Well . . . .i personally think its a waste of time ,Optimus idea is the best and one that most do , the valve itself is an engineering folly , the idea being that waste ignited exhaust is hot and double burnt hence reducing emissions . . . .the truth is it gunks up your inlet manifold hence increasing pollutants and decreasing engine performance [just undo any valve or inlet manifold after 20k of motoring to see how much gunk is blocking the engine breathing]. . . .so to cut to the chase ,Optimus idea is the best. . . .Do these make any difference or are they a waste of money? Mine has already been remapped by a previous owner.
Hi, I suppose it'll be different for each car, but it made a big difference to mine. The week before I ordered mine I did the disconnect & plug the vacuum hose trick & it felt a little better on lighter throttle settings, but when I replaced the whole unit with a bypass the car feels much more lively & responsive. My car had done 54,000miles & the original egr was quite sooted up which probably explains the difference, but I definitely recommend one.
ok found guy selling these but do they come with everythink to fit it and fitting instuctions only in picture on ebay looks like a bit of tube lol thanks
Yer dunt have to advertise on this forum Ron [we knows yer product is good]A lot of us with the same engine in Rover 75s and ZTs fit these, with equally good results, especially if tuned (with a Synergy of course).
Ron
Yer dunt have to advertise on this forum Ron [we knows yer product is good]