Toyota MR2 Message Board - View Single Post - 20V MK1 Engine Swap i need help, im about to go insane!!!

mr220v · 04-25-2008, 01:09 PM

Putting an O2 on is one of the last things people do when finishing up a 20v project. Mainly because the exhaust is the last thing to go in.

Code 21 doesn't trip the CEL. It just hurts fuel economy.

IAC will most certainly trip the CEL.

04-25-2008, 01:09 PM	#23 (permalink)
mr220v Beams Owners Group Join Date: Mar 2006 Posts: 2,529 Thanks: 13 Thanked 176 Times in 147 Posts iTrader Rating: (11/100% )	Putting an O2 on is one of the last things people do when finishing up a 20v project. Mainly because the exhaust is the last thing to go in. Code 21 doesn't trip the CEL. It just hurts fuel economy. IAC will most certainly trip the CEL.