Sorry if this has been posted already.

These dyno numbers are on a Z400 with Edelbrock Pumper carb, a JE Pistons 12:5:1 piston and a K&N filter with a Pro Design mount, sans lid. Results from ATV Rider pipe shootout. HP=SAE Horsepower, Torque=SAE Torque(ft-lb)

ALBA RACING

Price: $349.99
Max HP: 40.4
Max torque: 27.5

BARNUM'S PRO PRODUCTIONS MUFFLER AND HEADER

Price: $259 muffler, $225 header.
Max HP: 40.4
Max torque: 27.4

BIG GUN RACE SERIES

Price: $479.95
Max HP: 41.3
Max torque: 27.9

DG STAGE 3 XCCELERATOR

Price: $324.95
Max HP: 40.3
Max torque: 27.4

DUNCAN RACING FAT BOY 4

Price: $499
Max HP: 39.1
Max torque: 28.4

FMF TITANIUM 4 AND POWERBOMB HEADER

Price: $799
Max HP: 40.0
Max torque: 28.4

JARDINE RT-FOUR

Price: $504.95
Max HP: 41.1
Max torque: 27.8

PRO CIRCUIT T-4

Price: $399
Max HP: 38.2
Max torque: 27.9

WHITE BROTHERS E-SERIES RACING SYSTEM

Price: $269.95
Max HP: 40.5
Max torque: 28.2
Note: Since the test, White Brothers has superceded this pipe with a next-generation design that retails for $695

YOSHIMURA TRS FULL-TITANIUM PRO EXHAUST

Price: $720
Max HP: 41.6
Max torque: 27.9

 

Do you have any numbers for the HMF or CT pipes. I would really like to know.

 

ct have dyno figures on there own site www.ctracing.com