[Landseer]

The 16V cast iron is restrictive if not port/polished like your AFM was.
(see Porken threads on rennlist)

MSDS headers prevent access to the clutch.

Answer is 85/6 32V SS pipes on 16V.

I dumpstered existing installed MSDS for that on 84 Euro.

HP wasn't a factor in my case, replacing MSDS was the driver.

With 32V SS, I can easily mate to stock 928 cats. (with a little bit of pipe heat / bend)


In my case, Euro 16V engine, 32V SS headers, 32V cats. Flowmaster Y transition into 3 1/4 inch single. Spintech resonator; single 3 1/4 inch out.

Nasty sound. (OK, like a mustang)

PCA guys got a kick out of it on the autocross course last Sat (at Tire Rack HQ).