How effective is an Underdrive pully?

What would be the better mod: underdrive pully, or new gears?

 

Out of those 2, gears by far.

 

Even though i am using the stock carrier? Should i just wait till i can afford a 12 bolt?

 

Gears will still be more effective...even in the 10-bolt. However, I've had my ASP pulley on for 4 years with no problems and it was probably worth the 8-10rwhp advertised.

 

most gains....gears

easier to install....pulley

you probably won't feel the gains from the pulley, you'll definaately fell the gains from the gears, but you'll also need to get it programed to change the shift points or speedo...so the cost is alot more

 

Good input fellow, my ASP pulley is on the way, it will complet the job.


Arnoli

 

if you can its a good investment.i wish i had done this instead of fixing my 10 bolt over and over.

 

i think ill just do both gears and a pully...

i cant afford the 12 bolt yet, but ill just start saving now. at least ill have an extra set of gears in the garage

 

I did both and vote for gears by far. A little more money and time involved though.

 

do the underdrive pulleys give less power to the AC and stereo? I want one but i don't want my AC to suffer.

 

my AC works fine and i have an a4.

 

what about the stereo?

 

only thing that happens is when everything is on.AC,rear def. ect and im stopped the needle will go into the red zone but once im moving it goes back into the normal range.



unless you have a custom system you shouldnt have any stereo problems.you could always have your idle raised.i had mine raised slightly.

 

cuz i do have a good sized stereo, and an Optima Yellow Top. I had the idle speed raised for my stall convertor, but don't want it too high.

 

I was told to get the alternator pulley if you are running a system, but it's not necessary if you are not. You should be fine if you get both.