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Joined: Oct 2004
Posts: 39
nvyseal2332
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nvyseal2332
2000 Midnight Blue Toyota Celica
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2000 Toyota Celica

Joined: Oct 2004
Posts: 39
North Carolina
Jan 30, 7:08pm - #388289 
hi flow cat?

any advantages with using a hi flow cat on our cars? would it help any or just change the sound?

Joined: Jan 2004
Posts: 502
Chaz
Senior Member
Chaz
2000 Silver Toyota Celica GT
Senior Member
2000 Toyota Celica GT

Joined: Jan 2004
Posts: 502
DFW Texas
Jan 30, 7:14pm - #388290 
won't do either from what I have heard. Our cats are pretty high flowing already.


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Posts: 673
XxMerlinxX
Senior Member
XxMerlinxX
2000 Silver Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Oct 2002
Posts: 673
Hartsville/Greenwood, SC
Jan 30, 9:15pm - #388291 
Originally Posted by Chaz
won't do either from what I have heard. Our cats are pretty high flowing already.


Exactly, your aftermarket "hi-flow" cat might actually be more restrictive.


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c4justin
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c4justin

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2000 Toyota Celica

Joined: Oct 2004
Posts: 163
Texas
Jan 30, 9:16pm - #388292 
i was told the same thing that Chaz said! That the celica has a very high flow cat already..

Joined: Aug 2003
Posts: 6,372
Speed4TheNeed
Caleb
Speed4TheNeed

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
Jan 30, 10:30pm - #388293 
almost everything stock in the celica is made pretty good. for instance, a manual gts rates at 180 bhp, and dynos usually throw it around to the 160 whp mark...a loss of only 20 horsies in this case in considerred EXCELLENT.

there is always and definately room for improvement though. i was just making the point that the celica is put together very well from the get-go.

a highflow cat (such as magnaflow's) wouldn't hurt though...it's not more restrictive, but it's not much more free-flowing, either. it'll help, but only a little. this may or may not be worth the $$ to you.

Joined: Jun 2004
Posts: 380
Shiftyz1x
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Shiftyz1x

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2003 Toyota Celica GT

Joined: Jun 2004
Posts: 380
WV, USA
Jan 31, 6:32pm - #388294 
^ nicely said thumbsup

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Posts: 1,696
Polykarb
Metal Storm 2040
Polykarb

Metal Storm 2040
2000 Toyota Celica

Joined: Jun 2004
Posts: 1,696
Tampa, Florida
Jan 31, 6:41pm - #388295 
i think "High Flow" for anything in the exhaust path is a waste of money if you put it on our cars. Really wouldn't make a noticable improvement.


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SLVCELI
Specialist
SLVCELI
2002 Liquid Silver Metall Toyota Celica GT
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2002 Toyota Celica GT

Joined: Feb 2003
Posts: 1,304
West Chester, Ohio
Jan 31, 6:49pm - #388296 
Would buying, say the maganflow cat that will fit our cars the best give out less emissions and also keep the performance the same (or better) or is it generally if the less you pollute, the more power you lose?


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Speed4TheNeed
Caleb
Speed4TheNeed

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
Feb 1, 5:52am - #388297 
Originally Posted by Polykarb
i think "High Flow" for anything in the exhaust path is a waste of money if you put it on our cars. Really wouldn't make a noticable improvement.


i don't understand what you are saying

the trial & dc sports header are 'high flow' and they give out usually 7-9 whp

almost all exhaust systems are 'high flow' and they give out around 3-5 whp


anything that is less restrictive = better, as a rule of thumb thumbsup

Joined: Aug 2003
Posts: 6,372
Speed4TheNeed
Caleb
Speed4TheNeed

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
Feb 1, 5:56am - #388298 
Originally Posted by SLVCELI
Would buying, say the maganflow cat that will fit our cars the best give out less emissions and also keep the performance the same (or better) or is it generally if the less you pollute, the more power you lose?


it would give out about the same emissions, and performance would be the same or better.

and yes..generally, the more you pollute the more power you have. that's just the nature of the beast. it's not saying that pollution = more power, it's that way because we try NOT to pollute. so to NOT pollute more, we put things (such as our catalytic converter) in our exhausts path that restrict the exhausts flow..which decreases power.

supposedly in the future, we will run off of hydrogen (at least thats what they are trying to do) so there will be no harmful emissions which therefore means we won't have a cat at all.

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