458 How to avoid a CEL with S-Line Exhaust and Cat Delete straight pipes on a 458

Some folks on the 360/430 forum have had success with these...

http://www.bigdaddiesgarage.com/?gclid=Cj0KCQiAy4eNBhCaARIsAFDVtI3FSf-pBPzoSpKyw0Qmo38p2htvq6Tn5ObhULDOokHHMl8uWWZvkJMaAlFmEALw_wcB

OTOH, that would be an expensive and time consuming exhaust install only to find they don't work either. Search the 360/430 forum for the threads

 

Sorry to say, that the easiest way is to leave it alone and be happy. The grief that someone can get from trouble shooting a gremlin can be very taxing and I myself, choose the other path.

 

Deleting the cat's and associated codes via the ecu is the fastest and simplest solution. Not to mention it can all be done via obd2, no need to remove or bench ecms

 

Sounds like whomever tuned out there cats didnt know what they were doing. If you ever need it done without limp mode and cel just shoot me a msg

 

Deleting the cats equals failing the emissions tests?

 

OP I'm not sure where you're located, but if you're in the US keep in mind that some states require an OBD connection for emissions testings and turning a CEL off can often be caught and cause a failure.

 

Lucky you! I'm jealous!

 

Love to know how mine is setup . (I didn't do it ) but it has a cat delete, kline exhaust no cel and runs like a scalded monkey. The only setup I would EVER use for sound and performance !!

 

I had IPE cat deletes and IPE exhaust and never got CEL..running 3 years on the car now. But I heard it can trigger CEL on some cars, its just lucky or not. Ever since then, I've just left it alone. Pass smog even via OBD2.

 

I've tried the O2 extenders and mini-cats on both my F430 and 458, they did not work for me. They took care of the P0420 Cat efficiency errors, but then I got different DTC codes - P0134, P0140, P0160, Oxygen Sensor Circuit No Activity Detected. So that's a no go.

Generally speaking, the only solution I've found that works all the time is getting a tune that will change the readiness monitors to ignore the rear O2 readings. Most reputable tuners can do this no problem. Plus you can get some more power out of the car and take advantage of your free flowing exhaust better.

Of note, depending on your location, you may still even pass emissions testing with a tune if they do it properly. You want the readiness monitor to say "Not Available" instead of "Not Ready" or "Missing".

 

Quick question on a related topic for those reading this thread. I need to remove the O2 extenders on the Kline exhaust on my 488 for the reason above. Can I get sufficient access from underneath by removing the diffuser, or is access better with wheels and wheel arch liners off? Anyone happen to know?

 

If my memory serves me well, going in through the wheel liners is easier.

 

Can anyone recommend which tune to go with specifically 458 with cat deletes?

 

Get a Capristo OBD Wizard.

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How about just try the muffler by itself first . There are alot of exhausts that will make this thing sound awesome without removing the cats.

 

Cats do make a huge difference. But frankly some of the new big 200 cell cars flow a ton and are even Euro 6 compliant. I believe that Fabspeed sells them.

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I tried the O2 spacers with mini cats in, didnt work for me, CEL after 12 miles.

The Capristo OBD Wizard is what I switched to, works perfectly.