gprosser

Hi

I've just picked up a 2002 996 4S, without sports exhaust.

When maneuvering at parking speeds, the engine note changes substantially to a note that i can only compare to if it had a sports exhaust fitted. is this normal - does the engine mapping change when on load at these low speeds?

Thanks

Gareth.

Dennis C

Are you sure you don't have sport exhaust? Some of the early 996 cars had the OEM sport exhaust system without a button on the dash to deactivate it like the later cars and the current cars.

gprosser

will the VIN number show that? is their a VIN decoder on the forum?

Zookie

Really?

Dennis C

That's what I've been told. I wouldn't have believed it unitl I talked about it with another C4S owner who had that configuration from the factory.

Dennis C

I thought there was one at http://www.autoatlanta.com/.

I haven't used it, but I believe others on this board have. You can also contact Loren if you're a contributing member of www.renntech.org and he can help you with this.

pongobaz

I think that was on 1st gen 996's with the 3.4l engine. I don't believe that any of the factory PSE equipped C4S's would have shipped without the switch.



But I could be wrong.

Dennis C

That could be the case... I'm not really sure. I think the VIN check should provide the answer.

If he doesn't have sport exhaust, what else could it be? Perhaps some kind of aftermarket exhaust?

pongobaz

Maybe a PSE that was dealer installed without the switch? But the fact that it apparently has the speed actuation for euro noise regs between 50-70kph means that it is somehow wired in. Could someone have installed the PSE system from a 3.4?

dotframe

maybe some good pics of exhaust? Make sure you get a good shot of both edges of the mufflers.

gprosser

Renntech VIN deoder shows no options at all - am I missing smthg?

Dennis C

The renntech online decoder is very basic. For a list of options, you have to email Loren. I think you may be able to get this by emailing the VIN to the folks at www.suncoastparts.com also.

ClickClickBoom

I have a 2002 C4S that has factory PSE and no switch on the dash.

pongobaz

Well, there's our answer!

This intrigued me enough, that I search all the emails I had 6 years ago when I was looking for an 2002 or 2003 C4S. Sure enough, there was on that the owner claimed had the factory PSE, but the dash had no switch...I don't think I believed him at the time.

Topaz330ci

Simple: just take a picture of your mufflers and post it here. Take a few...