I notice a lot of guys going to negative backpressure EGR's after installing low B/P exhausts, but nobody has ever seems to have posted any part numbers.... the advice typically justs seems to be one of two things: "Get one for a TBI truck" - of which a dealership had 4 different valves listed... or "Get any negative BP valve" of which there's 20 listed....

So here is what I have finally gotten to work and if this disappears into the shadows cool, but maybe someone will find it in a search.

GM Valve 17087196 - about $105
GP Sorensen Valve 779-2324 with ring # 56 - about $40 at any parts store.

Both have worked great, and excuse me if this has been posted before.

 

Thanks for the info. I will add the PN's to one of the stickies.

 

I don't think it has, good work. When I had to get a new EGR valve for my car, the stock replacement AC Delco EGR valve was a negative backpressure unit. It's GM part number 17113496 or AC-Delco PN 214-5575.