Post #1
Was wondering is buying a decat worth it or not ???
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displaying posts 1 to 25 of 25
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 daytime6
Regular  Location: devizes Registered: 20 Jul 2011 Posts: 146 Status: Offline |
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 Posted 20th Jul 2011 at 18:36
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owain
Seasoned Pro  Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #2
You'll fail an MOT and lose torque. How does that sound?________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 20th Jul 2011 at 18:43
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lotek
Seasoned Pro  Location: Berkshire Registered: 04 Dec 2007 Posts: 6,107 Status: Offline |
Post #3
Fantastic! i know il beep for every torque lost ...Beep.beep.beep.beep.beep.beep. oh no i lost count..... dont worry il start again.. beep.beep.beep...... |
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Posted 20th Jul 2011 at 18:49
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daytime6
Regular Location: devizes Registered: 20 Jul 2011 Posts: 146 Status: Offline |
Post #4
Are they that bad then are they,by the amount of ' beeps ' will I lose that many torques will I?? |
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Posted 20th Jul 2011 at 19:43
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #5
Yup, you lose a sack of midrange torque but get a nice noise*. Depends which you'd rather have.*you also get the contents of your silencers emptied out of the road as you drive. ________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 20th Jul 2011 at 19:44
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daytime6
Regular Location: devizes Registered: 20 Jul 2011 Posts: 146 Status: Offline |
Post #6
Because I just brought a magnex decat pipe to go with. My cat back magnex system,will see what it's like I sopose |
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Posted 20th Jul 2011 at 19:57
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #7
Is it still a cat back if you don't have a cat? Who knows. daytime6 wrote: will see what it's like I spose Noisy, I'd imagine. ________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 20th Jul 2011 at 19:59
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daytime6
Regular Location: devizes Registered: 20 Jul 2011 Posts: 146 Status: Offline |
Post #8
It's noisy enough with just the centre section and back box on it,so it'll proble make me go deff, |
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Posted 20th Jul 2011 at 20:23
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #9
I give it a week before you take it back off or get stopped by the Police. ________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 20th Jul 2011 at 20:26
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daytime6
Regular Location: devizes Registered: 20 Jul 2011 Posts: 146 Status: Offline |
Post #10
Your proble right there,will it use anymore fuel or would it still use the same amount,sorry about all the questions but rather no now before I put it on and can't send it back |
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Posted 20th Jul 2011 at 20:48
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #11
I don't think it'll use more fuel, no.________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 20th Jul 2011 at 20:51
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daytime6
Regular Location: devizes Registered: 20 Jul 2011 Posts: 146 Status: Offline |
Post #12
Only one way to find out!!! |
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Posted 20th Jul 2011 at 21:14
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devere
Senior User  Location: Saxtead Registered: 16 Dec 2008 Posts: 810 Status: Offline |
Post #13
I wouldnt worry too much about fitting oone, it probably wouldnt be one of the worlds most common car mods if your car was going to breakdown within 10 minutes of fiting one, just swap the cat back on for mr mot man.If you happen to google backpresure one f the quick links that comes uo, funnily enough is 'backpresure myth'. And this might go someway to answering a bit about it raher than the same people jumping in with the same answers all the while! lol!! http://www.uucmotorwerks.com/html_product/sue462/backpressuretorquemyth.htm |
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Posted 21st Jul 2011 at 01:39
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #14
And if you Google "Elvis" you'll find links about how he's alive and well, doesn't make it fact because it's on the internet. People fit them and feel a noticeable difference. That is a fact. ________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 21st Jul 2011 at 01:54
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devere
Senior User Location: Saxtead Registered: 16 Dec 2008 Posts: 810 Status: Offline |
Post #15
Ahhh, the butt dyno, hope they've all been calibrated recently! haha. |
