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Old 09-30-2006, 09:35 AM   #1
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[QUOTE=...So, by swapping out the headers and the muffler, I gained almost 15 HP and 18 pounds of torque. The "butt dyno" feels it a little, but the ears hear the rumble far more.
...[/QUOTE]

I'm muchos impressed by your results. Am really glad things turned out well, in fact, much better than I've hoped for. I did something similar to yours with my Dansk headers, sports cats and muffler but I didn't believe my results were as good as yours. 15bhp with improvements across the rpm range for a set of headers and muffler on a NA car is nothing to laugh at!

Let the skeptics be silent on this one
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Old 10-05-2006, 08:08 AM   #2
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[QUOTE=clubhead]
Quote:
Originally Posted by ...So, by swapping out the headers and the muffler, I gained almost 15 HP and 18 pounds of torque. The "butt dyno" feels it a little, but the ears hear the rumble far more.
...[/QUOTE

I'm muchos impressed by your results. Am really glad things turned out well, in fact, much better than I've hoped for. I did something similar to yours with my Dansk headers, sports cats and muffler but I didn't believe my results were as good as yours. 15bhp with improvements across the rpm range for a set of headers and muffler on a NA car is nothing to laugh at!

Let the skeptics be silent on this one
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Old 10-06-2006, 09:50 PM   #3
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WoW...there is nothing i can say...

...that has not already been said in the thread...I'm new to the board (will do intros later) but just have to say Holy Cow...I've been around ktmtalk.com thumpertalk.com, and vwvortex.com and never have i seen a thread like this before...just a few questions...

Randell, nice write up and incredible job bitting your tongue while all the flames were blasting past your head...kudos! Anyway, how many miles have you put on your '97 since the install? Are the welds still holding up? No rattles or leaks? I'm interested in the added performance, but drive appx 800 miles per week and just can't have something under there that I have to worry about tackin' up every other month.

Also, anyone out there running one of Che's systems with and EVO intake or even a BMC panel? How about chip programming? Have we seen any results with GIAC? REvo?

Thanks in advance,

--troy
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Old 10-07-2006, 06:17 AM   #4
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Now I Have Cat Bypass Pipes Also

Also, anyone out there running one of Che's systems with and EVO intake or even a BMC panel? How about chip programming? Have we seen any results with GIAC? REvo?

Thanks in advance,

--troy[/QUOTE]
k&n filter ++++++

FABSPEED CAT BYPASS PIPES ALSO INSTALLED,along with che 's great cat back...will be picking up headers from him. well when they are out for 03 2.7
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Old 10-07-2006, 07:24 AM   #5
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Troy, I have only had it on two weeks and put 100 miles on the car. Just enough to fall in love with the extra power and lovely exhaust sound. No new leaks to report!
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Old 10-07-2006, 10:58 AM   #6
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100 mile update...

Thanks Randell...keep us up to date...I'd be interested to now if and when any leaks, rattles, or cracks develop...

cheers,

--troy
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Old 10-11-2006, 06:50 AM   #7
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Hello Everyone,

racer_troy had step up & willing to take this Header Dyno experiment for his 2000' Boxster 2.7L I choose racer_troy due to his Boxster is all stock & can do the Installtion & Dyno next week. I will ship out today & he will keep everyone post with update. Thank you !!



Best Regards,

Che



Quote:
Originally Posted by racer_troy
Thanks Randell...keep us up to date...I'd be interested to now if and when any leaks, rattles, or cracks develop...

cheers,

--troy
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Old 10-12-2006, 10:33 AM   #8
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Quote:
Originally Posted by RandallNeighbour
Troy, I have only had it on two weeks and put 100 miles on the car. Just enough to fall in love with the extra power and lovely exhaust sound. No new leaks to report!
How much more power does it feel like the car has? Is it noticeable in everyday driving?
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Old 10-12-2006, 11:02 AM   #9
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Originally Posted by blinkwatt
How much more power does it feel like the car has? Is it noticeable in everyday driving?
Dude, that first one is a really hard question to answer. I dunno. More power, but not tons more. Just a little more grunt and I get down the road a little faster.

As to the second question, yes, it is noticeable if I am driving it to the store or to the office or taking it out for a spin. I lost no low end torque or HP as is the case with some aftermarket headers.

I think the most fun of all of it is when I go under and overpass and nail it. The sound that reverberates off the walls and freeway above is absolutely de-light-ful!
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Old 04-12-2007, 10:19 AM   #10
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In cab noise

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?
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Old 04-12-2007, 10:42 AM   #11
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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.
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Old 04-12-2007, 11:51 AM   #12
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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.
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Old 04-12-2007, 12:42 PM   #13
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How bad is the resonance? Can I hear a phone conversation in the 2-3k RPM range?
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Old 04-12-2007, 12:53 PM   #14
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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.
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Old 04-12-2007, 01:28 PM   #15
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So hows the power increase with the supercharger? Did it go from kitten to tiger? Or just enough to make you smile?
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Old 04-12-2007, 02:00 PM   #16
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supercharger

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.


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Old 04-12-2007, 01:54 PM   #17
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Quote:
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!
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