[DeTomaso] ansa guts

[Will Kooiman]

My memory is:

The mindtrain exhaust was ear splitting loud and higher pitched.
The Magna Flow's were lower pitched.  These are the PI mufflers on Steve's
car.
The gutted Ansas were only slightly louder at idle, but higher pitched and
throatier.  They make the car sound like it has a larger cam, even though I
don't think those cars had larger cams.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of John Taphorn
Sent: Saturday, March 10, 2007 12:25 AM
To: David_Bell at oxy.com; detomaso at realbig.com
Subject: Re: [DeTomaso] ansa guts

David

Ideally, Gray will chime in and set the record straight.  Your yarn is 
pretty convincing though. Of course, I pulled the data from our Dyno Day 
spreadsheet.  We didn't qualify Gray's exhaust as other than stock and I 
seem to recall surprise at the high end numbers.  You car's gutted Ansa 
results were similar to mine.

JT

----- Original Message ----- 
From: <David_Bell at oxy.com>
To: <detomaso at realbig.com>
Sent: Friday, March 09, 2007 11:50 PM
Subject: Re: [DeTomaso] ansa guts


> My memory of the sound measurement exercise during the dyno day is
> slightly different - though occasionally I've been known to completely
> disremember things so you can't necessarily take this to the bank.   But
> I 'think' that the 'stock' GTS exhaust in JT's table was actually a
> remanufactured system that Gray Gregory bought from Gary Hall.  I talked
> to Gary at TWS one year when he brought out his grabber blue 'POPCAL'
> car to run at the track.  I liked the POPCAL sound so much that I asked
> Gary about it.  He told me that the GTS exhaust systems he sold were
> stockish Ansa mufflers that had been gutted and put back together.  I
> wasn't sure exactly what he meant by 'gutted', but at any rate that's
> where I got the idea to try it on my car.  I ended up getting some more
> details from Tony DiGiovana, who'd actually done it to his car, before I
> pulled out the die grinder and chopped mine up.
>
> Anyway....the stock GTS exhaust measurement may actually not be 'stock'.
> My ear tells me that at WOT the gutted mufflers are significantly louder
> than before the surgery.  But at idle and normal driving they are maybe
> only slightly louder, but have a meaner sounding growl (whatever that
> means).
>
> YMMV
>
> Dave Bell (was bored in Abu-Dhabi, currently bored in Oman, soon to be
> bored in Qatar)
>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>>>>
> Garth I do not have a sound clip. The exhaust noise is throatier and
> only slightly louder. The modification helps minimize the chirping noise
> often heard with the GTS. Space City Panteras measured sound levels at
> idle and full throttle for various exhaust systems.
> A sample follows -Idle/Wide open in db
> Gutted GTS 94/118
> GTS 84/119
> Big Bore 93/121
> Magna Flow 89/120
> Mindtrain 98/122
> The measured sound level difference between a gutted and stock GTS was
> insignificant; although, it seems louder subjectively.
>
> JT
>
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