What's everyone's say on the pulleys being sold out there right now? Any noticed hp or mpg gains?

 

If you read the posts about them, for the most part they dont do much of any thing.

 

The dyno sheets you see claiming 4rwhp are just due to dyno error, you can dyno your car 4 times in a row and get different numbers every time. All they are good for is dimming your lights, near stalling at stoplights, and a pain in the azz install.

 

"All they are good for is dimming your lights, near stalling at stoplights, and a pain in the azz install"

what the heck pullies did you install? i did mine with a spare tire jack, and it took 20 minutes!

and i've never seen my lights dim at idle, my charging is in the upper 3/4 section of the meter, and the only noticable drop is when i turn on my fans with a SLP fan switch!

whether it's worth it or not is up to you. here is a dyno graph showing the gains. you make the decision. i rank it under, every little bit helps, and it doesn't hurt to slow down the accesories to prolong life...

 

and i've never seen my lights dim at idle, my charging is in the upper 3/4 section of the meter, and the only noticable drop is when i turn on my fans with a SLP fan switch![Quote Teke 184]

You've got an M6, A4's idle at 550 in gear. With the A/C on mine would dim, but I didn't have the overdrive alternator pulley. But if you put the alternator pulley on, you're taking away from the underdrive pulley, hence not much gain.

 

WTF? So I'm an M6 guy -- I'll prolly throw in two 12s or 10s later on. Should I have a problem if I throw down all the pulleys?

 

all i have is the crank pulley. no alt pulley for me...

i guess i have noticed a bit of a drop when i have my A/C on...but i use that maybe once a month during the summer so i really don't care.

but i hear ya about the A4 idling lower, just upp the idle with the pcm...wouldn't that mask that problem?

 

As for HP gains, I'd say there is little to none to be gained.

However, I open track my car at the road course and it very drastically saves wear and tear on you powersteering pump.

I have both pulleys and never had a problem with charging.

 

My A4 drops into the red when sitting at stop lights and I have the power and amp series. My M6 just barely fluctuates when I turn the fans on. I am going to pull both sets of pullies off both cars because I don't think the extra strain on the electrical system is worth it. If you are planning any kind of stereo project I don't think I would invest in the pullies. I think the older cars get more benefit from the pullies because they are driving the water pump with the crank also. The extra 1-4 hp is starting to not look worth it to me.

 

i don't think you're gonna want to do it with the plans for a couple of big subs.

you could always put the pulley on, then see what happens when you install the subs. if it drains the power, sell the pullies

 

If you have a stock convertor and bump the idle up to say 800-850 then it creeps at stop lights. It's always something.

 

I couldnt tell you about the HP but i can tell you i went a 9.041 @ 79mph with 2.18 60' in the 1/8th with the only mod being an ASP underdrive pulley. I know some people will say " wow sarcasticly " because everyone here is faster but my LT1 was the only one close to stock running below 9.2's consistently. Mine was a little bit tricky of an install because i had never done it before. Getting the new belt on mainly. But once again, its an every little bit helps mod. I plan on running 8.8's with LS1's in the 1/8th with the pulley, air foil, TB bypass and a catback. I will let you all know how it goes.

 

Here's a question. Are most of the people out there running pullies also running the stock or electric waterpump? I can't see much of a gain using pullies and still using the stock water pump (as I am sure there is a lot of parasitic drag from the water pump), but I would be interested if there is a noticable increase in hp from a pulley and electric water pump change.

 

Stock waterpump is driven by the cam. Pulleys have no affect

 

The waterpump is driven off the cam so the pulleys won't underdrive it. Check out www.ws6.com there's a before and after dyno, not a lot of peak hp was gained but it went up an average(whats really important)of 5hp and 5lbft at the wheels.