308 Catalytic Converter replacements

newark_308 · 12-26-2011, 08:58 AM

Any tips or hints on how to replace the catalytic converters on a '83 308qv? Tools needed, step by step etc....
Plan on replacing originals with Hyper-Flows

Thanks in advance
Glenn Frenck

Brian · 12-26-2011, 09:32 AM

I would stay away from Hyperflow. I have been having failures of their cats lately and they will not honor warranty coverage.

Their cats for a 308 are very overpriced and they provide no evidence there is any performance improvement. If you need cats I think you are far better off buying generic cats and saving more than 1000 dollars.

wetpet · 12-26-2011, 11:20 AM

i have had a hyperflow on my 328 for a couple of years without problems. Not discounting brian's experience, just adding another data point. No hp boost that i can claim, mainly sound. I remember looking into low restriction cats awhile ago and there are several producers. half of them will make them up for you or modify your cat if you send it in. Look around if you think the hyperflows are overpriced and/or fail. Mine was pretty cheap because i only needed one and got it new/second hand. i think i paid $600? anyway, there are always test pipes.

by the way, on the 328 it is a pretty simple bolt on that would be self explanatory when you look at it. Don't know if your 308 is similar.

newark_308 · 01-07-2012, 07:14 AM

Reference material

Hyperflow catalytic converters for 308's

Passed Delaware emissions inspection with flying colors. results below for reference.

HydroCarbons limit 220ppm Tested 11ppm @ low idle (990rpm)
limit 220ppm Tested 0 ppm @ high idle (2500rpm)

Carbon Monoxide limit 1.2% Tested .01% @ low idle
limit 1.2% Tested .01% @ high idle

Really shows that the old cat's were well and truly shot. I did save them though...

ALEX A · 01-07-2012, 02:59 PM

I have sold many and installed many hyper flow cats. I never had a problem. Not to say that thing do happen. Troy at hyper flow has always been good to me.Just my experience.
Alex.

ALEX A · 01-07-2012, 03:02 PM

Most failures that i heard about are from the car's not running correctly and melting the cats.
If the car melts the cats no one will warranty the parts
Alex.

12-26-2011, 08:58 AM	#1
newark_308 Join Date: Nov 2011 Location: Newark DE Ferrari Life Posts: 2 Name: Glenn Frenck	308 Catalytic Converter replacements Any tips or hints on how to replace the catalytic converters on a '83 308qv? Tools needed, step by step etc.... Plan on replacing originals with Hyper-Flows Thanks in advance Glenn Frenck

12-26-2011, 09:32 AM	#2
Brian Owner Elite Member Join Date: Jul 2005 Location: Northern California Ferrari Life Posts: 859 Name: Brian Crall	I would stay away from Hyperflow. I have been having failures of their cats lately and they will not honor warranty coverage. Their cats for a 308 are very overpriced and they provide no evidence there is any performance improvement. If you need cats I think you are far better off buying generic cats and saving more than 1000 dollars. Last edited by Brian; 12-26-2011 at 09:40 AM.

12-26-2011, 11:20 AM	#3
wetpet Owner Elite Member Join Date: Jan 2006 Location: Chevy Chase, Md Ferrari Life Posts: 6,603 Name: Ed	i have had a hyperflow on my 328 for a couple of years without problems. Not discounting brian's experience, just adding another data point. No hp boost that i can claim, mainly sound. I remember looking into low restriction cats awhile ago and there are several producers. half of them will make them up for you or modify your cat if you send it in. Look around if you think the hyperflows are overpriced and/or fail. Mine was pretty cheap because i only needed one and got it new/second hand. i think i paid $600? anyway, there are always test pipes. by the way, on the 328 it is a pretty simple bolt on that would be self explanatory when you look at it. Don't know if your 308 is similar. Everything you know is wrong Stop chatting and start living the ferrarilife!

01-07-2012, 02:59 PM	#5
ALEX A Sponsor Elite Member Join Date: Nov 2009 Location: ONTARIO Ferrari Life Posts: 308 Name: ALEX ARMELLIN	I have sold many and installed many hyper flow cats. I never had a problem. Not to say that thing do happen. Troy at hyper flow has always been good to me.Just my experience. Alex. Ferrari Service Daytona Sport Cars 5309 Hwy 7 Woodbridge Ontario 905 264 9982 www.daytonaauto.ca DEALER FOR X-OST MARANELLO SPORT MUFFLERS

01-07-2012, 03:02 PM	#6
ALEX A Sponsor Elite Member Join Date: Nov 2009 Location: ONTARIO Ferrari Life Posts: 308 Name: ALEX ARMELLIN	Most failures that i heard about are from the car's not running correctly and melting the cats. If the car melts the cats no one will warranty the parts Alex. Ferrari Service Daytona Sport Cars 5309 Hwy 7 Woodbridge Ontario 905 264 9982 www.daytonaauto.ca DEALER FOR X-OST MARANELLO SPORT MUFFLERS

01-07-2012, 07:14 AM	#4
newark_308 Join Date: Nov 2011 Location: Newark DE Ferrari Life Posts: 2 Name: Glenn Frenck	Reference material Hyperflow catalytic converters for 308's Passed Delaware emissions inspection with flying colors. results below for reference. HydroCarbons limit 220ppm Tested 11ppm @ low idle (990rpm) limit 220ppm Tested 0 ppm @ high idle (2500rpm) Carbon Monoxide limit 1.2% Tested .01% @ low idle limit 1.2% Tested .01% @ high idle Really shows that the old cat's were well and truly shot. I did save them though...

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