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Posted 21st Jul 2011 at 02:18
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daytime6
Regular Location: devizes Registered: 20 Jul 2011 Posts: 146 Status: Offline |
Post #16
I work at a garage that does mot tests so should get away with not doing a cat test. |
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Posted 21st Jul 2011 at 03:21
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Rich E
Forum Admin Location: Hertfordshire Registered: 27 Apr 2005 Posts: 7,757 Status: Offline |
Post #17
Just fit a sports cat. You stay road legal and get 99% of decat 'advantages'________________________________________ Rich |
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Posted 21st Jul 2011 at 03:33
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #18
Rich E wrote: Just fit a sports cat. You stay road legal and get 99% of decat 'advantages' Although if you plan on doing that, it's still worth being careful. A mate of mine bought a £1200 sports cat for an M3, and it still failed its MOT. That one got returned. ________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 21st Jul 2011 at 12:49
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #19
its not lower back pressure that a larger pipe causes, but higher due to the gas speeds dropping too fast________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 21st Jul 2011 at 13:39
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lotek
Seasoned Pro Location: Berkshire Registered: 04 Dec 2007 Posts: 6,107 Status: Offline |
Post #20
TBH i have a full GRP N pugsport system on mine and it changed the characteristics of the car, bit slower pulling away but a tiny bit quicker up top, the main benifit is weight saving and nice noise at 7k rpm  |
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Posted 22nd Jul 2011 at 00:12
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midlife
Seasoned Pro  Location: Colne, Lancashire Registered: 13 Mar 2006 Posts: 7,544 Status: Offline |
Post #21
My back to back tests knocked 0.25 of a second off my standing quarter mile with a decat with no other mods  ________________________________________ Get used to seeing the yellow one !!! Team 330™ Team "no front end or engine" Team "LIMITED EDITION" I live for the 306 sticker  Team 0-60 in 6.44 & standing qtr in 14.808 @ 94.55mph all with std engine 203bhp Corolla T-Sport daily driver stealthier than Kwai Chang Caine |
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Posted 22nd Jul 2011 at 00:23
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cwspellowe
Seasoned Pro  Location: Calderbank Registered: 19 Jul 2009 Posts: 6,496 Status: Offline |
Post #22
My decat made a lovely noise when pushing hard but Mr VOSA didn't like it too much unfortunately. The car felt instantly quicker with it removed though.Nice noise vs mid range torque. Your call. ________________________________________ Bye bye Sundance Kid |
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Posted 22nd Jul 2011 at 04:20
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cwspellowe
Seasoned Pro Location: Calderbank Registered: 19 Jul 2009 Posts: 6,496 Status: Offline |
Post #23
devere wrote: I wouldnt worry too much about fitting oone, it probably wouldnt be one of the worlds most common car mods if your car was going to breakdown within 10 minutes of fiting one, just swap the cat back on for mr mot man. If you happen to google backpresure one f the quick links that comes uo, funnily enough is 'backpresure myth'. And this might go someway to answering a bit about it raher than the same people jumping in with the same answers all the while! lol!! http://www.uucmotorwerks.com/html_product/sue462/backpressuretorquemyth.htm And sorry, but that article's terrible, it's like a half-article. It bangs on about carbs and not much else! If backpressure wasn't important, why do manufacturers design exhausts with expansion chambers to manipulate the airflow when they could just have no exhaust altogether? And why does the GTI6 manifold, for instance, look like a work of art when they could just have one big box covering all four ports? ________________________________________ Bye bye Sundance Kid |
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Posted 22nd Jul 2011 at 04:25
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #24
Erm, because they obviously hadn't seen that article Chris. Bet they're kicking themselves now.________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 22nd Jul 2011 at 14:19
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cwspellowe
Seasoned Pro Location: Calderbank Registered: 19 Jul 2009 Posts: 6,496 Status: Offline |
Post #25
I think I need to redesign my airbox as well then, going by what they're saying I'd be better with a cardboard bonnet scoop leading to drainpipe plenumsITB's very much FTL ________________________________________ Bye bye Sundance Kid |
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Posted 22nd Jul 2011 at 23:48
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