CL based upon RPM (EBL) I just completed a year of tuning my 396SB with cam236/2442 @.05 112 LSA. Seems I was chasing my tail initially. With convectional driving it continually added fuel per dalaogs. It was taking out the fuel I was adding in tables per logs.. I did a vac test at idle and saw 11 in. HG. It appears the overlap allows reversion and that is reason for lean at NB. My WB reports to ECU 14.9-15.5 often.in cruising low load If there was a RPM based value for triggering CL would that be of help.? I idled OL second first half of year and just today moved CL temp to 116C so as to run OL all the time starting this spring.. Thank you for comments. |
Re: CL based upon RPM (EBL) I've run an open loop tune for about a year and a half. A manual transmission is a real pain in traffic if it is not smooth at lower rpm's. My combination wants 13-13.5 AFR at idle and gradually increase to about 14.7 after 1400 rpms. It runs great that way. I would like to have closed loop after 1400 rpms but I don't believe there is any way to do that. I've done WB VE learns and many data logs. The AFR seems to stay consistently where I want it. Hiway mode puts me about 15.5 - 16 AFR. It runs so good in open loop I don't feel the need to change anything. |
Re: CL based upon RPM (EBL)
Originally Posted by Ronny I just completed a year of tuning my 396SB with cam236/2442 @.05 112 LSA. Seems I was chasing my tail initially. With convectional driving it continually added fuel per dalaogs. It was taking out the fuel I was adding in tables per logs.. I did a vac test at idle and saw 11 in. HG. It appears the overlap allows reversion and that is reason for lean at NB. My WB reports to ECU 14.9-15.5 often.in cruising low load... - Rob |
Re: CL based upon RPM (EBL) I turned the NB off. I am using WB reporting data A/F to logs but not using WB in place of NB. Problem is over cept if weather gets real warm. Did logs at 50d F. I have reached a point where readings no longer lean and stable at stoich for most points. Car is a monster. I need drag radials.. Prior issue was lack of fuel( 255L) pump. I upped the FP to53. 36 lb inj's. Seems OK now. Thank you ! |
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