Need help deciding which procharger

[80FoxCoupe]

If BOV is vented to atmosphere and you have a serious pulley on, it will be loud at idle.

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[Chris Barnes]

Yep, the BOV is for sure noisy. The old pro flow was not noisy at all. However I thought we were talking about supercharger gear noise, which again in my case is nearly silent.

 

[ahl395]

Funny because my P1X is nearly silent. If I didn't know there was a blower on the car, I wouldn't even notice it. Having an original D1 (oil fed) unit on my old 1989 Fox car made me make the helical decision because that blower was so loud. Perhaps each head unit has it's own signature sound?

Yep, I'm running a Tial Q50. Ditched the pro flo about a year ago. Making about 9.5 psi on a 4.75" Pulley. I'm not saying it's dead silent, but for sure you really have to listen to hear it. At Idle it's nearly undetectable.

Yep, the BOV is for sure noisy. The old pro flow was not noisy at all. However I thought we were talking about supercharger gear noise, which again in my case is nearly silent.

Yeah, I'm referring to the supercharger noise itself. You still have a pretty big pulley on it so that's probably why its quieter. Gotta get a direct port manifold on and drop a pulley size! haha

When I heard the straight-cut gears on video I didnt like it and it sounded like tumbling rocks or marbles inside lol. Once I heard it in person I realized that was much more pronounced on camera than real life and I loved the extra loud whistley jet noises, but it was too late lol.

 

[80FoxCoupe]

Straight cut = everyone looking

 

[Jay-rod427]

Yep, the BOV is for sure noisy. The old pro flow was not noisy at all. However I thought we were talking about supercharger gear noise, which again in my case is nearly silent.

What's crazy is my stg 2 p1x with even the 4.88 pulley the first time I fired it up I was like I thought this was supposed to be quieter with the helical gears. SOOOOOO far from stealth it wasn't even funny. Could hear the blower inside the car clearly at idle/low rpm, and 100 ft away outside no problem at idle. I wanted to open the transmission and verify it was helical because I was not impressed.

Then Erik tells me his personal car can't even hear it running like a few others have said. There is either some that are supposed to be helical gears and aren't, or some massive variation from one to the next.

Worst dump truck with loose marbles in it sound ever was the old F2R of yesteryear. That damn thing just beat the air into submission. Sounded like it was 2 seconds away from grenading the first time we fired it up. Dreadfully awful and bald eagle screaming eargasm at the same time. LOL!

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