What year do you have, if its a 10/11 then removing the flies impacts the traction control from what I understand. Going the flash path addresses this issue.
ZG,
Have you looked into having your ECU reflashed with a custom map rather than going the PCV route? This would eliminate the need to pull the flies as how much and at what rpm they open can all be adjusted in the reflash (along with eliminating the 155mph speed limiter if you want). They can even tweak the timing advance in the reflash, though with the variable cam timing that opens up a big can of worms that would require a lot of dyno time to get right.
Here's the current thread on the Guhl Reflash
http://www.zggtr.org/index.php?topic=1585.0
And here's the current thread on the Dynotronics Reflash
http://www.zggtr.org/index.php?topic=1083.0
I pulled my flies at 200 miles and installed the PC V and BMC filter. The first thing I noticed was that the power was available at lower rpms which I greatly appreciated. My PC V promptly failed and I have been riding without it for the last 1,200 miles. I took a 1,000 mile ride last weekend and averaged 44 MPG's hauling ass. I can't say whether the PC V will help MPG's but it makes sense that it will seeing Jamie takes fuel out of the map across the board. But I will take 44 MPG's averaging 80 MPH all day
Bottom line is remove those flies.
Yes MF, I've been reading those threads as well but it seems still a little untested fully and I do worry about warranty issues...
Oops, I have a Two Brothers Carbon Fiber slip on. Looks great, sounds even better. Especially under full throttle
Are you running a full system Mighty or a slip-on?
I've never ridden one with the flies out, so I won't even guess as to how real the improvements are. But one thing that is not in dispute is that any improvement is only in the mid-range. It has no effect on the actual horsepower peak which is at higher rpm. I'm 58 years old and started riding 40 years ago. I actually enjoy shifting gears. Point being that you can get the same performance with or without pulling them if you are just willing on using all six gears when you want more acceleration.Wrong!!!!! I went from 134 peak hp to 150 peak hp AND gained 12% in torque down low. Once you uncork the engine, it feels like 1352cc's should.
08 with 6k when I I first did the filter and 2 bro exhaust...nice little change. Next installed the PCV...Smoothed all the little spots out and a nice little bump in performance. A week latter I took out the flies...THATS WHAT I WAS LOOKING FOR!!! I now had the low end torque of the Goldwing 1800 and the high end HP of a sport bike. Would do it again in a heart beat
Wrong!!!!! I went from 134 peak hp to 150 peak hp AND gained 12% in torque down low. Once you uncork the engine, it feels like 1352cc's should.
Also I gained 3-5 MPG because of the improved torque. No longer have to downshift as often or use more right wrist to go.
Wrong!!!!! I went from 134 peak hp to 150 peak hp AND gained 12% in torque down low. Once you uncork the engine, it feels like 1352cc's should.Fly removal only won't increase HP. The Fuel controller, exhaust and air filter will. The fella you pointed that comment towards was simply commenting on flies out not making more HP.
Also I gained 3-5 MPG because of the improved torque. No longer have to downshift as often or use more right wrist to go.
So I know many of you have pulled your flies, I still have not but am currently only running a slip-on.
I'd like to hear some concrete facts on pro's and con's of doing this...
Does it make more hp? More torque? Less? Smoother? Harsher? (sp?) Only do with full system? Do not do with stock config? MPG? Remap required? etc, etc, etc...
I'd like to hear both sides of the fence on this...
I'm currently considering going to a full system with PCV and filter, I spoke with my shop today and they recommended not pulling the flies, they said doing it wouldn't produce anymore power, but would make it run more "rough/harsh"...
I'm confused.
Thanks in advance! Oh, and yes I already looked through all the threads with the search feature, seems to only be pro's from people that do it (kinda broad statements like "yes, do it", etc), not much from folks saying don't because...
In my experience- removing the 'flies makes more torque (and consequently more HP) at low- to mid- range RPM ranges. It won't do much of anything for top end power. There is a significant gain in power and 'drivability' at lower RPM though and removing the 'flies is worth doing for that reason IMO. There will also be a significant amount of intake noise after the 'flies are removed, this is not really a problem but was quite noticeable at least on my bike.
The throttle does not get any more sensitive but there is more throttle response available. In other words, a small amount of throttle makes the same difference with 'flies or without 'flies but a larger turn of the throttle is not moderated by the secondary 'flies once they are removed so more <potential> power is available. It may take a more sensitive hand on the throttle to manage it once the 'flies are removed but recklessly grabbing a big handful of throttle is always a bad idea on a bike this big anyway. If one had been a big rough with the throttle in the first place and the secondary 'flies had been modulating the power for that person, then removing them might make the bike appear more sensitive to throttle inputs.
I personally don't look at removing the 'flies as a performance mod. as much as simply removing the factory supplied 'governor'. The bike acts exactly like a 1400 cc motorcycle should once the 'flies are removed; it is not a beast or unmanageable or anything similar but again, it is a big bike with a big, relatively powerful engine.
There are some folks reporting that they are successfully running the bike without 'flies and without any type of fuel management system, such as a Power Commander. I believe the bike will tend to run lean at low RPM and large throttle openings because the F.I. system is metering fuel based on an air management system that has been removed and the system has no way to compensate. My suggestion would be to use a Power Commander or similar to remap the fuel delivery if the 'flies are removed.
Brian
In my experience- removing the 'flies makes more torque (and consequently more HP) at low- to mid- range RPM ranges. It won't do much of anything for top end power. There is a significant gain in power and 'drivability' at lower RPM though and removing the 'flies is worth doing for that reason IMO. There will also be a significant amount of intake noise after the 'flies are removed, this is not really a problem but was quite noticeable at least on my bike.
The throttle does not get any more sensitive but there is more throttle response available. In other words, a small amount of throttle makes the same difference with 'flies or without 'flies but a larger turn of the throttle is not moderated by the secondary 'flies once they are removed so more <potential> power is available. It may take a more sensitive hand on the throttle to manage it once the 'flies are removed but recklessly grabbing a big handful of throttle is always a bad idea on a bike this big anyway. If one had been a big rough with the throttle in the first place and the secondary 'flies had been modulating the power for that person, then removing them might make the bike appear more sensitive to throttle inputs.
I personally don't look at removing the 'flies as a performance mod. as much as simply removing the factory supplied 'governor'. The bike acts exactly like a 1400 cc motorcycle should once the 'flies are removed; it is not a beast or unmanageable or anything similar but again, it is a big bike with a big, relatively powerful engine.
There are some folks reporting that they are successfully running the bike without 'flies and without any type of fuel management system, such as a Power Commander. I believe the bike will tend to run lean at low RPM and large throttle openings because the F.I. system is metering fuel based on an air management system that has been removed and the system has no way to compensate. My suggestion would be to use a Power Commander or similar to remap the fuel delivery if the 'flies are removed.
Brian