will cats make a difference?

[mrvx2]

hi all.
Atm i have pacemakers and dual 2 1/2s with no resi, but with stock cats. If i upgrade to highflow cats will i get a different exhaust note?? and much more power??

Cheers frank

[Not_An_Abba_Fan]

They will make it a bit louder and deeper, and they will free it up and give you a bit more go.

I can do metal hi flows for $295 each.

[Hot-Rod]

Your best off going for ceramic cats, I do believe they are the only ones that pass epa aftermarket testing. Could be wrong though. HM make a decent set.

[Vt_vic]

i wouldnt go ceramic a few apparently have melted the insides but i think that really applies if your thrashing it everywhere go for the metal core ones

[Not_An_Abba_Fan]

LS1's eat ceramic cats. The metal high flows that I do meet all EPA requirements and are perfectly legal. They are 200 CPI and flow to around 750hp.

[Sladdo]

Quick questain, will they in any way have an effect on that 'pooping' noise the exhaust makes when you back off the acellerator?

[Not_An_Abba_Fan]

Yes, high flow cats can make it "poop" more.

[v8commy]

hi all.
Atm i have pacemakers and dual 2 1/2s with no resi, but with stock cats. If i upgrade to highflow cats will i get a different exhaust note?? and much more power??

Cheers frank

power no sound yes get a diff ratio change then youll notice the power difference

[jazza15]

Good to see someone trying to get more power out of a V8, not wasting their time and money on a V6

[Not_An_Abba_Fan]

High flow cats do make more power than the stock cats on an LS1 actually.

[Vt_vic]

shite i didnt realise your car was a v8 get the metal ones for sure + a mafless and otr