Performance Exhaust and Header for Boxster

[kingsilver]

I to have the exhaust from Che, and have to say I have been very pleased. Only problem I have is the in cab noise between 2k and 3k. Any ideas on how to deaden the sound in the cab?

[mn box s]

roll up/down windows j/k. I wore ear plugs in my last car. Didn't think the sound was bad, I can't even hear the exhaust crusing in sixth on the freeway.

[RandallNeighbour]

The cabin noise you hear is called 'resonance.' The way to reduce it is to stay above 3k rpm... bad excuse for a solution, I know! But most of the 2 chamber mufflers out there cause resonance in this rpm range.

[blinkwatt]

How bad is the resonance? Can I hear a phone conversation in the 2-3k RPM range?

[RandallNeighbour]

I can hear someone on the phone when it's at its worst, but I prefer not to talk on the cell phone while trying to shift and steer with both hands so it rarely happens unless I'm cruising down the freeway in 4th or 5th.

Some people just can't tolerate any resonance at all and this muffler is simply not a good choice for them.

I always thought the boxster's exhaust was equal to my Lexus, and I've accidentally redlined once or twice when the radio is up and the top is down because I could not hear the engine.

Che's headers and muffler sure do take care of that now!

I absolutely love overpassess and tunnels. I downshift and really punch it and the reverberation against the walls and cement above is wonderful. Makes driving around on the freeways in Houston a lot more fun.

And a side benefit is that you can set off car alarms in parking garages if you work at it a little (you have to do a lot of revving, so if you're trying to be nice you won't be doing it accidentally).

I think I'm going to tape a little mic onto the back of my bumper and record my exhaust sound onto my laptop and post it on my web site so everyone can hear it.

So hows the power increase with the supercharger? Did it go from kitten to tiger? Or just enough to make you smile?

[Gary in BR]

I have had the supercharger installed for 2500 miles, it is amazing, the car just pulls and pulls. I am getting it dynoed this coming week, the way I look at it I am running around 300 hp on the lightest boxster made.

It runs!!!


The car is still very drivable, I just got back from a 1800 mile round trip. Gas milliage is about the same, I stayed about 80 the whole way. Getting on the interstate is alot more fun.


Gary

[Gary in BR]

I was wrong, I spoke to the shop that installed everything, the headers where custom mafe to fit around the supercharger and the muffler came from someone else. That is the reason I removed the video from this thread I did not want to post the wrong sound files.

The car hauls!!

I don't like posting names of companies on boards that are not sponcers, I will happily tell anyone who did the work, just pm me.


Gary

[blinkwatt]

Originally Posted by Gary in BR

I just had the setup installed on my car, I am not positive if the headers are Ches or not.

What was the eBay Seller I.D. that you bought the headers from?

I bet your car hauls a55!