04YJ-GTO

I have an 04 GTO with LTs and high flow cats. The check engine light keeps coming on b/c of the factory o2 sensors with the high flow cats. How do I solve this problem? They don't make o2 simulators anymore(illegal). Are there performance o2 censors for aftermarket cats? Hopefully someone can help me.

 

cncmasterofor

Need to get her tuned. Predator worked for me. You can go handheld or not.

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2006 A4 Brazen Orange GTO
K&N CAI, 18" Chrome Chip Foose Wheels, Tint 20% and 15%, 40 series deltaflow Flowmasters, JBA headers, Blue Tooth, Predator Tune, Catch can, Hotchkis Sway Bars, Pedders springs, Fosgate amps, DLS 8" subs, 6.5" Kenwoods.

04YJ-GTO

yep, thats what the speed shop told me, just tryen to see if there was another way

Tri-Power

well, you could always make your own 02 sensor sims, there are write-ups floating around on various sites, and i've helped a few of my friends do it for their Jeeps. they aren't too bad.

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1966 GTO bored 389 Tri-Power, Powerglide(#'s Match)

{GTO, Explorer, Galaxie, Glastron, & Yamaha} -Tyler-

Rukee

couldn`t you just drill a hole in end of the new cats and weld in bungs for a O2 sensors?

Chrisco

Most high flow cats have an O2 bung in them. The reason the check engine light is on is because the high flow cat doesn't "filter" as much as the stocker did and therefore the O2 sensor is getting a different reading and setting the check engine light.

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06 Spice Red M6- Kook's 1 3/4 LT's, Spintech catback, K&N Aircharger, Pedders Street II, SLP predator 455 bobcat tune.

Rukee

You would think there would be an O2 sensor made that has the values the computer needs.

Chrisco

I imagine that could be done. Recalibrating one might work. But for the time and effort, it's just better to tune it out.

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06 Spice Red M6- Kook's 1 3/4 LT's, Spintech catback, K&N Aircharger, Pedders Street II, SLP predator 455 bobcat tune.

Rukee

If a guy knew the values they send for all the O2 sensors made, then you could just pick the one with the right values. O2 sensor DATA base is what we need.

04YJ-GTO

If I have to go to a speed shop and have her tuned for that, I'm just gonna wait and buy a cam, maybe even a set of heads too