View Full Version : hi flow cat
kaz
October 21st, 2002, 11:42 AM
I want to intall a hi flow cat, anyone know of any brand and whats the pros and cons about doing this
thanks http://msg.toprotege.com/iB_html/non-cgi/emoticons/biggrin.gif
Protege5 Kid
October 21st, 2002, 12:17 PM
I had one on my 626. Found it to be great...just like the name says...Hi Flow...sure felt like it.. the exaust did however get a bit louder...which was cool.
Just remember to buy Two if you've got a P5
YP5 Toronto
October 21st, 2002, 12:52 PM
Kaz...are you going the Forced Induction route? You really don't need to go with an entirely new cat. You can imporve its performance by opening up the inlet and exit openings to match....your larger piping?
YP5 Toronto
October 21st, 2002, 02:13 PM
kaz...your message box is full!!!!
KDawgONE
October 22nd, 2002, 10:38 AM
I had a Magnaflow on my 91 Escort GT (90-94 Protege 1.8L BP series motor) and noticed an increase in both torque and noise! It was about $140.
ChopstickHero
October 22nd, 2002, 11:39 AM
For those of you that went to the Brullen Meet back in May, don't you remember Richard (owner of Brullen) talking about Hi-Flow cats? He said that there are many many brands of hi-flow cats, but only 2 manufacturers of the actual cat filters: Dupont... and some other big company.
So the point is, that hi-flow cats are all about marketing and making you believe that it's actually hi-flow. yes, there will be variations in the construction of the cat, but the filter will remain essentially the same, meaning the air flow will be almost the same. if you're getting one, you're definitely looking into the placebo effect.
www.spool-turbo.com
October 23rd, 2002, 11:38 PM
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">So the point is, that hi-flow cats are all about marketing and making you believe that it's actually hi-flow. yes, there will be variations in the construction of the cat, but the filter will remain essentially the same, meaning the air flow will be almost the same. if you're getting one, you're definitely looking into the placebo effect.[/QUOTE]<span id='postcolor'>
Yes very true http://msg.toprotege.com/iB_html/non-cgi/emoticons/smile.gif
The only way to really extract performance thru cats is to use larger diameter cats. Because really if you stay with lets say a 1.75 inch cat and you go to a high flow model you will not really increase flow. The trick is to increase diameter of the cat (and the rest of the exhaust plumbing would be good too) The max size of the exhaust diameter on our cars N/A should be 2.25 inches. A trick is to use cats out of older cars with bigger diameters. I am almost certain that the corvette and camaro use 2.25 inch or 2.5 inch cats. That would be perfect for our application. You could probably pick one up at a salvage yard or your local exhaust shop may have one laying around.
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