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ohsobad_chevy
08-21-2007, 04:42 PM
Anyone put the sparks full system with big core on their YFZ's. What kind of results did you see? I am just curious if I should get the big core or the standard core and does anyone know the true difference in performance?
:cool:
Ride1Rob
08-21-2007, 08:25 PM
From what I've been reading, unless you have motorwork you're wasting your time getting the bigcore. It's not for stock motors.
400-416EX
08-22-2007, 09:33 AM
I love my Sparks, and i had it on before i had the motor done
ohsobad_chevy
08-22-2007, 10:03 AM
Originally posted by 400-416EX
I love my Sparks, and i had it on before i had the motor done

Is yours the big core version, or the standard core?
K_Fulk
08-22-2007, 03:56 PM
I know my big core was ear splitting loud. It was the best top end pipe I've had. Lacked on the bottom with my motor being stock.
cchrider
08-24-2007, 12:44 PM
The way I understand is exactly what it says. The "big core" has a bigger core, therefore your going to have more on top end. Which would be better for sand dunes, drag racing, or flattrack. The standard core is a smaller core so you would get more bottom to mid range power. That is the way I believe it is.