| March 31, 2001 |
Exhaust Back Pressure
Testing the actual back pressure on a 1999 LS1
Z28
This is just the data and not a write up. A write up will follow sometime. Keep in mind according to David Vizard, a street/race car should be at or below 2.2 psi of exhaust backpressure. At anytime if the cumulative back pressure is above 5 psi, the exhaust system needs serious modification.
| Maximum backpressure measured at wide open throttle. | |||
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SS Takeoff Muffler and cutout Zed style cutout |
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| Before Passenger Side Catalytic Converter (psi) | After Catalytic Converters (psi) | ||
| Cutout Closed | 5.0 | 1.4 | |
| Cutout Open | 4.0 | 0.3 | |
The SS takeoff muffler is basically the same as the stock Z muffler.
Web Author: Eric Barger help@installuniversity.com
Copyright © 1999 - 2002 Eric Barger. All rights reserved.
Revised: June 07, 2007.