catted hi flow vs catless

[RubyRedBoost]

Hrm, this is the first I've seen/heard of the buzzing at 3k for catless systems. Is this just an issue for certain combinations or all catless headers will produce this buzz? I'm looking at Stainless Works/Power (lethal sale)and I have a Corsa Extreme exhaust currently.

I want the volume and the extra power of the catless systems but not any annoyance like that.

I have the exact combo you are getting. It's more of a rasp than a buzz I would say. Then it comes on very throaty. Just a changeover in the harmonics. I had to put my cats back in. Extremes and catless were a little much. My neighbors hated me at 4:15 every morning. Honestly it just has an overall better sound with the cats in. A lot deeper and refined. If you want loud crackles and pops, go catless. Just my opinion.

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[Taneras]

I have the exact combo you are getting. It's more of a rasp than a buzz I would say. Then it comes on very throaty. Just a changeover in the harmonics. I had to put my cats back in. Extremes and catless were a little much. My neighbors hated me at 4:15 every morning. Honestly it just has an overall better sound with the cats in. A lot deeper and refined. If you want loud crackles and pops, go catless. Just my opinion.

Thanks for the information. I start my car at 7:40 or 8:40 depending on which day of the week it is. So loud startups won't be an issue.

I'm torn as to which sound I'd prefer but I do know I'd really like the increased performance with the catless.

You certainly gave me something to think about, thanks again

 

[RubyRedBoost]

Thanks for the information. I start my car at 7:40 or 8:40 depending on which day of the week it is. So loud startups won't be an issue.

I'm torn as to which sound I'd prefer but I do know I'd really like the increased performance with the catless.

You certainly gave me something to think about, thanks again

You won't feel a difference between the two. But I would buy the catted set up as it's cheaper that way. Then buy the catless leads for $46 dollars from SW works. It's what I did. So you can go back and forth if you wish. I got my SW from Alex at AM for a damn good steal. Might try and PM him.

 

[kai20035]

just had them change my order to the hi flow cats. they are 200 cell. does anyone know the oem cell count. and will I need to change my catless tune?

Sorry to have reawaken this thread and some of the info was very helpful! I read in another forum where the CELL count for the S550's was around 700! I had a Borla S-Type with X pipe setup, added the MAK race pipes drove out of the shop with a huge smile on my face "while being in the country which really hides the true volume!", then entered the city and sh*t the bitch was obnoxiously loud and smelly! I had my welder weld the flange back to my stock cut pipes and went back to the original setup! I figured now since I know that it did sound good but was too loud for my taste and if I went with a 400CELL HFC's it should be right where I want the overall volume to be! I ordered these " 3" Thunderbolt Universal Catalytic Converter High Flow Spun Heavy Metal 99659HM" which is the exact same product as the $300CAD Magnaflow 99659HM so atleast I know the quality is good for these two HFC's and will be getting my welder to put these onto my MAK race pipes. I had already known that the 200CEL wouldn't reduce the sound too much but the 400CEL Thunderbolt's I just got should bring down the tone from being catless to approx. 50% when I had no cats, plus these HFC's will pass emissions in all states except for NY & CA but I'm Ontario, Canada anyways. The bonus of having the Borla S-Type also is that you get 0% drone even if you go catless or with HFC's! I'll have my 2 Thunderbolt's delivered by end of week and hopefully everything will go smoothly as planned.

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