Hi all,
Just a note that MegaSquirt should NOT have capacitors installed on the sensor/controller side of the EGO sensing circuit.
On a V3 main board, the resistors R10, R11, and C10 capacitor form the EGO input circuit (R1, R29, and C2 on a V2.2 main board). C10 is on the processor side of the circuit, and is fine. However, some people are apparently adding capacitors to the sensor side of R10/R11. This causes problems with some wide-band controller boards, including the Innovate LC-1. So don't do it.
As well, please be sure to ground your wide band controller to the same point as MegaSquirt, this is an important point if you want you wide-band to read accurately and reliably.
If your MegaSquirt is grounded properly, but the wide band controller is grounded to the cigatette lighter or dash, you might see up to a few volts offset, making the inidcated AFR completely wrong.
Lance.
Capacitor on EGO input
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
I am goin to be using MSnS-E with a V3 board and I have a PLX m300 wideband, the manual that came with my wideband says to use supplied capacitors to filter out interferance noise from outside sources like the radio and ignition systems on the analog output wire. What your saying is that I do not need to add this capacitor because MS already has compincated for this or should I install it anyways??
Hopfully my project will run one day 
Toyota Supra:
- 1jz
- single turbo td-07 upgrade
- attempting to make it run with stock coilpacks and sensors!
- wish me luck!
Toyota Supra:
- 1jz
- single turbo td-07 upgrade
- attempting to make it run with stock coilpacks and sensors!
- wish me luck!
-
Bernard Fife
- Super Squirter
- Posts: 1009
- Joined: Mon Feb 16, 2004 3:15 pm
El Nagro,
If the wideband controller manufacturer says to add it, then you can do it.
The concern is not from MegaSquirt's point of view (the capacitor won't damage it at all), instead it is the wideband controller that can be damaged by such a capacitor - and we have been advised by Innovate that such a capacitor should not be used with their products (LM1, LC1, etc.) under any circumstance.
Apparently PLX recommends such a capacitor, so you can install it.
Lance.
If the wideband controller manufacturer says to add it, then you can do it.
The concern is not from MegaSquirt's point of view (the capacitor won't damage it at all), instead it is the wideband controller that can be damaged by such a capacitor - and we have been advised by Innovate that such a capacitor should not be used with their products (LM1, LC1, etc.) under any circumstance.
Apparently PLX recommends such a capacitor, so you can install it.
Lance.