i have a question my buddy is making me a full exhaust and down pipe for my evo x gsr hes very good with the dsm's and older evos but has never messed with an x he wants to know when putting the stock o2 sensors back in to the piping will thay need to be spaced so thay do not throw a code or will thay throw a code no matter what and i will just have to get the engin light flashed off? or could someone give me some info so i can buy the pipe and get this done thanks

 

I'll say just put the in the same spot as oem should throw a code

 

It will most likely throw a code either way, just plan to have it turned off when getting tuned.

 

o2 simulator -can get one from meganracing or pep boys
http://www.meganracing.com/product_page.asp?catid=22
mechanical o2 fix... they also have a version 2. i know RRE does it for their customers

 

those simulators are half *** just get it turned off when you get it tuned or get a accessport and turn it off yourself

 

ok thanks guys one last question when and if the check engin light comes on will it throw the car into limp mode? see i come from honda and when the check engin light was on it would go in to limp mode and throw more gas then needed into the engin

 

Easiest is to turn it off in the ECU. Spacers on Xs and 4G Eclipses are very hit and miss. What works on one car does not always work on another. We sell spacers for guy that are scared of flashing or for cars that cant turn off the code in the ECU.

I cant imagine someone that has built DSM stuff would be having you ask this question though. Isn't it the same with every car on the planet? If you don't want a CEL light you have one sensor before the cat and one sensor after the cat? And if no cat you need a mechanical fix (spacer of some sort) or turn off the code in the ECU?

Mike W

 

yea he just said hes never done an exhaust on an x and dident know how thay would turn out he said i would probly have to turn it off thro the ecu, the thing i need to get is a Tactrix cable right? and when it throws the light will it send the car into limp mode i know hondas when the check engin comes on it goes into a limp mode and throws a load more gas in the motor, why i have no idea just wouldering if the evos did the same.

 

exhaust is really raspy

 

will a high flow cat help?

 

Will a sensor before and after a HFC still throw a code? Or is it another one of those maybes?

 

Its a maybe. Mine didn't for ~5 months and then came on twice in a week. Its really best to just flash the ECU.

 

I have had a test pipe on my RSX for years with a CEL, the car never went in limp mode.

 

You want to keep the sensors for logging, though?

 

Is that a question?

Logging narrowband O2 is nearly pointless... but you are only disabling the rear sensor and/or the CEL.