Right i hope someone can answer this question for me. I installed hks uppipe and invidia downpipe on my 03 wrx, after about 1000 k i got a CEL. So i did the resistor fix in the EGT plug and reset the ECU. Everthing worked well for a few hundred miles, And then the CEL came on again so i checked the plug, the resistor was still in it?
My idea was maybe i should have put some insulating tape around the plug as heat from the Engine could be affecting it? Well it worked just like before for a few hundred and the same has happened again. Has anybody got any ideas? could it be the downpipe?, is this the problem? and if it is how do i fix it?

 

Which resistor did you use? Don't you need one for the DP and the uppipe? The uppipe uses a 2.2K ohm at 0.5watts. Use some dielectric grease for a, corrossion-free connection and put it in FAR, nice and secure. Then tap over.

jason

 

maybe get a cel fix for the dp?

 

If you installed a catless downpipe and didn't also install a fix for that it will cause a P0420 catalyst inefficiency CEL.
To be sure you should get the car scanned and the code read, before just resetting the ECU again. In CA you can't go to Autozone for a free scan as you can in other states, so ask in your local forum for help from someone with a scanner.

 

What type of CEL fix can i use for the downpipe?

 

Gruppe S sells the cel fix for the downpipe, or you can make your own mechanical fix or buy one off of someone here on the board. I bought mine off of WRXncrew, pm him and he can hook you up. Basically you get a CEL light on the downpipe because the exhaust gases are hotter than what the sensor would normally read. So this mechanical fix, it shields the o2 sensor from the heat but the sensor will still work properly. I personally prefer this method to cutting wires.

Raymond

 

Oh and one more thing, if you get the electronic CEL fix make sure you get the one that matches the year of your car.

 

Hey thanks dude, oh and one more thing what does evryone think of cobb stage 2? i thinking of doing that in the next couple of weeks

 

the cobb reflash is well worth the price...

if you have 555 bucks just lying around get the cobb accessport.

 

Is it that much? i know the stage 2 is about $395 and the access port what is that? could somone tell, and how will i benefit? all i know is that i'll get about 285hp out of my baby after, Oh and yeah ,i'm gonna do it while my wife goes away on her cruise, cant stand her moaning about the money i'm spending, when she gets back and notices the difference i'll tell i did some cheap mod. :banana: