MadIceV8

iTrader: (12)

Back in May of this year I made a custom fan shroud for my Procharger setup. I am running a Spal 16" and 9" pullers. While they work very good, they are quite loud when they are running at high speed. Was wondering if that was normal?

Checked to make sure nothing was rubbing and did not notice anything since the fans are offset away from the aluminum shroud.

Tally TransAm

iTrader: (17)

i dont know about spals but my derales sound like some sort industrial ventilation system coming online when they kick on. they are loud as ****

99bluefirebird

iTrader: (8)

My spall 16" is definitely louder than stock but nothing too bad. I can barely hear it kick on while idling.

MadIceV8

iTrader: (12)

Tally TransAm - That about describes mine when both are on at full. You can easily hear them within a cars distance.

NightHawk

iTrader: (1)

Reminds me of that Xtreme 4x4 show, he put a single Spal pusher on an International Harvester Scout and the fan was rediculously loud...so much so that the other scout guys were giving him hell about it. Sounded like a constant low pitched wizzing sound.

Urban Legend

iTrader: (5)

I could not really hear mine. I could hear the mondo bypass valve venting to the atmposphere. Thats probably why.

Unstang

iTrader: (26)

They are loud, they work well.