Aftermarket headers and Check Engine Light

No man, don't go to the dark side!

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I have the Capisto manifolds on mine, it can throw a code but it is a rare thing. Best to let the engine warm up well before setting off as the lamda sensors get hot and you dont get part burnt fuel on then, setting off the codes
Works pretty well for me- never get codes after it gets hot or on a high speed run.

 

PM sent.

 

No light on my TS headers. Strange how some with headers costing 2-3x more throw codes.

 

Bought a FABSPEED Sports Headers then a week after installation check engine light came on. Installed 02 Sensor then it went away

 

Most of the time the CEL will be on, I used mini cat spacers and that solved the issue, also the 360 (I assume the 430 is similar) has 6 cats, two of them inside the headers and two more pairs in the main cats, the 02 sensors are located before the last pair and biggest catalytic component (one per side obviously), when I had replaced my cats with high flow cats the mechanic measured the 02 readings without the mini cats spacers (and the 02 sensors installed AFTER the cat like a Euro version) and he said the readings were pretty low, it didn't throw a CEL, he installed the mini cats spacers just to be safe.
So basically the aftermarket cats perform a better scrubbing function than the first two pairs of cats.



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Gezim, I just shot you over a PM but will explain here as well! It's honestly a 50/50 shot with these cars that they will throw a CEL. Some guys will swap headers, fit a set of O2 spacers to help minimize the occurrence and never ever see a light. Other cars will throw a light right on start-up. Once you remove those pre-cats in the headers, they become sensitive.
There is always the option of an ECU tune to get rid of the CEL if the spacers don't work and to optimize the power band for the newly added headers - but then you run into emissions issues because it turns the catalyst monitors off.

 

I've installed fabspeed on my 360' recently with extensions my right front o2 is the one that keeps throwing the code so I'm going to change it waiting on parts now


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Capristo headers, cats and muffler on my 16M. No CEL so far.

 

Same exact setup here also. Installed 3 weeks ago. Just threw my first code this weekend after a long hour + drive. Havent pulled the code yet, but will advise as well. Im not too worried. The damn thing threw codes before the headers also! LOL...its a Ferrari.

 

The cel will not come on with headers

 

I have a 360 spider with fabspeed headers and capristo blankets. no CELs. would not look back

 

Aftermarket headers on my 430 and no CEL.

 

2005 F430 with AP headers, no CEL so far and I hope it stays that way.....

 

Aftermarket headers, get some earplugs!!!

 

Plenty would disagree, including me.
O2 extenders fixed mine.

 

F430 with Capristo headers installed about 5 years ago ... no CELs ... no extenders.

Hope I haven't jinxed myself!

 

I have headers and 02 extenders didn't help. I get a CEL on every drive, but only if I shift at redline.

 

Just to add one more data point, added Fabsoeed headers and sport cats, got the 0420/0430 codes every drive.

Went back and added the O2 extenders, haven't seen one since.