darylbob

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

siluro

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.

darylbob

👍 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.

Vxr2010

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

darylbob

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

Don Clark

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.

Gsi Jay

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.

darylbob

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

jaygsi

iTrader: (46)

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.

Vxr2010

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

Gsi Jay

No mate, no issues at all.

Gsi Jay

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

Vxr2010

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

jaygsi

iTrader: (46)

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.

darylbob

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

jaygsi

iTrader: (46)

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.

darylbob

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

darylbob

New motor if anyones interested👍

darylbob

darylbob

jaygsi

iTrader: (46)

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.