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Old 11-22-2012, 10:14 PM   #1
-Chris-
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What target A/F ratio for PCV w/ Autotuner?

Hi Guys,

I have a question for the Guru's out there, I have a K9 750 with a full exhaust and bmc filter and PCV.

I have had the bike properly tuned on the dyno and have recently purchased an autotuner for the PCV. My question is, what target A/F ratio is recommended?

I have tried to contact the tuner who did my current tune however he isn't in today (off running a stall at the motorbike expo here this weekend). I was going to try to get this installed this weekend.

I have tried to search but I couldn't find the answer I was looking for. If somone could point me in the right direction I'd really appreciate it.

-Chris
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Old 11-22-2012, 11:23 PM   #2
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Re: What target A/F ratio for PCV w/ Autotuner?

Depends what you are going for I tuned mine differently depending where I am at in the tables in spot I went as rich as 12.7 and also leaned it out in spots to around 13.7

I normally shoot for 13.2 to 13.7 to play it safe
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Old 11-23-2012, 12:24 AM   #3
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Re: What target A/F ratio for PCV w/ Autotuner?

12.9 to 13.2 works great for me and is still safe
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Old 11-23-2012, 04:56 AM   #4
DemonRR
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Re: What target A/F ratio for PCV w/ Autotuner?

13.1 here
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Old 11-23-2012, 12:19 PM   #5
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Re: What target A/F ratio for PCV w/ Autotuner?

13.0 - 13.4 is where I tune most of them at the shop. Maybe even go fatter at low RPM's if your in a hot climate and it helps keep them from over heating at stop lights and low rpm runs in traffic.
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Old 11-23-2012, 06:13 PM   #6
-Chris-
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Re: What target A/F ratio for PCV w/ Autotuner?

Thank you all for replying. I think I'll start around 13.2 and go from there.
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Old 11-26-2012, 03:27 PM   #7
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Re: What target A/F ratio for PCV w/ Autotuner?

Quote:
Originally Posted by Trackstar View Post
13.0 - 13.4 is where I tune most of them at the shop. Maybe even go fatter at low RPM's if your in a hot climate and it helps keep them from over heating at stop lights and low rpm runs in traffic.
13-13.2 roughly.
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Old 11-26-2012, 03:33 PM   #8
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Re: What target A/F ratio for PCV w/ Autotuner?

13.5~13.3 on the lower end..13.1 on the higher end of things. worked great
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Old 11-26-2012, 07:39 PM   #9
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Re: What target A/F ratio for PCV w/ Autotuner?

13.4 for a 1000 - 1500 rpms before your bike normally starts building big power will smooth the delivery and make some extra mid range gofast. Then drop it back down to 13.0 / 13.2 where it starts normally building power. I'll go 13.5 on the top end of things on a track bike for some extra power on top.
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