#3128 - 08/26/0902:01 PMRe: Team ZR-1 X-Pipe project
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Here is results of before the NFW exhaust was installed and then with it on. This is with the full length design with the tailpipes.
Weather was 85 degrees adding 1,500 feet to the 4,000 feet elevation tests were done at Notice the lower torque comes up sooner and faster now with the end to end system being 3 inch
Team ZR-1 True Custom Performance Tuning Teamzr1.com
#3133 - 08/30/0903:54 PMRe: Team ZR-1 X-Pipe project
[Re: teamzr1]
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Design testing of end of tailpipes 2,5 and 8 inch longer then in design 2. Each additional length to bring end of tailpipes further away from underside reduced sound level in drivers are from mid 80s DBA to 78 DBA at idle but no loss to sound level at the end of tailpipes.
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#3273 - 01/23/1009:31 PMRe: Team ZR-1 X-Pipe project
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Final testrun of the NFW Team ZR-1 custom exhaust design with the double wall end tips which are stainless steel Inlet is 3 inch with 4 inch outlet.
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#3294 - 02/18/1005:19 PMRe: Team ZR-1 X-Pipe project
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Winter test of our NFW exhaust design Weather 36 degrees and cloudy. Windows up and radio on and off to see if internal exhaust sound was at a proper dBA level.
Part throttle to WOT
WOT
Recorded performance data during the WOT run in part from zero to 110 MPH
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#3297 - 02/28/1005:49 PMRe: Team ZR-1 X-Pipe project
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Team ZR-1 Corvette Racers NFW custom exhaust test at 60 degrees and windows closed.
Part throttle
WOT run
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#3298 - 03/01/1004:37 PMRe: Team ZR-1 X-Pipe project
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Here is idle with windows open and then closed Measuring sound at the tailpipe tips is 94 dbA where in drivers area sound level is only at 80 dbA with windows open and 77 dbA with windows closed
Here is stop/go city driving that includes both windows open, closed, drivers or passenger window open or closed, radio on and verbal talk Weather 55 degrees and cloudy
Launch from a dead stop :
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#3307 - 03/14/1001:00 PMRe: Team ZR-1 X-Pipe project
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This is a cold start idle. Weather is only 42 degrees so normal to see water vapor until everything gets up to operating temp
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#3338 - 04/18/1002:02 PMRe: Team ZR-1 X-Pipe project
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70 degrees, windows closed, 4,000 feet elevation, up to 160 MPH
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#4206 - 09/17/1810:51 AMRe: Team ZR-1 X-Pipe project
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H vs X pipe exhaust system
Again in either case you want them to be located as close to collectors as possible
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#4334 - 05/25/1903:53 PMRe: Team ZR-1 X-Pipe project
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Compare after 10 years of my custom NFW exhaust design on July 5th 2019 Bullet mufflers used still sounds good, has not degraded over these years
Weather 80 F Degrees, A/C off and windows closed
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