best high flow cats, regardless of price?
04-13-2005, 10:35 AM
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Originally Posted by Bubble
04-13-2005, 10:43 AM
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i think the helix are probably the best right now. they flow like the RT's, but have a metal matrix catalyst instead of the ceramic (which apparently falls apart). i have had the RT's for about a year, and have been very happy with them.
04-13-2005, 11:01 AM
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+1 for Helix HF Cats. I have them & they're great 
.
Helix DNA Series High-Flow catalytic converters provide an exceptional balance between maximum power and emission cleanliness. Our high-flow catted products features 200 cell Metal Substrate Catalysts for maximum performance and emissions reduction. We offer complete bolt on applications that have been tested to pass stringent California emissions standards. Our products incorporate full SUS304 stainless steel piping for maximum durability and good looks. Only the finest materials and manufacturing processes are used to ensure a perfect product every time. Every vehicle application is extensively researched and tested before final designs are approved for production.
- 100% SUS304 Stainless Steel
- Robotic TIG Welding
- Thermal boundary heat-shield for rapid light-off and maximum catalyst efficiency
Features: 200 Cell Metal Substrate High Flow Cat with Thermal Shield x 2
Piping Diameter: 60mm X 2
Material: 304 Stainless Steel
G35 Coupes and Sedans require slight modification to the floor panel for clearance.
.Helix DNA Series High-Flow catalytic converters provide an exceptional balance between maximum power and emission cleanliness. Our high-flow catted products features 200 cell Metal Substrate Catalysts for maximum performance and emissions reduction. We offer complete bolt on applications that have been tested to pass stringent California emissions standards. Our products incorporate full SUS304 stainless steel piping for maximum durability and good looks. Only the finest materials and manufacturing processes are used to ensure a perfect product every time. Every vehicle application is extensively researched and tested before final designs are approved for production.
- 100% SUS304 Stainless Steel
- Robotic TIG Welding
- Thermal boundary heat-shield for rapid light-off and maximum catalyst efficiency
Features: 200 Cell Metal Substrate High Flow Cat with Thermal Shield x 2
Piping Diameter: 60mm X 2
Material: 304 Stainless Steel
G35 Coupes and Sedans require slight modification to the floor panel for clearance.
Last edited by GTNPU Z; 04-13-2005 at 12:17 PM.
04-13-2005, 12:05 PM
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Originally Posted by sbcbaseball
Dont trust protcav his great great grandfather is mr.RT.hahah 
I have the craword cats and I love them.They give my stillen exhaust a deep exotic sound.
I have the craword cats and I love them.They give my stillen exhaust a deep exotic sound.
true...but what you don't know, is that sbcbaseball is deaf, so he doesen't know what his exhaust sounds like. it's a sad story. we do know what the aftermath of a california buritto sounds like, though.
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04-13-2005, 02:08 PM
#14
I bought a set of crawford, havent installed them yet. so i have no expereince w/ them but i bought them due to what i read.....
Test pipes make the car sound to Raspy for everyday use for me.... SOME LOVE the sound they get. There are tons of sound clips out there search them. It sucs and takes time but Its worth it then spending 1+Gs on something u wont like...
Test pipes make the car sound to Raspy for everyday use for me.... SOME LOVE the sound they get. There are tons of sound clips out there search them. It sucs and takes time but Its worth it then spending 1+Gs on something u wont like...
'em.
04-14-2005, 02:58 AM
#17
Registered User
Do these rasp?
As soon as I added my DC headers my Kinetix cats started to rasp really bad (I have a Y pipe as well). I'm looking for another set of cats which don't rasp. I've read the Crawford will rasp as well - give the proper combination of exhaust components.
Originally Posted by GTNPU Z
+1 for Helix HF Cats. I have them & they're great .
Helix DNA Series High-Flow catalytic converters provide an exceptional balance between maximum power and emission cleanliness. Our high-flow catted products features 200 cell Metal Substrate Catalysts for maximum performance and emissions reduction. We offer complete bolt on applications that have been tested to pass stringent California emissions standards. Our products incorporate full SUS304 stainless steel piping for maximum durability and good looks. Only the finest materials and manufacturing processes are used to ensure a perfect product every time. Every vehicle application is extensively researched and tested before final designs are approved for production.
