Catted down pipes and Check engine light

SexyAvalancheGrey · Oct 4, 2018

Thats your penalty for being some liberal *******..........lmao

Nick@Apollo-Optics · Oct 4, 2018

SilverBolt said:
Technically that is a 50-state federal emissions law. Cats cannot be removed or replaced for 5yr/50k miles unless found to be defective.

Looks like I learned something new today. I guess the presence of CARB just makes that more heavily enforced in the state of California.

Booth9999 · Oct 14, 2018

Nick@Apollo-Optics said:
SPD Adapters and SPD Downpipes = NO CEL
SPD Adapters and Kooks Downpipes = CEL; Add O2 Extenders
Stock Adapters and Kooks Downpipes = NO CEL
Stainless Works Downpipes = CEL; Add O2 Extenders

Hope this helps!

If you'd like to explore your options, please let us know if we can help!

Hey Nick, so if I’m correct “if” I were to swap out my down pipes with some SPD down pipes I need to put on the spd turbo adaptors and not the o2 extenders or would it make sense to just put them on while the down pipes are off the truck? Is there a negative to adding the o2 extenders? Please message me an estimate of the cost you recommend, thanks in advance!

Nick@Apollo-Optics · Oct 15, 2018

Booth9999 said:
Hey Nick, so if I’m correct “if” I were to swap out my down pipes with some SPD down pipes I need to put on the spd turbo adaptors and not the o2 extenders or would it make sense to just put them on while the down pipes are off the truck? Is there a negative to adding the o2 extenders? Please message me an estimate of the cost you recommend, thanks in advance!

Actually, with the SPD Downpipes and SPD Adapters, you would not need O2 extenders. The High-Flow cats used by SPD do not need the O2 extenders; they read normal.

ruey220 · Sep 14, 2023

Are these cats allowing the cat ready monitors to be set? Im not getting a check engine light but my ready monitors are not setting for smog and my tuner suspects its the cats causing the issue

Booth9999 · Sep 14, 2023

I haven’t had to smog yet. I’m following for more info.

dsg2003mach1 · Sep 14, 2023

there is a VERY specific guide for setting all the monitoring, if you're having trouble getting them to set I would find that and follow it to the T and see what happens. No emissions here so no idea, I just know Im not throwing any lights

Catted down pipes and Check engine light

SexyAvalancheGrey

Full Access Member

Nick@Apollo-Optics

Supporting Vendor

Booth9999

Professional basket weaver level 7

Nick@Apollo-Optics

Supporting Vendor

ruey220

FRF Supporting Member

Booth9999

Professional basket weaver level 7

dsg2003mach1

Full Access Member

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