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Impression: Jetex exhaust

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[gti-vr6] Jetex exhaust review "Michael Carlson" <m-carlson@home> Sun, 28 Oct 2001 22:01:41 -0600
Re: [gti-vr6] jetex exhaust Merphead19@aol Fri, 18 Jan 2002 01:59:05 EST
Re: [gti-vr6] Jetex exhaust review and driving impressions Ian Frechette <frechett@rintintin.colorado> Mon, 08 Jul 2002 10:37:16 -0600
Re: [gti-vr6] Jetex exhaust review and driving impressions Ian Frechette <frechett@rintintin.colorado> Mon, 08 Jul 2002 12:43:28 -0600

From: "Michael Carlson" <m-carlson@home>
To: "GTI VR6 Mailing List" <list@gti-vr6>
Subject: [gti-vr6] Jetex exhaust review
Date: Sun, 28 Oct 2001 22:01:41 -0600
Okay, I've tried the Techtonics Tuning 2.5" stainless steel exhaust with 2
resonators, a venturi, and a resonated tip, and it *still* resonated too
loudly in the cabin to be an acceptable solution for my daily driver GTI

I have since purchased and installed the Jetex 2.5" stainless steel cat back
exhaust ($583 including shipping from New Dimensions).

So far, I'm very pleased with the Jetex exhaust.  It's *much* quieter than
the TT, yet is still louder than stock to let you know it's there.  Think of
the TT at half volume or less.  It has a nice, sporty tone when you get on
it, yet maintains a civil volume level inside the car.  I'll try to get some
in-car video of the Jetex soon-ish.  In the meantime, video of stock and TT
exhausts can be found at <>.

When the system is cold, is as quiet as the stock exhaust.  Once it warms
up, the volume increases, as the TT did--but is much quieter than the TT.
Likewise, conditions that caused the TT to get louder will also cause the
Jetex to get louder (i.e. going up a small hill in 5th, romping on the gas
pedal, etc).  However, the louder sound is NOT accompanied by the in-cabin
resonance I got with the TT.  The louder tone is not bothersome, and is
easily drowned out by the stereo at low to moderate volume.  Holding a
conversation while underway is not a problem.  Traveling at speed on the
highway/interstate is just as comfortable as the stock system, yet has a
nice growl when you get on the gas.

Performance gains seem to be on par with the 2.5" TT exhaust I had
(butt-dyno measurements only).  My DSR 256 cams seem to breathe nice and
freely now, just as they did with the TT.  The stock exhaust did seem to be
a bit restrictive, and both the TT and Jetex exhausts feel like they've
improved performance.

I had my trusty independent VW mechanic do the install.  He didn't complain
of any difficulties, so I guess the installation went as smoothly as the TT
install.  Fit and finish on the Jetex system appear to be quite good.  The
stainless steel on the mufflers and nice twin 80mm round tips is polished
and shiny.  (I hope to get some pics up on the web site soon-ish, too...)

In conclusion, I'd say the TT exhaust offers the best value when considering
performance versus cost.  However, if your car exhibits the dreaded TT
drone/resonance between 2k and 3k rpms (or if you fear it might) and don't
care for that, shelling out some more bux for the quieter Jetex exhaust is
what I'd recommend, since it appears to perform just as well as the TT at
half the volume or less.

Mike Carlson
'95 GTI VR6
'84 Scirocco Wolfsburg Edition

From: Merphead19@aol
To: graffix000@hotmail, list@gti-vr6
Subject: Re: [gti-vr6] jetex exhaust
Date: Fri, 18 Jan 2002 01:59:05 EST
Any other jetex owners speak up!

'98 silVR6 

From: Ian Frechette <frechett@rintintin.colorado>
To: list@gti-vr6
Subject: Re: [gti-vr6] Jetex exhaust review and driving impressions
Date: Mon, 08 Jul 2002 10:37:16 -0600
Davide Lodovichi &lt;&#100;avide&#64;; wrote:

>>It arrived in the original box they ship it in from Sweden.   Unfortunately
>>they don't pack it very well so all the metal parts were banging into
>>each other so there's some scratches in the black finish but then
>>again, it is something on the bottom of the car so so what.   I'm
>>surprised all the parts were still in there. Other than that.. Very clean

>Great review.  I did notice on the muffler and rear piping that there was a 
>dent or two.  Is that from the quality of the photos or are they functional?

Ya, I thought those were dents too and called.   Apparently eveyrone does.
They're functional.
They keep it from rubbing on the underside of the car where it goes
over the axle, and again keeps it off some little bracket that hangs
down near the muffler, which is a bit fatter than the stock one.


From: Ian Frechette <frechett@rintintin.colorado>
To: list@gti-vr6
Subject: Re: [gti-vr6] Jetex exhaust review and driving impressions
Date: Mon, 08 Jul 2002 12:43:28 -0600
Jason Martin &lt;&#106;martin7&#64;optonline<img src=/i/dn.gif border=0 width=35 height=15>&gt; wrote:

>Don't those "indentations" impede the flow of exhaust gases? I always
>thought the main advantages to an aftermarket exhaust were the mandrel bends
>and, thus, constant diameter throughout the system.

Dunno.  Seems to work fine.  Or it may be why this system
doesn't seem to lose so much torque down low like the TT exhaust
which just feels gutless under 3k rpms up here.


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