Toyota MR2 Message Board - View Single Post - GZE swap, running rich and problems with idol.

Jackstand Queen · 02-12-2009, 05:17 PM

I am using a 21 year old SC ECU. I have a spare SC ECU as a backup. If I am ever forced to use the spare, at that point, I'll start putting together an EMS. And it must truly be a Standalone.

I wouldn't want to piggy back either ECU . . . simply because of their age. In PC terms, how reliable would a 1987 IBM PC running at 33 hrz be? Would you want to go out a buy a new motherboard, CD burner, case, RAM, etc for it?

I've looked into the Megasquirt pretty deeply. Even followed its evolution to its current model. I've figured I'd have to study everything about it for weeks of full time study, before I'd be ready to start. With a ready to go "off the shelf" EMS, I reckon you could cut the study and preparation time in half or more. But it will still require some deep thinking and careful planning.

Your engines current problems could be the Rising Rate FPR is set too rich, or too much fuel pressure.

Have you pulled the codes off the ECU? Those could help focus your efforts.

I think you're still in the grey area of keeping the ECU or going EMS. If I were in your shoes, I'd resistance and function test every sensor, VSV, device, signal, and output, on the whole car before jumping into an EMS. At least with that behind you, you'd feel more confident about throwing in the EMS.

02-12-2009, 05:17 PM	#13 (permalink)
Jackstand Queen Cage Fighter Join Date: May 2008 Posts: 840 Thanks: 75 Thanked 64 Times in 60 Posts iTrader Rating: (1/100% )	I am using a 21 year old SC ECU. I have a spare SC ECU as a backup. If I am ever forced to use the spare, at that point, I'll start putting together an EMS. And it must truly be a Standalone. I wouldn't want to piggy back either ECU . . . simply because of their age. In PC terms, how reliable would a 1987 IBM PC running at 33 hrz be? Would you want to go out a buy a new motherboard, CD burner, case, RAM, etc for it? I've looked into the Megasquirt pretty deeply. Even followed its evolution to its current model. I've figured I'd have to study everything about it for weeks of full time study, before I'd be ready to start. With a ready to go "off the shelf" EMS, I reckon you could cut the study and preparation time in half or more. But it will still require some deep thinking and careful planning. Your engines current problems could be the Rising Rate FPR is set too rich, or too much fuel pressure. Have you pulled the codes off the ECU? Those could help focus your efforts. I think you're still in the grey area of keeping the ECU or going EMS. If I were in your shoes, I'd resistance and function test every sensor, VSV, device, signal, and output, on the whole car before jumping into an EMS. At least with that behind you, you'd feel more confident about throwing in the EMS.