Catalyst Under Threshold

[Pontiac Warrior]

I am having an issue with a code being triggered in my car and it causing the check engine light to come on. I know my catalytic converter isd good since it is a brand new Magnaflow high flow preformance cat from zzp. The guys at Advanced auto are telling me i may have an exhaust leak? Anyone experinced this and know for sure? Or am I having a problem because of the high flow cat? Any Help would be appreciated thanks guys!!!!

 

[matt5112]

Check for an exhaust leak, you'll be able to hear it.

If there isn't one.

Then its just the cat being a whore.

They tend to do that if your tune is off.

 

[Pontiac Warrior]

I listened for a leak and yea there is one. If the leak being fixed doesnt help Would a tune up help the problem?

 

[matt5112]

a street tune with a wideband would fix it.

Depending on what year your car is, you could run an O2 sim.

Unsure if you have emissions and if this would effect that.

 

[blueguy]

Who has emissions? Delete that EGR and Converter crap and never worry about it again.