Rich, The GM LS2 Yukon D585 coils with the built in heatsink deliver more energy. The LS2 coils do have a shorter dwell time. I didn’t experience any coil failures after the swap using the LS1 dwell programming. Mark Steitle did the same and had a couple of hundred hours with no failures after he removed the Chinese counterfeits he accidently purchased. Both our installs had the coils mounted in a cool location with plenty of airflow. Bobby From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Thursday, June 25, 2020 1:14 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: EC3 software for Renesis RX-8/LS2 coils fixed and uploaded Been following this thread with some interest in that soon (whatever that means) I will be finishing the install of my renesis with tracy's EC3-A8 and EM3... The wiring is completed as per the diagrams. It seems as there is a difference between the LS-1 coils and the LS-2 coils which necessitates possible change in programming. (It is possible that I misinterpreted the thread as I read it at night in a semi-slumber (stupor) state.) If this is the case, why use the LS-2 coils? or does the problem also existent on the LS-1s. What is the advantage of using the LS-2s over the LS-1s?????? In a message dated 6/17/2020 5:11:20 PM Central Standard Time, flyrotary@lancaironline.net writes: Here it is:
https://drive.google.com/drive/folders/1mVzPOxUwcGUlPizxnRF40nUyKBzfT4DC?usp=sharing
It's EC3closedloop.zip.
You may want to grab it now in case Google decides to close my account :)
You can program the 18F452 chips directly using the EC3CL8.HEX file, or open EC3ClosedLoop.mcp in MPLAB IDE, compile and program. This is for RX-8 (EC3 engine type A8), LS2 coils (D585), large secondary injectors, default is wide band O2 sensor.
Turns out Tracy has never programmed or delivered an EC3 for Renesis with LS2 coils.
Software was missing code to load LS2 coils dwell time.
I added Steve's code for configuration bits so don't have to remember what to set them to when programming.
I set all protection bits to zero to avoid any chip reprogramming troubles, but you could change to: ; CONFIG6L CONFIG WRT0 = ON ; Write Protection bit (Block 0 (000200-001FFFh) write protected) Finn
ENG EQU 0xA8 ;PUT ENGINE TYPE CODE HERE AND CHECK **** ALL **** FLAGS BELOW!!!!!!!!!!!!!!!!!
N109TC EQU 0x00 ;N109TC USES A DIFFERENT assignment of coil drivers CLEAR for ALL except N109TC !!!!! and KERMIT unit 20B controllers
DIAG EQU 0x00 ;DIAG ==1 ALLOWS DIAGNOSTIC USE OF 02H&L
; ***************** CHECK ALL FLAGS BEFORE PROGRAM MING CHIPS !!!!! **************************************************
; *************** DWELL TIME FLAGS *SET ONLY ONE* ***********************************************
RX8COIL EQU 0x00 ;1= 2.6MS DWELL TIME (RX-8 COIL)
RX7COIL EQU 0x00 ;1= 3.5MS DWELL TIME USED (also used for A7 2007 option)
LS1COIL EQU 0x00 ;1= 4.3 MS DWELL USED
HONDACOIL EQU 0x00 ;1= 1.7 MS DWELL (A REALLY TINY COIL)
LS2COIL EQU 0x01 ;1= 4.0 MS DWELL
TURBO EQU 0x00 ;0 = NA, 1 = TURBO VERSION (BIT 0 SET IN ECINFO IF TRUE)
BFACTOR EQU D'20' ;BOOST RETARD FOR IGNITION TIMING lower value = more boost retard (25 IS USED FOR MOST ROTARY 20 on 03-05-09,
LGSEC EQU 0x01 ;0 = PRI & SEC INJECTORS SAME SIZE 1 = LARGER SECONDARY INJECTORS (RENESIS 4 port)
WIDEBAND EQU 0x01 ;0 = NARROWBAND O2 SENSOR IN USE, 1 = WIDEBAND SENSOR IN USE.
TEMPSENSOR EQU 0x00 ;0 = THERMISTOR, 1 = LM34
MAPSENSOR EQU 0x00 ;0 = MPX4250 SENSOR, 1 = MPX4115 (EARLIER VERSION OF EC2 ONLY)
BUSENSOR EQU 0x00 ;0 = NO BACKUP SENSOR, 1 = BACKUP INSTALLED (0xA8,0xA9,AB,AD,B1,B2,B4 0-200 ENGINE ONLY)
BREW EQU 0x00 ;0 = SET TO 1 FOR 3RD GEN 13BREW ENGINES : COMPENSATES FOR 5 DEG EARLIER 3RD GEN TIMING OF CAS
ONEINJ EQU 0x00 ;0 = NORMAL 2 INJECTOR PER ROTOR 1 = 1 INJ PER ROTOR (NOT RECOMMENDED)
CONT EQU 0x00 ;0 = NORMAL 0xA9 ENGINE, 1 = CONTINENTAL/Lyc VARIENT (also sets bu at 18 geg before primary)
EMT EQU 0x00 ;0 = A9 W/ TRIG @ 6 DEG ATDC 1 = TDC @ TOOTH 11 (ELECTROMOTIVE TIMING SPEC) also sets BU at 180 deg
A72007 EQU 0x00 ;0 = PRE 2005 SUBE EJ25 1 = 2005 OR LATER EJ25 W/ RX-8 TYPE CAS
WTF EQU 0x00 ;0 = normal version 1 = BRAT - AKA - WhatTheFuck project version with transmission control functions
TBINJ EQU 0x00 ;1= THROTTLE BODY INJECTION FLAG
LS2_60_2 EQU 0x00 ;1= LS2 ENGINE EQUIPPED W/60-2 TOOTH TRIGGER WHEEL (USE ENG CODE 0xAB)
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