The final part to our 3 part series, we do a number of performance modifications and then put the CBR650F on the Dyno to see what sort of power we can pump out of it. Music : Absence - About You - • Ascence - About You | ...
Howdy, question regarding the exhaust and tune. I've got a 2014 American model I'm going to be doing a stunt build on and was wondering how the electronics work for changing the exhaust and getting rid of the catalytic converter. On my f4i its just headers with a pipe but what all do I need to change the exhaust? Can I just cut it right before the cat and throw a slip on tip on it with a power commander?
Not sure mate as the American models are already unrestricted, so I couldn’t say. On ours it would cause the motor to run lean but that’s a result of the factory restricted tuning we have, so I’m not sure. Apologies for the late reply also. I never received a notification for this comment
Nice work with the bike I have the same bike in black ..about to get tuned the trumpets you used were did you get that from..details would be so greatfull
@@mitchellwood5229 it took a lot of researching for me to find out that this restriction is only limited to out of u.s. countries. Not sure where everyone is from but with restriction the bike runs about 50hp and removing the restriction puts the bike around 90hp which is how its sold in the US. I didnt realize that some parts of the world had this restriction until I took it apart and saw mine wasn't restricted which makes sense as to why it was so difficult for me to find the product. Honestly it would be easier just to cut the plastic and make it fully open. So far for mine I've added a power commander, k&n air filter and a akroprovic exhaust with baffles removed and I love every bit of that bike now. I still need to get it on a dynotune to fine tune everything and I'll say my gas mileage has only slightly dropped which is expected from giving it more power.
Seeing as you put an aftermarket exhaust after you had the ecu flashed. Did you have to get the ecu flashed again due the change in back pressure between the stock and aftermarket exhaust?
Yes I did. When I had it tuned, my plan was always to put an exhaust on it. What we actually did on the day of tuning (but it wasn’t filmed) is we fitted a borrowed exhaust that the owner of the tubing shop had, and created another tune file with an aftermarket exhaust. The file was then saved, and the bike retuned with the stock exhaust. Fast forward a couple of years when I finally changed the exhaust, I just sent him my ecu and he loaded the other file back onto it
Hey mate how many hp did you gain after the tune? I done mine today and it only gained 76hp some pple tells me should gain around 85hp I told the guy he said it’s all bullshit apparently what you think ? Cheers
Sorry for the late reply mate. All dynos are different. Dynos are a tuning tool so don’t take the numbers as gospel. It’s very not so to see up to a 20% difference from Dyno to Dyno. What were your figures before it was tuned? Look at the percentage of power increase rather then the final figure
No 2 engines are exactly the same. Power commander are good, but they are designed to be all the same. Engines are all slightly different depending on how they are driven / ridden, service history, what type of fuel and oil is used etc. that’s what a custom Dyno tune is the best way to go
I Australia the bike is restricted to 47hp, so to go to full power is a huge difference. I bought mine specifically for the upgrade, cheap power in a very forgiving bike. The 85-90 hp range for a commuting bike is perfect IMO. Plenty of power to get you out of harms way and the gearing is spot on.
Agreed with Ben. When tuned they are a completely different machine. Not the fastest bike by any means, but definitely more then enough to have fun with.
Can't speak for the difference before and after but I have a North American model which makes about ~80hp stock and I average between 45mpg (if I'm riding really hard and/or doing 80mph) and 55-60mpg if I'm just tooling around town commuting. I've seen 63mpg with really light traffic and ~40mph speed limits. I don't know what that equates to in l/100km, but I'm sure there are calculators to find out.
Hey mate. Because I’m Australia this bike, and many other 600-700cc bikes, come restricted for the aus market. It’s so Lester’s can ride them and they can still comply with the power to weight restrictions we have here
