserve so economy is definitely improved. Maybe it is giving more power too, but without a back to back test it is difficult to know for certain. What I do know is that it shooms up to 140MPH really quickly and that is enough for me and my licence. Previously I had a full race system (straight through can with no baffles) and that gave LOTS more power (and noise) at the top end, but also a great hole between 5000 and 6000RPM - just where you don't need it for the road - between 75 and 90MPH where a lot of time is spent. I guess on a track the engine would always be running faster than 6000RPM so it doesn't matter about the hole. For what it's worth, my recommendation would be to get a road legal (baffled) can and keep your midrange. Fitting is a doddle, except for one thing. With the Remus system you don't keep the metal exhaust covers. So you need to get a small strip of metal for each side of the bike (like a strip of Meccano) to hold the bottom of the fairing where it used to bolt to the silencer cover. The strip goes from the bottom of the fairing (the light grey bit on our bikes) backwards to be fixed under the bolts that hold the main stand on. And that's it. One great benefit is that there is a huge weight saving by losing one of the heavy cans. And I think it looks much better too - the finish on the Remus system is lovely polished stainless. You still have access to the oil filter (not so on some other full systems) and you still get to keep the main stand (ditto). So, advert for Remus over! Good luck with whatever you decide.
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Communities are where it's at
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RE: Yet another exhaust question - 9/6/2007 12:55:30 AM
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Latsky
Posts: 116
Joined: 5/16/2007
Status: offline
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All this talk has got me thinking maybe just to keep my standard pipes!!
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