Under Drive pulleys?
08-17-2012, 11:44 PM
#1
Thread Starter
Join Date: Jul 2012
Location: California
Posts: 20
Under Drive pulleys?
The Next Mod i was considering for my 08 GT was a set of UDP's i have been reading a little bit about them and understand that it helps the accessories life time, and also takes a little bit of stress off of the motor. i was just wanting some opinions on what people thought about them and experiences with them and if they like theirs.
08-18-2012, 05:27 AM
#3
2nd Gear Member
Join Date: Jul 2009
Location: Indiana
Posts: 161
Had them on my 09 GT & they caused no problems. I couldn't really feel that they did anything, but if they freed up 10hp I was fine with that. It all adds up. I got rid of the chg motion butterfly valves in intake too, which is supposed to yield another 10hp or so. 10 here & 10 there add up, you know?
08-18-2012, 06:17 AM
#4
6th Gear Member
UDP's will free-up about 3-5 RWHP but most people have a threshold where they won't feel much less than 5-10 additional RWHP. Unless you're sitting in stop-n-go traffic the larger % of your drive, UDP's have no negative affect on the accessories.
08-18-2012, 11:14 AM
#5
5th Gear Member
Join Date: Jul 2006
Location: GA
Posts: 3,015
+1 ^ I felt a minor change in 1st and on the highway. Nothing too noticeable, but it's a cheap part and add's HP. < 10HP is all in your head if you can feel it 
I would not pay retail. Wait until a member has them in the "parts for sale" or ebay has them 50% off used.
I would not pay retail. Wait until a member has them in the "parts for sale" or ebay has them 50% off used.
08-18-2012, 03:15 PM
#7
6th Gear Member
Join Date: May 2005
Location: MD/WV
Posts: 5,736
OP, AmericanMuscle currently has a set of UD pullies on clearance price for 119.99. Currently out of stock but you can still order them.
http://www.americanmuscle.com/stack-...i-pulleys.html
You can also use your 6% MF.com coupon, or if you're special like me and got an email special, there is another coupon for 10% on clearance items.
http://www.americanmuscle.com/stack-...i-pulleys.html
You can also use your 6% MF.com coupon, or if you're special like me and got an email special, there is another coupon for 10% on clearance items.
08-18-2012, 10:29 PM
#8
I've done a lot of research on these and several people have done independent dyno runs and before/after UD pullies showed little to no dyno gains. Take it for what it's worth but I trust independent dynos more than dynos sposored by a brand.
08-18-2012, 11:20 PM
#10
5th Gear Member
Join Date: Mar 2006
Location: Colorado
Posts: 2,652
Whaaaaaaa????!!!! You mean to tell me that the manufacturer might not be telling the entire truth?! Heresy! lol
