improve Boxster engine soun

[skullbocks]

Hi,

I would like to have some advise on how improving the engine sound on a Boxster 98.

1- Is a performance air intake improve sound or only perf ?

2 -have you some suggestion on a muffler ?

3- i bought this header on ebay :

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...em=270328380132

Any feedback on those aftermarket header ?

thank you for your time.

[White987S]

Be careful of potentail "droan" issues when selecting a louder exhaust.

[Elliottc26]

Hi,

I would like to have some advise on how improving the engine sound on a Boxster 98.

1- Is a performance air intake improve sound or only perf ?

2 -have you some suggestion on a muffler ?

3- i bought this header on ebay :

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...em=270328380132

Any feedback on those aftermarket header ?

thank you for your time.

Check these out for some ideas...

http://uk.youtube.com/watch?v=zv_ljlNOe7M

http://uk.youtube.com/watch?v=KzEcEUt_aB8

Really it is the last part of exhaust for sound...high flow manifolds/headers allow more gases to escape the engine quicker allowing new air in...therefore, more HP...I fitted high flow manifolds and now get a deeper sound...???

Edited January 19, 2009 by Elliottc26

[pomocanthus]

Hi,

3- i bought this header on ebay :

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...em=270328380132

Any feedback on those aftermarket header ?

thank you for your time.

I bought same headers on eBay from same seller over a year ago (for much more than what you paid). A couple of words of advice: make sure you tighten the cap on the "unused" O2 sensor ports before installing. I was so excited to install headers that I didn't check these and one fell off during morning commute; talk about LOUD. I also suggest that you spend an extra $30 to buy the OEM header to block gasket from your local dealer. The gaskets that come with the headers can be leaky. Other than this, it was worth the money. There was less of a backed up air sound and more of a whooosh everytime I accelerate.

One more thing, be aware that these headers provide a challenge when you have to replace the thermostat. One of the tubes block straight access to one of bolts for the thermostat housing. I had to remove the passenger side header recently to replace my thermostat.

I also bought a less restrictive muffler. It sounds better at high RPMs but between 2-3000 rpm, it sounds like a Civic with fart pipes. This also just happens to be rpm range at highway cruising speed. I am going back to OEM but using S exhaust because I hate the single oval outlet of the non-S muffler.