So I have my dream exhaust I put together for the S52 but now it's being built for a turbo. I am planning to split the downpipe into a Y and reuse the exhaust but in the back of my head I can't help but think that the right way to do it is to get a huge single pipe put in and be done with it...
If anyone is interested, throw me an offer and we'll see. The exhaust cost around 2 grand to put together but I'd be happy to get back even half of that.
***note: no cats. But you can put in high-flow magnaflow cats in for cheap. Or if like me you have an 87, no need for emissions
Starts with S52 manifolds, front flange was cut and redirected to clear the E30 subframe without any shimming of either the engine or swaybar.
Then to a 2.25" dual, stainless pipe (stainless tip to tip), with an H pipe a few feet from the manifolds.
To a 2.25" dual in/out X pipe huge magnaflow muffler (tight but it fits the E30 heatshields).
To a UUC RSC36 muffler pair. Initially had the resonators but had to remove them to make room for the Magnaflow (obscenely loud without it, now it's just right, ballsy without being obnoxious).
Pics of its history:
quick drive around the block
inside, on track (wait until lap 2-3, first is warmup, but you can judge how it'll sound during normal-ish driving on the street)