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11-11-2009, 09:53 PM
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#1
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Join Date: Sep 2009
Location: Staten Island, NY
Posts: 206
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High Flow Cats Whichs one and where to buy them?
ok i am thinking of getting high flow cats .. the main reason is to help with the dread smell ...from any high preformance car ... which ones do you like and where to buy them from
also did you loose any preformance when install?
Last edited by siguy; 11-11-2009 at 09:54 PM.
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11-11-2009, 10:44 PM
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#2
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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I've always heard and had good experience with Magnaflow / Carsound / Catco converters. I've never seen any real CFM tests on them, but usually hear that they all flow within a reasonable amount of each other. Unless you have a real crazy setup, you aren't gonna lose more than a couple of HP.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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11-12-2009, 05:50 AM
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#3
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Join Date: Sep 2009
Location: eastampton
Posts: 103
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i went with the high flow cats from slp. before the cats they tuned it and it put down 381 trq and 385 hp. after the cats were installed i had another guy tune it and it put down 387 trq and 391 horsepower. so the little bit of back pressure actually helped me. at that time
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 bbk intake,heads,cam,injectors,throttlebody,longtubes, highflowcats,
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11-12-2009, 02:17 PM
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#4
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Join Date: Sep 2009
Location: Staten Island, NY
Posts: 206
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yes i was just worried about my set up with the supercharger if i would hurt performance but from the looks of it i should be ok
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11-12-2009, 03:01 PM
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#5
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,215
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My car has a pair of 3" cats I got used off LS1Tech for $50 so search around, you might find a good deal. Pypes used to make a really small 3" cat but they don't offer that style anymore. Magnaflow has the spun metal cats which are pretty small as well. The cats definitely helped with the smell and it passes the visual inspection.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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11-12-2009, 03:58 PM
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#6
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Join Date: Sep 2009
Location: Staten Island, NY
Posts: 206
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Quote:
Originally Posted by JL8Jeff
My car has a pair of 3" cats I got used off LS1Tech for $50 so search around, you might find a good deal. Pypes used to make a really small 3" cat but they don't offer that style anymore. Magnaflow has the spun metal cats which are pretty small as well. The cats definitely helped with the smell and it passes the visual inspection.
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Yes I liked the way yours is set up that's what got me thinking to put a set on my car (what brand do you have you your set up)
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11-13-2009, 06:56 AM
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#7
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12 Second Club
Join Date: Aug 2004
Location: West Milford
Posts: 8,372
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ive got a magnaflow on my 88, i saw them on the shelf at pep boys recently too
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88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
04 Grand Cherokee
06 GMC Sierra
07 Sublime Charger Daytona
12 Tahoe LT
17 Malibu LT
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11-13-2009, 07:28 AM
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#8
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,215
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Quote:
Originally Posted by siguy
Yes I liked the way yours is set up that's what got me thinking to put a set on my car (what brand do you have you your set up)
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I'm not really sure what brand they are, but Magnaflow, Catco, Carsound, Walker, Dynomax are all pretty much the same. The Magnaflow metallic spun cats are different though. SLP has some 3" cats that are a little different as well.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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11-15-2009, 10:50 AM
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#9
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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I'm running the 3" dynotechs (Jegs).
http://www.97transam.com/pampered-z/IMG_1135.jpg
Mufflex built it on the car, 3" y-pipe into a 4" collector then 4" all the way out the back.
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
Last edited by Pampered-Z; 11-15-2009 at 10:50 AM.
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11-15-2009, 09:02 PM
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#10
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Join Date: Sep 2009
Location: Staten Island, NY
Posts: 206
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Quote:
Originally Posted by Pampered-Z
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cool ypipe
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383 Motor with 9:1, P1SC Procharger and much more
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11-16-2009, 09:20 AM
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#11
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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Quote:
Originally Posted by siguy
cool ypipe
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Had to do some odd twist and turns to get around my torque arm mount. I have a customized Spohn TA mount to work with the 4" exhaust. So the driver's side pipe has to snake it's way everything. I didn't want a 3" merge, I wanted the pipes right into the 4" system so no restrictions and that had to be set up so it was before the TA mount.
Every time I bring my car into Mufflex Dennis starts twitching because I know how I want things done so everything has to be fabricated to fit. nothing off-the-shelf will work on my car.
You should see all the tiny angles on my intercooler pipes. Dennis welded them then after he built it I ground the welds down so that when I had then Jethot coated they were all smooth.
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
Last edited by Pampered-Z; 11-16-2009 at 09:29 AM.
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01-11-2010, 10:53 AM
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#12
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Join Date: Nov 2009
Location: Williamstown, NJ
Posts: 246
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I went with the SLP 3" on my car, not really sure if they do anything b/c i get a smell of raw fuel still lol
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01-13-2010, 02:43 PM
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#13
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,215
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Quote:
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I went with the SLP 3" on my car, not really sure if they do anything b/c i get a smell of raw fuel still lol
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Sounds like a bad tune. What is the info on your motor and the tune?
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
Last edited by JL8Jeff; 01-13-2010 at 02:45 PM.
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01-14-2010, 10:50 AM
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#14
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Join Date: Dec 2004
Location: Browns Mills NJ/ Rotondo West FL
Posts: 3,054
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I had Catco's on my old 97 LT1...there were cheap and held up well. I either got them off of jegs or summit...it was years ago.
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AI HCR 241's , Lunati 223/236 .615/.626 114+2 , Full Exhaust , Ported Fast 92 , Ported LS2 TB , Veraram , 85mm MAF , Circle D 4000 , 3.42's , GTP 36# , CSP Dyno tune. More on the way
420 HP/367 TQ on a Unlocked Converter & still climbing.
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01-14-2010, 08:07 PM
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#15
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Join Date: Apr 2008
Location: Morris County, NJ
Posts: 538
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I have a Magnaflow on my Iroc (its supercharged) and have had no issues...no loss of performance that I can tell...(seat of the pants wise, anyway). Id go with them.
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355 & Supercharged... 
Another trip inside the acid bath..no salvation and the grave is coming fast..
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01-19-2010, 10:40 PM
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#16
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,134
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Im going wiht bullet style magnaflows...I can get them at cost, and a case of beer for install...  no brainer 
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01-29-2010, 07:54 AM
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#17
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13 Second Club
Join Date: Aug 2006
Location: Edison, NJ
Posts: 887
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Quote:
Originally Posted by Tru2Chevy
I've always heard and had good experience with Magnaflow / Carsound / Catco converters. I've never seen any real CFM tests on them, but usually hear that they all flow within a reasonable amount of each other. Unless you have a real crazy setup, you aren't gonna lose more than a couple of HP.
- Justin
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Magnaflow are the ones I am using and I am happy with them..
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2001 Firebird, Formula M6 purchased brand new.
