High Flow Cats for V6?

[kodypiccirilli]

Are there any manufacturers making high flow cats for s550s? In specific any to fit v6 models?

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[hiccup]

Aren't the factory cats much less restrictive than those of ten or more years ago. I remember the old v8 camaro / firebirds of the early 80's. Cut off the cats and burn rubber now. Those really choked the hell out of the car back then.

 

[joonkim92]

Are there any manufacturers making high flow cats for s550s? In specific any to fit v6 models?

I know bbk has a pair of high flow cats onto an h pipe. But I think it might be meant to be used with longtube headers, but check out bbk website

 

[BE6Pony]

Are there any manufacturers making high flow cats for s550s? In specific any to fit v6 models?

BBk but I had my universal high flows welded in to replace the old ones that came on the car.

 

[kodypiccirilli]

BBk but I had my universal high flows welded in to replace the old ones that came on the car.

Thats basically what i think im going to do, did you feel any power gains, and how is the sound difference?

 

[BE6Pony]

Thats basically what i think im going to do, did you feel any power gains, and how is the sound difference?

Well I had x pipe and roush axle backs, keep in mind I have bbk LT headers not just high flows, and power gain I don't know would need to dyno it, anything under 3k I have hesitation and its jumpy because I need more intake air but its ridiculous loud. but I have had a lot of people say it sounds good.

 

[kodypiccirilli]

Well I had x pipe and roush axle backs, keep in mind I have bbk LT headers not just high flows, and power gain I don't know would need to dyno it, anything under 3k I have hesitation and its jumpy because I need more intake air but its ridiculous loud. but I have had a lot of people say it sounds good.

Yeah my friend has a 2013 v6 with full exhaust and its stupid loud haha, Im wanting to get shorty headers with high flow cats to make it louder but not ridiculous

 

[BE6Pony]

Yeah my friend has a 2013 v6 with full exhaust and its stupid loud haha, Im wanting to get shorty headers with high flow cats to make it louder but not ridiculous

If I did it again I would go with shorty I would've saved so much money and hassle BBk wasn't the most intelligent or helpful people by far.

 

[kodypiccirilli]

How much will high flow cats change the volume of the exhaust?

 

[BE6Pony]

How much will high flow cats change the volume of the exhaust?

A lot every car I have ever had without them then put them on it was drastic.

 

[kodypiccirilli]

A lot every car I have ever had without them then put them on it was drastic.

How does it compare to no cats?

 

[BE6Pony]

How does it compare to no cats?

I was going to go catless, catless will make it louder but it will sound like crap I was so much happier with high flows because mine was so loud with them that I would've been un happy with straight. Its way cheaper to straight it but it will not sound good at all.

 

[buggy whip]

Anyone know what the length & diameter of the factory GT cats are ?
I don't have a floor Jack & the car sits too low to crawl under to measure.

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