Is this True
12-03-2011, 08:50 AM
#1
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Is this True I have been thinking about adding a under-drive pulley but I've heard from a few people that it's not good to run the pulley with having a sound system. Is that true? What do you guys think can I not run a pulley because of the sound system? 
12-03-2011, 09:44 AM
#2
Yes,, if you are running a big setup with a large amp, and speakers that will draw quite a load on the charging system. The underdrive pulley slows the accessory system down, which means less power to run components, When you figure that GM gave these cars an alternator that supplies X amount of capacity, and you throw High draw audio components at it, You may be fine, but if you slow the system down and still throw those components at it, It a safe bet you will have trouble.
The real question is why are you wanting the UD pulley, If its performance I can tell you this, Performance and Big audio dont go together, when You figure the system will add a considerable amount of weight to the car. You would probably gain the same result from removing the audio equipment as you would from the UD pulley.
However The UD pulley will help the egine revv a littel quicker.
The real question is why are you wanting the UD pulley, If its performance I can tell you this, Performance and Big audio dont go together, when You figure the system will add a considerable amount of weight to the car. You would probably gain the same result from removing the audio equipment as you would from the UD pulley.
However The UD pulley will help the egine revv a littel quicker.
12-03-2011, 10:30 AM
#3
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Yes,, if you are running a big setup with a large amp, and speakers that will draw quite a load on the charging system. The underdrive pulley slows the accessory system down, which means less power to run components, When you figure that GM gave these cars an alternator that supplies X amount of capacity, and you throw High draw audio components at it, You may be fine, but if you slow the system down and still throw those components at it, It a safe bet you will have trouble.
The real question is why are you wanting the UD pulley, If its performance I can tell you this, Performance and Big audio dont go together, when You figure the system will add a considerable amount of weight to the car. You would probably gain the same result from removing the audio equipment as you would from the UD pulley.
However The UD pulley will help the egine revv a littel quicker.
The real question is why are you wanting the UD pulley, If its performance I can tell you this, Performance and Big audio dont go together, when You figure the system will add a considerable amount of weight to the car. You would probably gain the same result from removing the audio equipment as you would from the UD pulley.
However The UD pulley will help the egine revv a littel quicker.
12-03-2011, 09:38 PM
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I run a 10% UD on a LS6 (stock alt). Running a Kicker 1000 amp, 10" solo classic, and set of QS 6.5 components with no problems at all. No cap, just good quality wire and the big 3 covered.
