Chalky

iTrader: (2)

Doing H/C and ordered a PowerBond 10% UD Pulley. Just wondering if I should have done the 25% UD?

Any thought/experience with either?

SteveDoten@ARH

just installed the 4th Powerbond 25% UD pulley, all are street driven C5's, no issues

didn't know there was a 10% pulley??

Chalky

iTrader: (2)

Thanks for the reply. Yes, they have one @ 10% reduction. I may send it back and get the 25%.

1stz06

iTrader: (18)

I got very little gains from my 25%, don't waste your money on a 10%!!

J.R.

pdd

iTrader: (3)

i have the 10% underdrive. i didnt want to get the 25% because i have a massive sound system in my car. i was arfraid of the idle

ArcticZ28

iTrader: (14)

25% underdrive here, amp and subs, no capacitor, regular old battery, no problems here.

Chalky

iTrader: (2)

Makes me wonder if there is any real gain anyways with the UD pulleys.

SteveDoten@ARH

it all adds up, UD's are worth 5-8rwhp, it's been proven

rickyracer25

iTrader: (11)

TSP said the 25 was the way to go we will see on friday one the dyno

Chalky

iTrader: (2)

.

Thanks. Tried to see what gains people were seeing for gains but search seems to have taken a vacation again!

Thimble

iTrader: (2)

Dave, I'd suspect very few people switch only the pulley (as a standalone job - especially with C5s), and even less would take the time to dyno before and after just to see what that one piece gains.

Get the 25%, you'll have no problems...and even if it doesn't gain much, it certainly doesn't hurt.

Mine goes on next weekend with the cam.

Tom

Chalky

iTrader: (2)

Tom:

Truth is I am pissed at myself for not ordering the 25% UD in the first place.

You leaving next week? The crowd seems to be growing!!

ArcticZ28

iTrader: (14)

People actually have dyno'ed before and after with just the pulley. Once the search comes back up, look them up in the dyno section.

Thimble

iTrader: (2)

Just watching the weather at this point (and hoping the forecast changes).

Was planning on leaving very early Thurs. am, but may hit the road Wed afternoon if will help me dodge the rain.

I will be in Fl by Friday no matter what.

1stz06

iTrader: (18)

I dyno'ed before and after......very little gains!!!

They all add up but I can promise you, I sure as hell would never install another U/D pulley just to see what kind of results I get.

Gm-LSX

Gains in MPG? There got to be. There are Alt. Pulleys just for this Purpose wich are proven to work.

eamador11

Do 25%..go big or go home! hehe

Chalky

iTrader: (2)

I just re-ordered the 25% UD. Why not!!