PCV Tune With M4 GP Slip on - ZX6R Forum
 
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post #1 of 7 Old 07-19-2019, 07:43 AM Thread Starter
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PCV Tune With M4 GP Slip on

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 thatís on his bike now is just so much different than the off the shelf map from Dyno JetÖ.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 #ís 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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Last edited by rogal88; 07-19-2019 at 07:47 AM.
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post #2 of 7 Old 07-19-2019, 06:29 PM
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If the dyno pulls were done with an exhaust gas analyzer monitoring the emissions, it shouldn't be lean. First and most important question to ask.

"Basic stuff fellas. Use your head for something other than to break your next fall."
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post #3 of 7 Old 07-20-2019, 09:18 AM Thread Starter
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If the dyno pulls were done with an exhaust gas analyzer monitoring the emissions, it shouldn't be lean. First and most important question to ask.
Ya he said there was one in the exhaust and the air to fuel ratio was flat 13.5 on the dyno pull. But that was at wot, not cruising throttle. I'm sure his guy knew what he was doing, he's just a bit curious is all
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post #4 of 7 Old 07-20-2019, 09:53 AM
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Let's wait on RiversZZR to comment. He has and operates a dyno. I'd expect he knows what sort of numbers you should see.

"Basic stuff fellas. Use your head for something other than to break your next fall."
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post #5 of 7 Old 07-21-2019, 09:01 AM
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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?
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post #6 of 7 Old 07-22-2019, 06:28 AM Thread Starter
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Originally Posted by joshgutty View Post
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?
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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post #7 of 7 Old 07-23-2019, 09:30 AM
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Originally Posted by rogal88 View Post
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.
I did exactly as you said and increased the idle rpm with the little turn knob on the left side of the bike by the oil filter. That fixed my issue now its idling at about the same 1400 rpm's and its perfect! Thank you for the reply!
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