GUYZER90 Posted February 24, 2013 Share Posted February 24, 2013 Hi all, Ive just aqquired a 1995 disco 300 tdi auto , vehicle runs and drives very well but the engine just seems to be a bit sluggish compared with the 300 tdi defender i had. The questions are , would it benefit from having the EGR and CAT removed ? And how legal is it to remove the CAT.? If the EGR was removed what happens to the wiring , is it a case of just unplugging it and leaving the wiring there? If they were both removed what other wiring needs to be modified if any? Look forward to the expert advice as allways..! Regards Guy. Quote Link to comment Share on other sites More sharing options...
Tetsu0san Posted February 24, 2013 Share Posted February 24, 2013 If you remove the EGR you can leave the wiring in place as it won't be doing anything anyway. Most people blank off the EGR rather than removing it completely. Another thing you could do is 'tweak' the pump a little. There are plenty of guides around and this will make a big difference to the overall performance. But, you have to remember that although the engines are more or less the same in the Defender and the Disco, the Disco is quite a lot heavier and this would make it feel more sluggish. I think the Disco was the heaviest out of the 110, Range Rover, 90 and Disco. I may be wrong on that though... Quote Link to comment Share on other sites More sharing options...
Boydie Posted February 25, 2013 Share Posted February 25, 2013 Agreed an off the showroom floor Disco is just soooo heavy it reminds me of a popular pre-diet advert however once you remove all the 3/4" thick carpet underlay and padding, replace it and the standard roof lining with 3/8" high density self adhesive rubber insulation (obtainable from any HVAC sheet metal shop) remove the under-bonnet rubber sheeting it gets down to a tad over the weight of the defender 110 and its a better compact body and wheel-base. Quote Link to comment Share on other sites More sharing options...
Igol Posted February 26, 2013 Share Posted February 26, 2013 Had a decatted defender front pipe on mine for the past 4 years and only failed on emissions the last time. This was mainly due to the veg oil I was running it on, acknowledged by the tester, once I was back on full fat diesel she sailed through the test. Quote Link to comment Share on other sites More sharing options...
disco_al Posted February 26, 2013 Share Posted February 26, 2013 could be the auto box, as they sap power, hence the reason for the auto's having the electronic injection pump (fly by wire). you can get them chipped for more power, but as for tuning the pump, you'd need to change the injection pump, injectors and pedal to a manual one. as for removing the egr and the cat, no problems on that one. get a blanking kit from ebay (about a tenner) and a front pipe from a 110, or a non cat 300 tdi and swap them over. diesel mot is just smoke test anyway Quote Link to comment Share on other sites More sharing options...
GUYZER90 Posted February 27, 2013 Author Share Posted February 27, 2013 The injection pump looks the same as the one that was fitted to the 90 ,only it has a small round electronic device on top , which i thought was some kind of position switch. . So is mine an early model with a manual pump.? There are no signs of it being fiddled with before , its a very standard, non tampered with disco.. Regards Guy. Quote Link to comment Share on other sites More sharing options...
disco_al Posted February 27, 2013 Share Posted February 27, 2013 hmmm, has it got a throttle cable? that should narrow it down Quote Link to comment Share on other sites More sharing options...
GUYZER90 Posted February 27, 2013 Author Share Posted February 27, 2013 yes it has a throttle cable on one side of the lever on the pump and a kickdown cable on the ohter. As i said before it has a small electronic device on top that is pluged into the loom that comes down behind thermostat housing. Regards Guy. Quote Link to comment Share on other sites More sharing options...
GUYZER90 Posted February 27, 2013 Author Share Posted February 27, 2013 Oh and it has'nt got an airflow meter. Quote Link to comment Share on other sites More sharing options...
Boydie Posted March 1, 2013 Share Posted March 1, 2013 It seems to me that you have the FIP off a ERG model and installed on your bare bones mechanical 300 TDi what you should have is a cover with a black hose going to the "T" piece on the turbo. shouldnt be too hard to obtain the correct pneumatic FIP govenor cover with said hose and swap it for your electronically operated unit but hopefully other on this forum will have a better idea of whats involved Quote Link to comment Share on other sites More sharing options...
RedLineMike Posted March 1, 2013 Share Posted March 1, 2013 at the moment he doesnt need to do anything, the FIP he currently has will have the pipe connected to the turbo to the boost module on the pump, the electrical pot on the top of the throttle spindle is for the EGR system & simply tells the EGR controller where the throttle is, Quote Link to comment Share on other sites More sharing options...
JimDay Posted March 1, 2013 Share Posted March 1, 2013 Hi Guy you might find this article of interest http://homepage.ntlworld.com/stage1v8/TechnicalDIEGRValveRemoval.htm I have done all this but not got round to doing the de-cat yet I also removed the Inter cooler & cleaned it out & the inlet manifold that was absolutly clogged with soot & gunge took ages to get it all out Jim Quote Link to comment Share on other sites More sharing options...
Nigelw Posted March 1, 2013 Share Posted March 1, 2013 Don't mean to poke in on this but try using acetone on the sooty items, I did my intercooler with it and it cleaned it right out and where ther has been an exhaust leak at the manifold I wiped it over with the acetone a few times and all gone, be careful as acetone is bloomin flammable and if you do the intercooler it needs a good bit of airing before you refit it!!! Quote Link to comment Share on other sites More sharing options...
Boydie Posted March 2, 2013 Share Posted March 2, 2013 Acetone is fine to remove gunk and oil deposits, although I dont know how you would get soot in the intercooler !!!! , afterwards - if you have one - use your very noisy and antisocial leaf blower to give it a good ventilating before you reconnect it, Quote Link to comment Share on other sites More sharing options...
GUYZER90 Posted March 3, 2013 Author Share Posted March 3, 2013 Cheers for all the replies , great help as allways, just have to get the downpipe and the mods will begin. Regards Guy. Quote Link to comment Share on other sites More sharing options...
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