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.

 

Go for the full system if you want themaximum torqueandpower. DIY re-jetting is quitesimple and it is cheap. Let usknow when you have gotthe new system and what it is, and I’ll then propose suggestions for the new jetting,.

 

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.

 

All this talk has got me thinking maybe just to keep my standard pipes!!

 

Happy w/the pref. of my V&H 4 to1 but it is loud.Stock jetting.Just had it powder coated and it looks nice.

 

I put a set of mivv cans on and the power range is smooth with no flat spots.

[IMG]local://upfiles/10939/52EB9322BEFF4CB09981E20137F99661.jpg[/IMG]

 

All this got me thinking... can my 4-2-1 be done with a stock cbr1000 rr exaust? or it will damage my 1000f 4-2?...

 

Stock 4-2-1 can be done, I've seen advertisements for them. Generally the left pipe iscapped off and a slip on is put on the right side. No idea how efficient it is, what problems it might cause. Maybe someone else on the forum knows.

 

With capping off the left side you have to ensure that you have a full flow through to the can and the carbs will have to be reballanced.

 

But they are so dam ugly[&o]