View Full Version : Down pipe and cat
cupra-neil
05-03-2004, 23:54
Do scorpion make a down pipe and sports cat for the ibiza cupra??
Dont think so.:(
If they did I would have them.
I was told a couple of months ago that they were doing a cat-replacement pipe. Not sure how they will get over the two lambda probe boss problem though?
cupra-neil
06-03-2004, 12:44
Shame cause i would have them aswell. Do you know wot bore size the scorpion cat back pipes are? would miltech down pipe and sports cat fit onto my scorpion cat system :confused:
Originally posted by loafer
Dont think so.:(
If they did I would have them.
I was told a couple of months ago that they were doing a cat-replacement pipe. Not sure how they will get over the two lambda probe boss problem though?
what two lambda probe problem???
a logged fault code and check light on the dash is the only issue as far as im aware if you leave the after cat lambda to air when installing a decat.
This sensor doesnt cut back on the ecu as long as the pre cat lambda is resited back into the exhaust system.
Im sure it would fit.
Thinkin about it, the miltek cat + downpipe is a 'std replacement', and so is the scoprion cat back system, the scorpion fits the std cat, as does the miltek cat back system, the miltek catback system fits the miltek sports cat+down pipe so mix some of those up and everything should fit everything else if that makes sense!?!
if it isnt a direct fit, any decent zorst place/mechanic would be able to make it fit. zorsts are simple things tbh
Mark
Originally posted by Deejay
what two lambda probe problem???
a logged fault code and check light on the dash is the only issue as far as im aware if you leave the after cat lambda to air when installing a decat.
This sensor doesnt cut back on the ecu as long as the pre cat lambda is resited back into the exhaust system.
Well okay, it doesn't effect the car but its not ideal is it!
Its hardly great engineering is it. Would you buy a induction kit for example if it threw up lights on dash/fault codes. Dont think so.
Just my two pence worth.
:cheers:
Originally posted by mk4polo
Im sure it would fit.
Thinkin about it, the miltek cat + downpipe is a 'std replacement', and so is the scoprion cat back system, the scorpion fits the std cat, as does the miltek cat back system, the miltek catback system fits the miltek sports cat+down pipe so mix some of those up and everything should fit everything else if that makes sense!?!
if it isnt a direct fit, any decent zorst place/mechanic would be able to make it fit. zorsts are simple things tbh
Mark
Who wants to try it then?:D
cupra-neil
07-03-2004, 11:07
Im want to try this set up if i can get it to fit, depending on prices? thanx for the help peeps :D
yeah im planning on trying it sometime, like i say, if its not a 100% direct fit, it wont be hard for someone to fit it for you.
downpipe + cat was on special offer from AMD recently
Mark
cupra-neil
07-03-2004, 12:06
Im going to email scorpion and miltech to get the bore sizes of all the pipes and go from there, see wot they say.
neil, was it you i had a bit of a race with a few weeks back near borden, then alton, then the A31, onto the blackwater valley road?
i had a bit of fun with a blue cupra (mines blue too) and from your sig spec it could be yours?
Mark
cupra-neil
07-03-2004, 13:27
yes mate that was me and the misses, nice quick motor you got there made mine look stupid, you convinced me to get a chip, didnt have my exhaust on then is now though :D :D
Originally posted by loafer
Well okay, it doesn't effect the car but its not ideal is it!
Its hardly great engineering is it. Would you buy a induction kit for example if it threw up lights on dash/fault codes. Dont think so.
Just my two pence worth.
:cheers:
totally agree!
thats why vag-com maybe a good idea if considering this mod so you can clear the fault(s) on a regular basis ;)
looking into a decat for my cupra next-just need to nick a laptop from work first sp I can get vag-com.
neil; yeah sorry about that, couldnt resist a blast:D i've changed the zorst since then too, got the scorpion twin slash cut cat back system now (i was on my way home from picking it up that night actually!)
Im sure ill see you around again sometime!
Let us know what both companys say!
Cheers
Mark
chriskaven
08-03-2004, 15:44
Originally posted by Deejay
totally agree!
thats why vag-com maybe a good idea if considering this mod so you can clear the fault(s) on a regular basis ;)
looking into a decat for my cupra next-just need to nick a laptop from work first sp I can get vag-com.
Its not just the check light. Although the engine doesn't use the second lambda prope on Wide Open Throttle, it uses it at part load conditions to trim the air fuel ratio for best fuel economy and emissions. You would probably therfore loose some fuel economy benefit - unless of course you drive at Wide Open Throttle all the time!:D
My electrical background should hopefully come up with something to fool the ecu (capacitor and resistor in series conected to the aft cat lambda???)
210 miles per tank is crap fuel economy anyhow
I've got the decat on order now anyhow,hopefully will be fited by yours truly in time for the rr day on the 28th of march I'm organising;)
ta
Dan
chriskaven
08-03-2004, 19:57
Sounds good. I rekon you would have an open market on here if you developed such a circuit that worked and fooled the ECU.;)
I think the check light is something putting a lot of people off of having a de cat.
am i missing something? - could you not just fit the probe to the decat pipe? i know it would mean drilling, then welding a boss onto the pipe to take the probe or something similar, but surely thats better overall than just fooling the ecu?
Mark
chriskaven
08-03-2004, 20:32
The point is that even if the 2nd lambda is installed there isn't a cat there anymore!!
The second lambda is basically used to tell you when the cat is knackered. The ECU compares the emissions before and after the cat and if there is no difference then it thinks the cat is knackered or in this case, it is not there at all!
i see - so i was missing the point!;) :D
Mark:cheers:
the downpipe and cat I am getting has the connection there for the pre cat lambda so that one is not an issue. just the rear one we have to worry about
cupra-neil
12-03-2004, 23:45
Just to let people know ive emailed Scorpion and Milltek about bore sizes, to see if you can put a miltek cat onto a Scorpion box, just waiting on a reply.
Just to let people know ive emailed Scorpion and Milltek about bore sizes, to see if you can put a miltek cat onto a Scorpion box, just waiting on a reply.
Top man!
:thumbup: