Spohn 503 User Manual
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6. The passenger's side. Repeat #2, #3, and #4 instructions on the passenger's side. Use
the slotted hole in the rear mounting plate to position the SFC fore/aft until the front end of
the SFC is butted tight against the front subframe hump (just behind the front wheel well
area).
7. It may be necessary to adjust your exhaust system to allow proper clearance between
your y-pipe and the SFC's main shaft. To do this, loosen all the connections from the y-pipe
to your manifolds/headers, and to your CAT. Then position the y-pipe to a point where there
is adequate clearance between your exhaust and the SFC. Brace the exhaust in that position
(or have someone hold it there) and re-tighten all of your exhaust connections.
8. Installing the "Y" piece on the passenger's side. The "Y" piece for the passenger's side is
the longer of the two short pieces you received. The reason we keep the Y pieces loose is to
allow for an easier install, and to allow you to position the passenger's side Y piece with
adequate clearance from your CAT and exhaust. Every car and exhaust is different, so
keeping these loose allows you to position them in the best way for your set-up. On the
passenger's side you want to lay the Y piece on TOP of the main SFC shaft (not butted
against the side like the driver's side Y piece was). Position the end of the Y piece so it is
butted flush against side of the subframe in the area of the transmission crossmember. The
Y piece should be as close to the floor pan as possible to allow maximum CAT clearance.
(On some cars it may be necessary to remove the CAT heat shield).
Installation pictures can be viewed at
type 503 in to the search
field.