Any tips for turning these CEL's off? I know in the past I have seen some work-around with resistors and the like. My stock injector harness is still in the engine bay, just not plugged in or used. Same with ignition.
Also, here in Connecticut they do a visual inspection (which means I need to put the CAT back on). How will this effect my MS tune?
Any tips or has anyone passed emissions with a car as modified as mine?
As far getting rid of them, not going to happen unless you satisfy the ecu, plain and simple. Switch back for testing, and go back to MS after you pass, probably the easiest method.
#138160, "RE: Passing Emissions with Megasquirt" In response to Reply # 1 Oct-17-13 06:21 PM by Corbin
Since you are 1996, I expect that they will hook up an OBD2 scanner at the inspection station. I don't think you have a chance of satisfying the stock ECU with out giving it full control over the engine. I've been running MS and switching back to stock to pass emissions for 8 years now. I re-install stock injectors, stock O2 sensors, hotter BKR5E spark plugs, EGR, set to stock fuel pressure, advance exhaust cam, retard intake cam, as well as give the stock ECU control of injectors, ignition, and IAC. I run a cat year round, so that isn't a problem. Since I'm 1995, I have to pass a rolling dyno test. I think if you can pass that, you can pass the OBD2 test. I've failed enough to know exactly what it takes (for my engine anyways). By now, I have set up the MS harness with stock connectors for injector harness, ignition, and IAC so that switching control from stock to MS is "plug and play".
#138347, "RE: Passing Emissions with Megasquirt" In response to Reply # 2
Originally posted by Corbin Since you are 1996, I expect that they will hook up an OBD2 scanner at the inspection station. I don't think you have a chance of satisfying the stock ECU with out giving it full control over the engine. I've been running MS and switching back to stock to pass emissions for 8 years now. I re-install stock injectors, stock O2 sensors, hotter BKR5E spark plugs, EGR, set to stock fuel pressure, advance exhaust cam, retard intake cam, as well as give the stock ECU control of injectors, ignition, and IAC. I run a cat year round, so that isn't a problem. Since I'm 1995, I have to pass a rolling dyno test. I think if you can pass that, you can pass the OBD2 test. I've failed enough to know exactly what it takes (for my engine anyways). By now, I have set up the MS harness with stock connectors for injector harness, ignition, and IAC so that switching control from stock to MS is "plug and play". Corbin '95 ESI-T Now with more power and fewer leaks Humble servant of the Wiki
Thanks for the tips... I know this is a delayed response but the car sat for the winter and I am back at it now...
I left all of the stock EXU plugs in the engine bay in case I needed to switch back... The only one I messed with that will be very difficult to get back to stock plug (I snipped the wires because I only had one plug) is the IAC... Do you think I will need the stock ECU to control it for emissions?
#138348, "RE: Passing Emissions with Megasquirt" In response to Reply # 3
Originally posted by RfOeCnKdOeNr Thanks for the tips... I know this is a delayed response but the car sat for the winter and I am back at it now... I left all of the stock EXU plugs in the engine bay in case I needed to switch back... The only one I messed with that will be very difficult to get back to stock plug (I snipped the wires because I only had one plug) is the IAC... Do you think I will need the stock ECU to control it for emissions? Thanks again.
You should get a code if the IAC is not connected to the stock ECU. It may also throw codes for the engine idling at an RPM other than the stock ECU setpoint. Hit up a junkyard and clip the IAC pigtail off. Worst case, I could sell you one of mine (parting my car out). Being a 1996 car, you should need all codes cleared and have satisfied the majority of non-continuous monitors. You probably need to drive for a week on the stock ECU before going in for testing.