Hey guys,

 

Couple of questions in regards to cats and mapping etc. At the mo, I have all 3 cats in place, haven't touched them... I'm not going to do go down the decat/sports cat route either. I do have a de-cat up pipe waiting to be fitted and I know the car will need to get remapped once it's fitted so that's sitting in my garage until i can afford to get the car mapped. 

 

1.) Can I replace the cat pipe with a decat pipe (keeping standard up-pipe and downpipe cats in place) without a remap?

 

2.) When i can eventually get the car mapped and decat the up-pipe, so potentially only have the standard down pipe cat... will that be enough to get me through emissions?

 

Ta :D

The downpipe cat is said to be fine, the others help when cold

I'm having the scrubber cat removed soon and I've heard that it should be ok without remapping, I will let you know how I get on and if I get a cel etc

Sent from my iPhone using Tapatalk

So i can pass with just the downpipe cat alone as long as everything is up to temperature?

Pending on what ecu or software you use some offer duel maps so you could always ask the mapper to make one of the maps low boost and emission friendly [emoji6]

Interesting!! Will def be something I ask when I get my car mapped!

 

Savage, do you know anything about Question 1?

I've not researched or had any experience with the 3 cats in newage as I've only ever owned early classics myself .

Early classics only have 1 cat in the downpipe and on my v3 uk I switched that for a cobra sports cat which passed emissions without a remap once hot .

I currently run a decat downpipe but my mapper has spent a good 24hrs+ mapping my current apexi ecu over the past 3yrs when I've had mods mapped in . He constantly tweeks the whole map (off boost and different throttle position's ) and doesn't just aim for pub power so it will just pass the emissions on idle anyways.

If you have a mapper in mind that your going to use maybe just shoot him a email or phone call to see what he suggests you fit prior to mapping for your target power and budget bud

I've done loads of googling and can't find a definitive answer on it... hmmmm