66gaza Posted July 1, 2008 Share Posted July 1, 2008 I know virtually nothing about TD5's, but my Dad has one and I have been trying to persuade him to remove the EGR valve. He has asked someone whom he trusts more than me (who can blame him) and he has told him that his EGR valve is already disabled. Is that done by emoving the vacuum? I told him that it was still a restriction in the intake and that he should still replace it. So who is right and why? Gaza Quote Link to comment Share on other sites More sharing options...
western Posted July 1, 2008 Share Posted July 1, 2008 remove it completly & fit a blanking plate/gasket over the hole & disconnect/remove the egr ecu & secure all the wiring out of harms way. Quote Link to comment Share on other sites More sharing options...
66gaza Posted July 1, 2008 Author Share Posted July 1, 2008 remove it completly & fit a blanking plate/gasket over the hole & disconnect/remove the egr ecu & secure all the wiring out of harms way. That is what I am trying to get him to do but he has taken alternative advice telling him that it is disabled and therefore there is no need to remove it. Gaza Quote Link to comment Share on other sites More sharing options...
JST Posted July 2, 2008 Share Posted July 2, 2008 Porny does a kit to repalce the current inlet EGR pipe. even with it disabled there are still parts in there blocking the air intake which could restrict flow. My EGR was disabled 7 years ago but i only recently replaced the intake pipe with a straight through pipe - a much neater job, cant say it made the vehicle any different though. Quote Link to comment Share on other sites More sharing options...
Porny Posted July 2, 2008 Share Posted July 2, 2008 I know virtually nothing about TD5's, but my Dad has one and I have been trying to persuade him to remove the EGR valve. He has asked someone whom he trusts more than me (who can blame him) and he has told him that his EGR valve is already disabled. Is that done by emoving the vacuum? I told him that it was still a restriction in the intake and that he should still replace it. So who is right and why? Gaza You can just unplug the solenoid(s) to disable the EGR... however.... The problem with Td5 EGR valves (and 300tdi for that matter) is that over time the carbon (and sludge) build up prevents the valve from sealing correctly, which results in exhaust gas bleeding past all of the time. If the percentage of EGR gets too high (and is being passed all of the time) it can lead to serious problems - including rapid bore wear, reduced MPG, increased smoke and poor acceleration. Unless the EGR valve is 100% brand new, personally I wouldn't just disconnect it, and rely on the valve to seal. Going on from that... You could fit a blanking plate between the exhaust manifold and the stainless EGR pipe. This stops the EGR getting to inlet manifold, however... On a pre 2002 Td5, the intake isn't 'that' bad; however... the diameter does get reduced, which will lead to a restriction into the inlet manifold which is far from ideal. On a post 2002 Td5, just fitting a blank and not doing anything else is very bad!! A post 2002 EGR valve basically has a throttle blade... if you just blank the exhaust manifold, this valve will still activate when the ECU tells it to (via the two vacuum solenoids) and it will virtually block off the supply of clean air!! If you disconnect the solenoids, this valve will no longer operate, but it will still restrict air flow - especially as it doesn't sit flat when in a dormant state. Personally.... I'd just remove all of the EGR set up (including all the solenoids) regardless of age of Td5. It then is just one thing to go wrong, and will help improve the life of the engine and the sensors (esp. MAP). I would also look at the kits available before you buy them... 99% of the kits supply you a rubber bung, or tell you to use a screw or a rivet to blank the supply off you vacuum pipe. This is ok, but just remember if this bung perishes or falls out you loose servo assistance on your brakes!! My kit comes will a replacement vacuum pipe without the 'T' for the EGR solenoids If you want to be more flash... Pete Bell (Bell Auto Services) and myself are the only tuners that I know of who can disable the EGR in the mapping on the ECU regardless of model or specification. In reality though, this isn't needed, as although the ECU will log a fault to say the EGR is faulty - but it will not put the MIL on, so doesn't really matter. For a bit more info on EGR - http://irbdevelopments.com/EGRexplan.html Ian Quote Link to comment Share on other sites More sharing options...
Guest diesel_jim Posted July 2, 2008 Share Posted July 2, 2008 Having just fitted one of Porny's kits to my project110, i can say what good quality stuff it is, and the brake pipe is indeed included. 10/10! Quote Link to comment Share on other sites More sharing options...
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