Prepare for dyno tune

[barefootbonzai]

If the header is 2.5' and the catback is 2.25. what size should i go for the cat for now b4 dynotune

2.5 to match the headers.Try that and go bigger piping in the future maybe.
Also try to make sure the 2.5 to 2.25 step down is smooth.

yeah that's what i would do.

But if your header is 2.25 collect, just get a high flow 2.25 Cat to suit the entire system and that should be sweet.

[mugen24]

went to right price exhaust today, they quoted me the metal cat with $310 fully installed.....but i dont know they talking about the branding 'metalcat' or just a metal made car. (Is a genuine branding 'metalcat' like that cheap?)

and then i went to Lee's exhaust, they quoted me $290 for a magnaflow cat with fully install......

so which one should i go and have they quoted me the reasonable price?

[mugen24]

anyone?

[SPEEDCORE]

Clarify re: the metal cat first with right price...

[mugen24]

but i found the 'metal cat' even on ebay is $300++ for the cat itself, how come they can do $310 with fitted....