JBA does extensive testing of their products and we have included popular dyno charts from these tests.
PLEASE NOTE that dyno results can vary. Most of these tests were done in San Diego, California at sea level. Atmospheric changes, temperature, and other parameters will change the power levels from any engine. What you should look at is the average gains, and area under the curve. Your results may vary.
Chevrolet
5.3L Silverado dyno test of JBA Headers, Exhaust and Ignition Wires
5.7L 1999 Chevrolet Truck dyno test of JBA Headers and Ignition Wires
5.7L Chevrolet Camaro / Pontiac Firebird dyno test of JBA Headers
6.0L Silverado HD dyno test of JBA Cat4wardŽ Headers and JBA Exhaust
Dodge
5.7L HEMI 2003 Dodge Ram dyno test of JBA Cat4wardŽ Headers
NEW 5.7L HEMI 2006 Charger/Magnum dyno test of JBA Exhaust System
NEW 5.7L HEMI 2006 Charger dyno test of Headers and Exhaust
NEW 6.1L SRT8 2006 Magnum dyno test of JBA Exhaust System
8.0L V-10 Ram dyno test of JBA Cat4ward Headers
Ford
NEW 4.6L 2005 F-150 - JBA Cat4wardŽ headers and JBA exhaust
NEW 4.6L 2005 Mustang GT - JBA long tube headers, H-pipe and exhaust
NEW 4.6L 2005 Mustang GT - JBA Cat4wardŽ headers and JBA exhaust
4.6L 2v Mustang GT dyno - JBA mid-length headers, h-pipe and exhaust
4.0L 2004 Ford Ranger - Headers, exhaust and ignition wires
4.6L 4v 03 Cobra dyno test of JBA Headers and JBA Exhaust
4.6L 4v Cobra dyno test of JBA Headers
5.4L Lightning dyno test of JBA Headers
6.8L V-10 F-Series dyno test of JBA Cat4ward Headers
Mustang and Ford Magazine 5.0L Header shoot-out
Nissan
5.6L Titan dyno test of JBA Headers & JBA Exhaust System
Pontiac
NEW 5.7L 2004 Pontiac GTO dyno test of JBA Headers & ignition wires
Toyota
2003 4.7L Tundra dyno test of JBA Headers
NEW 2005 4.7L VVTi Tundra dyno of JBA Headers and JBA Exhaust
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