TECH
Tips and tricks on how to increase the performance of your machine.

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This tech feature has been submitted to Zhaust by Arshad Mehter (arshadmehter@hotmail.com)

CAT convertor MOD IMPORTANT!!

  1. If u are running at very high RPMs and want to increase flow at the top end, maybe because of a tall CAM, which needs a good- breathing Exhaust to perform as it should with no loss in its expected power band (N/A car,)..

  2. If u are a Turbo Charged Car then u really don't need to have it in i.e.. the better the flow the better the turbo will perform because of the reduced back flow on to the        turbo impeller. This Back-Pressure causes the impeller not to turn as freely as it should because of the Air friction acting against it. A better exhaust flow from the turbo should also help in the turbo lag, in most cases .ie. The more easily the impeller can spin without trouble ,the faster it can spool up freely and reduce lag.

  3.  Or if  the cat u have is an old one which could make it a very restrictive one if it is clogged up.

  For what ever reasons you have , you need to replace the O2 sensors  into the exhaust. Although you all may have already done this, some of you or most of you may have noticed that the check engine light always stays on (some cars, not all). Well below is a simple solution to stop that light from tripping falsely. You need to know if something else is wrong with the car . If the light keeps burning because of the O2 sensor being relocated, you would never know if something else is is wrong with the car. At least with the following solution you will be more than sure that if the light trips, that it isn't because of a false alarm(O2 Sensor), and it would be legit, so you can get your engine diagnosed accordingly.

Mod to prevent the O2 Sensor from tripping the CE light!

The following only has to be done to the second O2 sensor , which is usually just behind the CAT

 

Parts needed (should be available from Parts Unlimited, in town or TDK supplies in Wildey):     (1) 1-MicroFD Capacitor     (1) 1-MOhm resistor     One Assortment of Heat Shrink Tubing Remove the second oxygen sensor. Sensor will be located just behind catalytic converter. See this wiring diagram to better understand connections. Remove protective sheathing from the oxygen sensor near the middle to expose the four wires (two black, one blue and one white). Cut the blue and white wire. Do not cut the black wires, they will not be modified. Install the 1-MOhm resistor inline on the blue wire. Install the 1-MicroFD capacitor between the white wires and the harness side of the resistor. Seal all connections with heat shrink or tape and reinstall sensor.

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