tdwindustries Posted February 16, 2005 Report Share Posted February 16, 2005 I think I am going to do this in the next week or so, but I want to keep the exhaust standard. What do you put where the cat and `pre-cate` used to be? Anything special? Also any pictures of the `pre-cat`?cheers Quote Link to comment Share on other sites More sharing options...
Blackrat Posted February 16, 2005 Report Share Posted February 16, 2005 to take the precat out is done by using a big hammer and a screwdriver combined with a drill with a hole drill attachment and lots of cursing !main cat you actually have the cat taken out then have a section of exhaust pipe welded in to replace the missing cat.ross has done both , we did the `pre-cat` at his house, it not that hard , but can be a bit frustrating Quote Link to comment Share on other sites More sharing options...
Altern8 Posted February 16, 2005 Report Share Posted February 16, 2005 de cat get a bypass pipe put in and ahve them mod the currtent cat ready for the mot just unbolt and bolt the cat back in style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Quote Link to comment Share on other sites More sharing options...
tdwindustries Posted February 16, 2005 Author Report Share Posted February 16, 2005 thanks boys. yeah cats simple enough as my MOT station has said they will do it - what sort of mod would they need to do so it would go back in?I have seen pics of `pre-cats` being removed in other cars, but not the old lupo. so you dont need to do anything where the `pre-cat` was, it can just be straight through? Quote Link to comment Share on other sites More sharing options...
gargoil Posted February 16, 2005 Report Share Posted February 16, 2005 Yup thats what I had then a powerflow pipe straight out the back! Quote Link to comment Share on other sites More sharing options...
tdwindustries Posted February 16, 2005 Author Report Share Posted February 16, 2005 you had no cat or `pre-cats` either?i wanna keep the standard pipes Quote Link to comment Share on other sites More sharing options...
Arosa FR Posted February 16, 2005 Report Share Posted February 16, 2005 So lads, if I understood well,The pre cat can be removed, as well as the main cat.Both can be replaced by normal pipes and `by-pass` connections created on the Lamda.....?Please anyone advise Quote Link to comment Share on other sites More sharing options...
Tigz™ Posted February 16, 2005 Report Share Posted February 16, 2005 I think you'll end up with your EDC light on after doing this wont ya?How do you go about mounting the lamber?Is it a case of mounting it into the replacment straight through pipe?Not that I wanna do it, just intrested style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> Quote Link to comment Share on other sites More sharing options...
tdwindustries Posted February 16, 2005 Author Report Share Posted February 16, 2005 `pre-cat` is in the pipe and can be removed and the pipe put back together. Not sure about the light.... ross hasnt got his on.... Quote Link to comment Share on other sites More sharing options...
Tigz™ Posted February 16, 2005 Report Share Posted February 16, 2005 I thought he did? Quote Link to comment Share on other sites More sharing options...
tdwindustries Posted February 16, 2005 Author Report Share Posted February 16, 2005 only light on was ABS and thats off now..... maybe he disconnected the wire Quote Link to comment Share on other sites More sharing options...
Arosa FR Posted February 16, 2005 Report Share Posted February 16, 2005 Yeah, I believe the light usually goes on...The pre cat is just after the main manifold then a little way down you get the main cat...then another chamber (i think the `anti-explosion` chamber or something like that) then the back box.......which is huge.An expensive alternative is to get a more '`free-flowing`' cat replacement which won't alter the lamber readings and prevent the dash lighting up like a christmas tree...... Quote Link to comment Share on other sites More sharing options...
willh Posted February 16, 2005 Report Share Posted February 16, 2005 I removed the Cat on my old motor, but the Lamda sensor was on the actual unit which I think is what you're talkin about here.Powerflow sorted it out for me, but had to drill and tap into the new straight thru pipe so they could screw the sensor back in. Essentially the sensor 's still in the same place and doing the same job, even tho the gases are encountering less resistance etc. Quote Link to comment Share on other sites More sharing options...
Tigz™ Posted February 16, 2005 Report Share Posted February 16, 2005 QUOTE(willh)but had to drill and tap into the new straight thru pipe so they could screw the sensor back in. Thats what I was wondering Cheers Will Quote Link to comment Share on other sites More sharing options...
tdwindustries Posted February 16, 2005 Author Report Share Posted February 16, 2005 grrrrr8 thanks for thatwill ask ross later bout his light Quote Link to comment Share on other sites More sharing options...
gargoil Posted February 16, 2005 Report Share Posted February 16, 2005 Yeah any custom exhaust place will be able to relocate the sensor into the system! Quote Link to comment Share on other sites More sharing options...
morgs Posted February 16, 2005 Report Share Posted February 16, 2005 i would also like to know about the light that comes on as i'm also planningto do this style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> would powerflow know all about this and sort it out as part of the job? Quote Link to comment Share on other sites More sharing options...
tdwindustries Posted February 16, 2005 Author Report Share Posted February 16, 2005 I am sure they can do the whole thing, only I dont want to spend any money......... Quote Link to comment Share on other sites More sharing options...
payna Posted February 16, 2005 Report Share Posted February 16, 2005 iam sure i read somthing about it having two sensors... one before the cat and one after??? i may be wrong though. Quote Link to comment Share on other sites More sharing options...
Tigz™ Posted February 16, 2005 Report Share Posted February 16, 2005 QUOTE(payna)iam sure i read somthing about it having two sensors...I heard the same thing. Quote Link to comment Share on other sites More sharing options...
Red Lup Gti Posted February 16, 2005 Report Share Posted February 16, 2005 nutters!! check engine light will stay on if u have `de-cat` pipe fitted! there r 2 sensors, first one is just before the `pre-cat` and second is screwed into the cat! powerflow were'nt sure were to do mine in the end but i told them that the light didnt come on lol. U do realise that the exhaust system will be alot louder once u have taken out both these cats!!! Quote Link to comment Share on other sites More sharing options...
Frankie Posted February 16, 2005 Report Share Posted February 16, 2005 You make that sounds like a bad thing... style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Loud pipes save lives! Quote Link to comment Share on other sites More sharing options...
gargoil Posted February 16, 2005 Report Share Posted February 16, 2005 QUOTE(Red Lup Gti)...a lot louder !! style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> Quote Link to comment Share on other sites More sharing options...
Arosa FR Posted February 17, 2005 Report Share Posted February 17, 2005 loud and proud lads thats exactly what i want to hear!!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
tdwindustries Posted February 17, 2005 Author Report Share Posted February 17, 2005 ross you are doing it for me anyway, so better get the tools ready. i am ready for the noise, as long as he looks standard Quote Link to comment Share on other sites More sharing options...
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