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PCV Tune With M4 GP Slip on

2K views 6 replies 3 participants last post by  joshgutty 
#1 · (Edited)
My friend currently got his 2009 zx6r dyno tuned and sent me a screenshot of his map (unfortunately only from 0-7500rpms). I have noticed that his map has a lot of fuel cuts, making it run more lean that it was with the off the shelf map for his bike from Dyno Jet. I took a quick look at the off the shelf Dyno Jet map and a lot of the 0% fuel has been leaned out to -3% fuel in the lower RPM range.
Not sure if the person who tuned his bike knew what he was doing, or is his bike was running so rich, the fuel needed to be cut in the lower rpms.
He said his bike does run much better, and he is getting better fuel economy. But the map that’s on his bike now is just so much different than the off the shelf map from Dyno Jet….super leaned out in certain spots. The thing that concerns me is that alot of the time when riding in town/city you only use 2%-5% of the throttle at 4000-6000 rpms...and its leaned out throughout the majority of that range, where the off the shelf dyno jet map is zero'd out. I'd just hate to see anything happen to his bike...I know running rich is better than lean, but to find the happy medium is what we all want.
What do you guys think? I will ask him for another screenshot of the #’s from 7500rpm and up.
He's not an active member on any forums and asked me if I could ask the zx6r community as neither of us really know too much about tuning bikes.
 

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#5 ·
Im having the same problem with my 09 zx6r, I have the m4 exhaust installed on mine and when im in neutral or 1st gear and i hit the throttle the bike alot of times it will die out on me. Never owned a sports bike before this one so im wondering if I just need a tune? or if this is common with our kinds of bikes? what do you recommend? BTW my bike only has 1700 miles on it so it should already be tuned?
 
#6 ·
I have a 2009 zx6r also and I've never really had the issue your explaining (before/after my tune). The only time I've had that happen to me is when I have intermittent electrical issues (there is something fucky going on within the main harness between the main relay down to where all 3 harnesses turn into 1 big one near gas tank).
This is my buddies bike, as hes not active on any forums and just wanted some insight to see if these numbers made any sense.
What does your bike idle at? I found that increasing my idle to 1400rpm or so made the bike idle a bit smoother. Try that first.
 
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