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In a message dated 98-03-15 11:00:01 EST, gludwick@csi.com writes:
<<
System HP Torque Sound
Stock 161.9 227.9 very quiet
Borla 171.5 243.9 quiet at idle;low brumble under load
Gibson 170.5 242.4 quiet idle; deep,smooth note under load
Hedman 171.1 243.6 dull throb at idle; steady throaty sound under
load
Jardine 175.4 246.1 low brumbly sound at idle; smooth rumble
under load
Test mule was 97 CK1500, all dual rear exit, except Gibson (single passenger
side)
Measured on K&N's dyno. Otherwise totally stock Vortec 5.0 V8
Word of advice: Don't obcess on HP gains...you'd never know or feel the
difference between 171 & 175 HP.
Gary Ludwick
>>
Verrry interesting. At least with a Chevrolet. The torque gains are
considerable with any of the systems. I wonder what my own 3 inch Magnaflow
cat back system would show up as? That was the first mod I made to my '98 V8.
Just turned 2,000 miles. It appears that ANY exhaust system running cat back
is a good one according this article. Just a variation in how good.
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From: Gary Ludwick <gludwick@csi.com>
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Subject: DML: Exhaust system testing.
Date: Sun, 15 Mar 1998 10:56:08 -0500
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Here are results from a 4 system shoot out in May "Sport Truck" Magazine:
System HP Torque Sound
Stock 161.9 227.9 very quiet
Borla 171.5 243.9 quiet at idle;low brumble under load
Gibson 170.5 242.4 quiet idle; deep,smooth note under load
Hedman 171.1 243.6 dull throb at idle; steady throaty sound un=
der
load
Jardine 175.4 246.1 low brumbly sound at idle; smooth rumble
under load
Test mule was 97 CK1500, all dual rear exit, except Gibson (single passen=
ger
side)
Measured on K&N's dyno. Otherwise totally stock Vortec 5.0 V8
Word of advice: Don't obcess on HP gains...you'd never know or feel the
difference between 171 & 175 HP.
Gary Ludwick
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