This is for a 91 legacy SS with a 95 EJ20 motor.
I'm going to be buying a 3" borla muffler from Borla and having an exhaust shop bend me a 3" exhaust to mate up to my 3" downpipe. I was going to also buy a high flow cat but then I started thinking, maybe I don't need one. There's no testing in my county.
Should I use a cat or no?
Do I need a cat?
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kimokalihi
- Fifth Gear
- Posts: 8360
- Joined: Mon Nov 06, 2006 3:41 am
- Location: Tenino, WA
Do I need a cat?
98 Metro Hatch Daily Driver :)
91 SS EJ20G Engine/Tranny/Diff Swap Build Thread Here
"Your testes are close to your bottom but you still play with them all the time." Jeremy Clarkson
91 SS EJ20G Engine/Tranny/Diff Swap Build Thread Here
"Your testes are close to your bottom but you still play with them all the time." Jeremy Clarkson
That depends on you. I don't think there's a huge performance hit by installing a high flow cat. Plus if you move some place that has emission testing or you sell the car, not having a cat can be a potential issue.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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kimokalihi
- Fifth Gear
- Posts: 8360
- Joined: Mon Nov 06, 2006 3:41 am
- Location: Tenino, WA
Alright, I'm not against it. Just thought I could save some money this way.
Which brand should I get? Or does it matter? How much are they?
Which brand should I get? Or does it matter? How much are they?
98 Metro Hatch Daily Driver :)
91 SS EJ20G Engine/Tranny/Diff Swap Build Thread Here
"Your testes are close to your bottom but you still play with them all the time." Jeremy Clarkson
91 SS EJ20G Engine/Tranny/Diff Swap Build Thread Here
"Your testes are close to your bottom but you still play with them all the time." Jeremy Clarkson
I don't think it really matters. The newer high flow cats or the least flow restriction cats seem to be metal substrate cats vs. some of the older ceramic substrate cats.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm