Which cats to remove
#1
Scooby Newbie
Thread Starter
Which cats to remove
Hiya everyone,
I’ve been planning on removing some of the cats on my WRX Blobeye and getting it tuned, as I’m sure many of you have too. I’ve got an STI uppipe (no cat) as I’ve heard about the old cats being sucked into the turbine etc.
I intending to remove the centre section cat and replace the downpipe one with a sports cat. Reading up on it it looks like passing MoT is a bit hit and miss with just a sports cat… what do you guys think? I was considering leaving just the OEM downpipe cat in place or maybe having two sports cats (downpipe and centre section) - or is that a stupid idea? I’m thinking from a ‘liberate more power’ standpoint but I don’t want to fail MoT and then spend more money on mods I could’ve done to begin with…
Thanks in advance,
DAS
I’ve been planning on removing some of the cats on my WRX Blobeye and getting it tuned, as I’m sure many of you have too. I’ve got an STI uppipe (no cat) as I’ve heard about the old cats being sucked into the turbine etc.
I intending to remove the centre section cat and replace the downpipe one with a sports cat. Reading up on it it looks like passing MoT is a bit hit and miss with just a sports cat… what do you guys think? I was considering leaving just the OEM downpipe cat in place or maybe having two sports cats (downpipe and centre section) - or is that a stupid idea? I’m thinking from a ‘liberate more power’ standpoint but I don’t want to fail MoT and then spend more money on mods I could’ve done to begin with…
Thanks in advance,
DAS
#2
Scooby Regular
Prodrive removed the 2nd downpipe cat for their PPP package (rear item 2 below)
and replaced it with a straight through section with brackets onto which you could refit the cat heatshields back around the lambda as per OEM.
For STI models they also replace the down pipe cat with a sports cat
and replaced it with a straight through section with brackets onto which you could refit the cat heatshields back around the lambda as per OEM.
For STI models they also replace the down pipe cat with a sports cat
Last edited by Don Clark; 14 October 2021 at 07:13 PM.
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#3
Scooby Regular
iTrader: (2)
Can never understand this dilemma numerous Subaru's about me not one cat to be seen. Now apart from the visual check they all pass with flying colours with a decent map. If they pass they don't generally look for the cat visually and there all tested in government run test stations in N.I.
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#4
Scooby Newbie
Thread Starter
Prodrive removed the 2nd downpipe cat for their PPP package (rear item 2 below)
and replaced it with a straight through section with brackets onto which you could refit the cat heatshields back around the lambda as per OEM.
For STI models they also replace the down pipe cat with a sports cat
and replaced it with a straight through section with brackets onto which you could refit the cat heatshields back around the lambda as per OEM.
For STI models they also replace the down pipe cat with a sports cat
Last edited by DA5istME; 14 October 2021 at 08:48 PM.
#5
Scooby Newbie
Thread Starter
Can never understand this dilemma numerous Subaru's about me not one cat to be seen. Now apart from the visual check they all pass with flying colours with a decent map. If they pass they don't generally look for the cat visually and there all tested in government run test stations in N.I.
Last edited by DA5istME; 14 October 2021 at 08:49 PM.
#7
Scooby Newbie
Thread Starter
yeah that was the original idea but I want to be sure to pass MoT tests. I don’t want to fork out more money to buy different cats I should’ve bought in the first place and I also don’t wanna swap the oem cats back on once a year
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#8
Scooby Regular
If You are getting it tuned go for sportscat,sell oem ,prodrive sportscat is 100cell but used one will be 16y old -could fail when tested.
#9
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11 March 2015 08:27 PM