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gtsr515 · 01-12-2002, 09:20 PM

To answer your question, the 02 sensors are on the H-pipe, yes you should change them after 50,000 miles.

You state you have a Superchip, did you set your base timing to 10 degrees before installation, also low temperature thermostats combined with a chip can cause problems, especially the one with an "octane rod".

The 86 relies heavily on the 02's, MAP, and ACT sensors for control.

Also you state your TPS sensor is set over 1 volt, well, bad news, when the speed density look-up tables see more than 1 volt from the computer thinks your at WOT, adding fuel. Also was your recent tune up done right, crossed wires, etc?

Good luck!

01-12-2002, 09:20 PM	#5
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	To answer your question, the 02 sensors are on the H-pipe, yes you should change them after 50,000 miles. You state you have a Superchip, did you set your base timing to 10 degrees before installation, also low temperature thermostats combined with a chip can cause problems, especially the one with an "octane rod". The 86 relies heavily on the 02's, MAP, and ACT sensors for control. Also you state your TPS sensor is set over 1 volt, well, bad news, when the speed density look-up tables see more than 1 volt from the computer thinks your at WOT, adding fuel. Also was your recent tune up done right, crossed wires, etc? Good luck! __________________ Remember...2nd place is 1st place for losers!