Upgrading '99 exhaust to '03 S exhaust - 986 Forum - The Community for Porsche Boxster & Cayman Owners

geno · 08-14-2007, 06:54 AM

I have a 1999 Boxster with stock exhaust.

A friend has offered to give me his stock exhaust from his '03 S. I think an adapter is needed (not too costly) -- but before moving forward, I was wondering if anyone had any experience making this modification or had any concerns I should be aware of?

Thanks for your time to reply.

Geno

08-14-2007, 07:58 AM

I dont think the 03S exhaust will make any difference only cosmetic, am i right?

Cloudsurfer · 08-14-2007, 03:09 PM

The 03 exhausts are a bit throatier, however I dont see why it wouldnt be a bolt on affair, as to my knowledge the differences are the mid pipe and headers, particularly that junction, but as far as I know the rear exhaust is the same for all years.

Patrick

eric95 · 08-14-2007, 04:25 PM

You do need an adapter kit. I made a similar upgrade a few months ago.

It's a straight swap.

I'll post the kit number tomorrow.

Tool Pants · 08-14-2007, 05:10 PM

What is the source of the info that a 2003 muffler sound any different than a 2.5 muffler?

eric95 · 08-21-2007, 07:19 AM

Porsche Part #: 000 044 200 11

This is the muffler adapter for 2.5L.

Between 0-3000 RPM there's more volume compared to my stock 2.5L Boxster exhaust.

It's a noticeable difference.

Above 3000 RPM, everything sounded the same.

blinkwatt · 08-21-2007, 08:35 AM

Quote:

Originally Posted by eric95

Porsche Part #: 000 044 200 11

This is the muffler adapter for 2.5L.

Is that the muffler mounting bracket that bolts onto the transmission or some other adapter?

How much was it?

Tool Pants · 08-21-2007, 09:01 AM

This is the Porsche adapter kit for the 1997-1999 2.5. You can find them for about $120.

The adapter originally was so that you could mount the Porsche sport exhaust on a 2.5. But then people figured out it could also be used to mount the standard 2000-2004 muffler on a 2.5.

I can't tell the difference between the 2003 oem muffler and any other oem muffler. Must be my ears.

Boxtaboy · 08-21-2007, 07:36 AM

Quote:

Originally Posted by Tool Pants

What is the source of the info that a 2003 muffler sound any different than a 2.5 muffler?

FWIW, I have heard the difference in tone from a pal's exhaust when he changed from an 01 muffler to an 03. The tone was different. Noticeably nicer raspy growl at lower rpms, no difference in higher rev range, however.