One of the reasons why I opted for these is because it has a provision for all 4 O2 sensors, an O2 sensor bung fore and aft of the cats on each bank, which will help me avoid the CEL issue. Essentially a plug and play application. I have the CEL right now with the RD Sport headers because the RDs only have a provision for 1 O2 sensor on each bank. That leaves 2 extra O2 sensors unused/unplugged. I didn't get the RD Sport ECU tune to modify the O2 sensor calibrations and avoid the CEL because I already have the Dinan Stage 3 tune. I was going to get the Dinan software patch for the CEL in case of installing headers with 2 less O2 bungs, but at the end, I knew I was going to get Agency headers anyway so I didn't get the patch.
I'm going through all this to ultimately find that right exhaust note I've been wanting for the car. I've already gone through several exhaust set ups (E-race, Meisters, RD Sports) and haven't found quite the sound I want. But I'm closer to my search though. Right now, the car has the RD Sport headers, stock sections 1 & 2 and Dinan cans. I'm really liking the sound but still too wimpy for my taste. So next step is to swap out the headers and see if I'm that closer to the sound I want. Ultimately, I'll put in the Dinan mid pipes, that will help me get the scary roar I want, plus I can modulate it with their optional resonators that come in 3 sizes. Also, right at the location where you can change out the mid pipes, I can also opt to get aftermarket cats in place of the resonators when smog time comes around. This way, I will still have the 4 cats in place, albeit less restrictive, for smogging and swap back the straigh resonator pipes easily without disturbing the rest of the exhaust. All this effort...I hope it pays off.
