Red or silver slide springs?? 0-4000'

[WarriorPilot]

I'm getting mixed messages up here in Ontario,
can someone give me the correct info,
Red or silver Holtzman springs ,0-4000' with K&N's on RX-1 ??

Thanks

 

[SUPERTUNER]

I'm getting mixed messages up here in Ontario,
can someone give me the correct info,
Red or silver Holtzman springs ,0-4000' with K&N's on RX-1 ??

Thanks

When I did the original dynotests on my ECP Air Kits, I tested every spring available from Holtzman. There was literally 0.8 HP difference between the yellow, red, silver and blue springs. I like the silver or blue springs the best.

Freddie

 

[WarriorPilot]

Thanks Freddie ;-)