To anyone who has gutted their cat, did it set off the check-engine light? Also, are their any "dummy" O2 sensors for our cars, cause I want to cut my cat off (or gut it) and not set off any codes in my car. Also, does anyone have a high-flow cat, I've heard they don't work that well (no power), but if you have one and noticed a difference tell me.

97 Eclipse GS
- Ebay CAI
- Ebay Dual Tip Muffler
- Ebay Front and Rear Strut Bars
- Energy Suspension Motor Mounts

I don't have a gutted Cat but I do have a Test pipe and no it didn't set any CEL off. If it does on your car for some strange reason you can go to your local radio shack, buy a 1/4 watt 1 megaohm resistor, and place it in line with the black wire. This will eliminate the light. However I and all of my local eclipse friends have never gotten the light.

99GSX Auto 14b@17psi 13.345@102mph

I got the light and fixed it with the resistor.

Works really well.

Chad

MODS:
3" PVC CAI, GST Muffler, Greddy 4-1 Header, AFX UDP, 55 mm bored TB, P&P Intake Manifold, Corbin intake spacer, gutted cat, Apexi S-AFC, KYB AGX Struts, Eibach Prokits, Excel TZ-10 Rims

i have never got a CEL from mi gutted cat

dsm/mitsubishi service manuals https://www.mediafire.com/folder/5k14qlaulb9s1/dsm_mitsubishi

service manuals(my whole collection) https://www.mediafire.com/folder/ac51jwwa3g1n1/automotive_manuals