Procharger getting quieter 
Procharger getting quieter
I noticed when I was still on stock shortblock and 9spi my D1SC was pretty noisy @ idle. With my new engine combo the procharger is cranked up quite a bit higher it is considerably quieter @ idle.
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It sounds like you have added just enough load to the blower at idle to where the gears stay meshed, eliminating the marbles in a jar sound. Bob
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How much quieter? Maybe your belt came off? 
Seriously, that's interesting. My D-1SC whines like a tiny jet engine and it has about 9K miles on the head unit.
I have the lovely rattle at idle... I think because I have the "robust" original J bracket and the "awesome" 6-rib set up.
Usually good for some boost loss up top. 
You can almost count on it.
If I lived closer to EPP, I'd probably just drop it off there and say "call me when you have done everything that ATI should have done originally".
8 rib conversion - check!
4.5" intercoolers - check!
ATI Superdamper - check!
crank pinning kit - check!
empty wallet - check!
Otherwise I love my car.
Seriously, that's interesting. My D-1SC whines like a tiny jet engine and it has about 9K miles on the head unit.
I have the lovely rattle at idle... I think because I have the "robust" original J bracket and the "awesome" 6-rib set up.
Usually good for some boost loss up top. You can almost count on it.If I lived closer to EPP, I'd probably just drop it off there and say "call me when you have done everything that ATI should have done originally".
8 rib conversion - check!
4.5" intercoolers - check!
ATI Superdamper - check!
crank pinning kit - check!
empty wallet - check!
Otherwise I love my car.
How much quieter? Maybe your belt came off?
Seriously, that's interesting. My D-1SC whines like a tiny jet engine and it has about 9K miles on the head unit.
I have the lovely rattle at idle... I think because I have the "robust" original J bracket and the "awesome" 6-rib set up. Usually good for some boost loss up top. You can almost count on it.
If I lived closer to EPP, I'd probably just drop it off there and say "call me when you have done everything that ATI should have done originally".
8 rib conversion - check!
4.5" intercoolers - check!
ATI Superdamper - check!
crank pinning kit - check!
empty wallet - check!
Otherwise I love my car.
Seriously, that's interesting. My D-1SC whines like a tiny jet engine and it has about 9K miles on the head unit.
I have the lovely rattle at idle... I think because I have the "robust" original J bracket and the "awesome" 6-rib set up.
Usually good for some boost loss up top. You can almost count on it.If I lived closer to EPP, I'd probably just drop it off there and say "call me when you have done everything that ATI should have done originally".
8 rib conversion - check!
4.5" intercoolers - check!
ATI Superdamper - check!
crank pinning kit - check!
empty wallet - check!
Otherwise I love my car.
