As per title. Gutted out the primary and secondary cats last week. Got a bit of cash back from the scrap dealers for the guts as well 😁
Car is now pretty fumy and tends to pull fumes in while driving with window down. I might end up welding in some hi flows

But...... It hasn't thrown up a engine check light or anything. From what I've read these things are pretty much guaranteed to throw a code?
Is my F broken?

 

^^^^Wait - It WILL happen.

Lou

 

You should’ve plugged in some conditioners before you get the code. Your emission monitors would be still in “ready” status.
You will get a CEL soon, as the ECU will stop giving the missing cats the benefit of a doubt, after few drive cycles.

 

Ahhh I see. Right, I'll wire in the conditioner this week.

 

how is your butt dyno? feel any difference?

 

Why not just tune it instead of messing with the simulators, which may sometimes not work effectively?

 

+1 - get the tune. Adds some power, eliminates cel..

 

also, your wheels are on the wrong side.

 

Just the fronts. Rears look right.

 

When I had mine done there definitely a difference, went from running 12.55@112 to 12.42@114, up against similar mod isf except he had sikky headers he ran 12.37,

 

Definitely more noise. Can't honestly feel any power increase. I had to get rid of the cats, when they got a good dose of heat they really stunk

 

does the car smell worse or better with the gutted cats? right now i have my cats and when they heat up, the cabin smells sooooo bad, with windows all up.