Have just recently bought my first scoob it's an 06 blobeye wrx, an the 2nd cats toast been looking at a pro drive decat section, an ive read a few threads where people have said itll still sail through an mot an wont need mapped, will I have issues with the lambda sensor though? I know their is a port for it in the decat

 

So basically you want to see if anyone can answer if the 2nd CAT is removed will it require a remap and will it go through the MOT on emissions. I am sure someone on here will help you, or maybe someone can sell you a cat replacement as you just want to get back on the road. I am not sure but would also like to know if anyone can help.

 

👍 developments today I've found a unicorn, in the form of a 2nd cat from an 03 blobeye wrx only 1000 miles on it an reasonable price, seems to be the one I need been toiling with which on i need cause mines an awkward model it's an 06 but takes newage parts as it's the last blobeye, the cat looks very similar on the 06 onwards Hawkeye but has a shorter neck on downpipe side.

 

The answer to you first question , the pre cat on the up pipe you don’t need it , to pass emissions test legally you need a post cat , a sports cat will work , i would not delete it as come mot time it’s hard work ,the map will need checking and possibly adjusting , if the cat you found works then great use that , you could always get the busted cat cut off and a used or new cat welded in , or just buy the correct cat and pipe and bolt it on , then get map checked , hayward and scott do very good systems but you do pay more for better quality , some cheaper sports cats do not last , buy cheaply once and end up paying again

 

Cheers for the help man just been onto scooby world an they're saying I can replace the 2nd cat after the down pipe with the primary cat on it with a decat pipe without a remap, and itll pass an mot, so I ordered a hayward&scott straight through 2nd cat replacement. Fingers crossed then

 

If it's an 06 on the reg plate and it's a Blobeye, then it's a very late registered MY05 (Model Year) so a MY03 2nd cat will fit. MY06 is a Hawkeye with the 2.5L engine and the different down pipe/2nd cat connecting flange.

 

I've ran my Hawk STI without the second cat on for the last 12 years, not had a remap and it's always flown through the emissions test come MOT time.

 

Good to know mate👍 no issues with lambda plugged into decat?

 

Why would there be any issues? Prodrive kit comes with a second decat pipe. Why not just go for a Prodrive sports cat?

You will notice straight away how more free reving it is.

 

correct me if i’m wrong , wrx an uppipe cat a down pipe cat the after turbo one and a mid section cat so three in all ? , mid section i always get rid of and go for a straight through section , flows better plus more burble , up pipe cat not needed and can be an issue if it starts to break down , but you need a after turbo downpipe cat to pass an mot , if i got rid of the first cat , or went sports or decat for the after turbo downpipe cat i would always get map checked , a decat or sports would need a re map or there is little point in changing it , mid section delete that can be changed no issues as it’s after the 02 sensor

 

No mate, no issues at all.

 

No cat in the up pipe on a 2006 onwards 2.5, wrx or sti as far as I know.

 

ok no problem , i knew no cat sti thought the wrx had one

 

I believe some early classics had a cat on the up pipe. No cat in the centre pipe it's a resonator. Although JDM versions may differ.

 

I just thought it might of messed the readings an thrown up a cel that's all mate, spot on though👍

 

I fitted a sports cat to my Non turbo and that sometimes throws up a error code, I will be getting my mate to remap it soon.

 

Sports cat replaces the downpipe/2nd cat right? Is it the same on non turbo?

 

New motor if anyones interested👍

 

 

 

The Non turbo doesn't have a downpipe, but has 2 cats. My Classic turbo had 2 cats, now has one sports cat and no faults. Never heard of a turbo version having an error code on the newage.