Subject	Others on this site are more experienced in tracking AFR
Posted by	Denis on February 10, 2023 at 12:55 PM
	This message has been viewed 193 times.
In Reply To	He supposedly did a tune on his dyno (attached) posted by Agent X on February 09, 2023 at 12:12 PM
Message	than I am, but I agree it is too rich across the range. With an average of 13 PSI & 17 PSI max you should not be falling below 12:1, I would expect an average ratio of 11:1 for something pushing over 22 PSI. Your pressure is peaking at 17 about 4500 RPM and the AFR is following it, then as pressure bleeds off the AFR keeps getting richer for awhile and does not get in back in line with the pressure. I think your cylinders are getting washed by the excess fuel.
Follow Ups	Fuel in oil - Agent X 12:59:54 01/26/23 additional info - Agent X 15:07:38 01/26/23 Fuel pressure regulator bad sucking raw fuel possibly. - mrchips 07:45:02 01/27/23 It was replaced due to age, but no sign of leak - Agent X 08:40:52 01/27/23 Carbon Canister Vac Line? (n/m) - Cjw3 18:48:12 01/26/23 Wouldn't that cause a lean condition? - Agent X 20:36:22 01/26/23 A flooded Carbon Canister will be rich - Cjw3 10:55:52 01/27/23 CC was deleted years ago, but that would make sense (n/m) - Agent X 11:00:49 01/27/23 It sure sounds like... - Denis 19:34:10 01/27/23 I'm afraid it could be the tune, and I can't check it - Agent X 20:23:49 01/27/23 Shoot Seb at SZ an email and see if he has suggestions - Denis 16:34:18 01/28/23 Got response- went to spam folder - Agent X 08:47:46 02/06/23 If your tuner did not account for the 740's properly then - Denis 11:40:57 02/09/23 He supposedly did a tune on his dyno (attached) - Agent X 12:12:01 02/09/23 Others on this site are more experienced in tracking AFR - Denis 12:55:18 02/10/23 If you are at the point you want to try another program - Denis 16:27:39 02/10/23 Re: Fuel in oil - Zxpress 16:49:19 01/29/23 Did an injector pulse test to roughly measure flow - Agent X 14:19:49 02/02/23 What injectors did you install? - Doug71zt(CAN) 09:38:27 01/30/23 Nismo 740cc (new) - Agent X 10:06:59 01/30/23
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