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Downpipes with 100 cell cat arrived today.

454 views 13 replies 8 participants last post by  jdk  
#1 ·
#8 ·
Fiited the new 100 cell cat and downpipes and airbox yesterday removing the original exhaust was a nightmare all the bolts and nuts were badly corroded took and age to get them all off .Fiitred the MST performance airbox , painted the strut brace statin black to match the gt3 engine cover and finally a good wash . In my fustration trying to remove the old downpipes I forgot to take photos of new one installed and the airbox will take next week when I fit the new Raggdoll bov . The exhaust sounds a lot better drove the car 200 miles today 100 of it on motorway no drone just a throaty roar on acceleration . The 100 mile son B roads in sport plus is amazing get a nice intake noise from the new intakes and roar from the exhaust on full acclleration car feels faster less lag not sure if thats my imagination will try and get a few sound videos over the weekend .

Fitted t
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#12 ·
I was just going to ask if you had gotten any CELs since you added the 100 cell CAT. Looks like you've gotten one.

From the internet: Porsche error code P226D, meaning "Particulate Filter Deteriorated/Missing Substrate Bank 1," indicates a problem with your gasoline particulate filter (GPF) where the filter's internal structure is damaged or gone, allowing too much soot or particles to pass through the exhaust system.Symptoms can include a lit check engine light, visible soot from the tailpipe, and potential driveability issues. Diagnosis requires checking exhaust sensors and wiring, and the fix often involves replacing the filter

Because you added a 100 cell CAT the sensor thinks the internals are damaged and allowing too much soot to pass through. I would look for a 90 degree O2 sensor bung which will lessen the amount of pressure or air to reach the O2 sensor. This should trick the system into thinking the CAT is doing its job.

I know others have used 200 cell CATs without setting off the CEL. I guess that may be the threshold for not getting an error.