RE: headers

["Marc Brown" <Mad_One@msn.com>]

Putting a car on a dyno can be deceptive.  The results that you see when the 
car is sitting still, are not truely representing what your car does when it 
is moving.  Engine temperatures are much higher when the car is sitting still 
than when it is moving, because air from the outside is pushed through the 
engine compartment while the car is on the go.  So the stationary dyno test is 
probably not the most accurate representation on how much power your actually 
makes.

- -----Original Message-----
From:	owner-jettaglx@igtc.com  On Behalf Of Mark Radelow
Sent:	Monday, August 18, 1997 4:28 PM
To:	jbazzano@tribecatech.com; gti-vr6@dev.tivoli.com
Cc:	jettaglx@igtc.com
Subject:	Re: headers

Regarding the heatshield, I am having a custom heatshield being made for 
my airbox.  It will be removable so I will rent some dyno time and see 
what I see.  If it makes a difference cool...if not, well it isn't 
costing me anything so who cares.  I don't think that exhaust mods are 
really for power.  I think they are pretty much for sound only.  The 
only mods I see that are really performance oriented are anything and 
everything dealing with get a nice cold air flow, getting a high rate of 
flow (K&N oem drop-in does the job nicely), the chip, and _maybe_ the 
Euro T-body.  but from what I have heard the tbody won't work in my OBD2 
GLX.  Save your money and put the rest into your suspension.  This is, 
by far, where you get the most bang for your buck.  The car will feel 
faster with a good suspension because you will be able to do everything 
faster.  The stock VR6 has the ponies to do the job.

OH!! My webpage has had a whole bunch of updates.  I have TSB's up, 
warranty info, and bunches of other stuff.  Definately check it out!  It 
is updating as we speak so give it half an hour or so to get fully 
uploaded.  My firewall at work prevent me from using my t3 connect to 
upload.  Have to use the slow-poke 33.6
Just my opinion, I could be wrong.
Mark Klaus Radelow
VW Jetta Homepage
jetta.aosi.net

>Date: Mon, 18 Aug 1997 14:08:40 -0400
>From: Jim Bazzano <jbazzano@tribecatech.com>
>To: gti-vr6@dev.tivoli.com
>CC: jettaglx@igtc.com
>Subject: headers
>
>with all this intake and exhaust talk around, I thought I'd bring up 
the 
>subject of headers and the vr6.
>
>seems like VW DID do a good job on the stock exhaust , or the 
>aftermarket people just need to work harder, in anycase,do aftermarket 
>headers yeild any increase in power? or are the VW ones already so well 
>designed that its not worth it???
>
>I think we are close to finding the best intake/exhaust combo for the 
>vr6, or at least we know the recipe:
>
>-coldest air in (most power)
>-high flow air filter (most cfm)
>-smooth path into/out of the block (most laminar air flow)
>-headers designed to help evacuate exhaust gasses (better combustion)
>-exhaust/muffler (perfect mix of backpressure for torque and flow for 
>HP)
>
>seems like the mod'ed stock airbox keep's air temp down, anyone try 
>putting a heat sheild around the airbox for even cooler temps? how 
about 
>those hella front air intakes?
>
>K&N seems fine for high flow in the box.
>
>porting & polish must add ponies  by smoothing out the ports
>
>headers?? don't know
>
>exhaust - from what I hear, junking the stock exhaust sounds like a 
>waste of money just for a few extra ponies - IF that- suitcase removal, 
>I might just try that,but can it be put back as easily as it was taken 
>out?
>
>
>jim-


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