- 100% SUS304 Stainless Steel
- Robotic TIG Welding
- Thermal boundary heat-shield for rapid light-off and maximum catalyst efficiency
Features: 200 Cell Metal Substrate High Flow Cat with Thermal Shield x 2
Piping Diameter: 60mm X 2
Material: 304 Stainless Steel
G35 Coupes and Sedans require slight modification to the floor panel for clearance.
.Helix DNA Series High-Flow catalytic converters provide an exceptional balance between maximum power and emission cleanliness. Our high-flow catted products features 200 cell Metal Substrate Catalysts for maximum performance and emissions reduction. We offer complete bolt on applications that have been tested to pass stringent California emissions standards. Our products incorporate full SUS304 stainless steel piping for maximum durability and good looks. Only the finest materials and manufacturing processes are used to ensure a perfect product every time. Every vehicle application is extensively researched and tested before final designs are approved for production.
- 100% SUS304 Stainless Steel
- Robotic TIG Welding
- Thermal boundary heat-shield for rapid light-off and maximum catalyst efficiency
Features: 200 Cell Metal Substrate High Flow Cat with Thermal Shield x 2
Piping Diameter: 60mm X 2
Material: 304 Stainless Steel
G35 Coupes and Sedans require slight modification to the floor panel for clearance.
04-14-2005, 05:59 AM
#19
Originally Posted by GTNPU Z
+1 for Helix HF Cats. I have them & they're great .
Helix DNA Series High-Flow catalytic converters provide an exceptional balance between maximum power and emission cleanliness. Our high-flow catted products features 200 cell Metal Substrate Catalysts for maximum performance and emissions reduction. We offer complete bolt on applications that have been tested to pass stringent California emissions standards. Our products incorporate full SUS304 stainless steel piping for maximum durability and good looks. Only the finest materials and manufacturing processes are used to ensure a perfect product every time. Every vehicle application is extensively researched and tested before final designs are approved for production.
- 100% SUS304 Stainless Steel
- Robotic TIG Welding
- Thermal boundary heat-shield for rapid light-off and maximum catalyst efficiency
Features: 200 Cell Metal Substrate High Flow Cat with Thermal Shield x 2
Piping Diameter: 60mm X 2
Material: 304 Stainless Steel
G35 Coupes and Sedans require slight modification to the floor panel for clearance.
.Helix DNA Series High-Flow catalytic converters provide an exceptional balance between maximum power and emission cleanliness. Our high-flow catted products features 200 cell Metal Substrate Catalysts for maximum performance and emissions reduction. We offer complete bolt on applications that have been tested to pass stringent California emissions standards. Our products incorporate full SUS304 stainless steel piping for maximum durability and good looks. Only the finest materials and manufacturing processes are used to ensure a perfect product every time. Every vehicle application is extensively researched and tested before final designs are approved for production.
- 100% SUS304 Stainless Steel
- Robotic TIG Welding
- Thermal boundary heat-shield for rapid light-off and maximum catalyst efficiency
Features: 200 Cell Metal Substrate High Flow Cat with Thermal Shield x 2
Piping Diameter: 60mm X 2
Material: 304 Stainless Steel
G35 Coupes and Sedans require slight modification to the floor panel for clearance.
04-14-2005, 06:10 AM
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I like test pipes. The ultimate in flow and great sound. Louder? ya, of course... but don't you wanna be mean 
It sounds different than coffee can Civics too, if you are worried about that. I agree if you want tame, emmissions-passing HF cats get metal not ceramic. Actually just go buy a G35 so you can have a back seat and fit golf clubs in the trunk, at the cost of .5 on your 1/4 eta 
j/k
Those Helix look like pretty good quality in the pics. I personally don't know which is best.
It sounds different than coffee can Civics too, if you are worried about that. I agree if you want tame, emmissions-passing HF cats get metal not ceramic. Actually just go buy a G35 so you can have a back seat and fit golf clubs in the trunk, at the cost of .5 on your 1/4 eta j/kThose Helix look like pretty good quality in the pics. I personally don't know which is best.