TROYER underdrive pulleys

[97xl]

When I put the UDP from Troyer on my truck I did notice that I got slighty better mpg, and better passing power. Been on my truck 2 yrs now with no issues. But at the time it was installed I also had the AF1 CAI kit installed at the same time so I can't say which gave the better gain but I'm happy with it.

[Joethefordguy]

Originally Posted by 97xl

When I put the UDP from Troyer on my truck I did notice that I got slighty better mpg, and better passing power. Been on my truck 2 yrs now with no issues. But at the time it was installed I also had the AF1 CAI kit installed at the same time so I can't say which gave the better gain but I'm happy with it.

97xl,
tell me about your wheels - what are they, what size, etc. i like the look of them.

jg

[907DAVE]

FWIW I had a set of MARCH underdrive pulleys on my F-150 (5.0) and hated them. Alternator wouldn't hardly charge at idle, parking lots were a pain because of the reduced power steering assist, so I ended up giving them away. Just sayin........

[88Racing]

Originally Posted by 907dave

FWIW I had a set of MARCH underdrive pulleys on my F-150 (5.0) and hated them. Alternator wouldn't hardly charge at idle, parking lots were a pain because of the reduced power steering assist, so I ended up giving them away. Just sayin........

That's a good point also.
Some of the udp kits out there are a little bit to much underdriven.

[Longshot270]

I was skimming through because I've added the troyer pulleys to my list for future modifications. There were some valid points mentioned like real horsepower and the product's effect on the life of other parts in this thread. I also wouldn't mind having a little more tension in the steering wheel when going at low speeds. Has anyone else experienced this on their truck with any other kits like the troyer? I'm just trying to weigh the pros and cons of the $225+S/H kit. The gryphon is still paying for itself (it'll be quicker now that gas prices have gone up!) so I'll probably wait for that before I buy another expensive upgrade. I'm not really worried about lowering the output of the air conditioner because I usually just have the windows down anyway. I'm not worried about the electrical that much either because my sound system pulls next to nothing when I run just the aux. speakers(like if I'm just sitting in there listening to music waiting for something). Would it be possible to leave that alternator pulley alone or would that mess up the belt size too much? Also, how difficult were they to install? I've got a list of mods longer than I care to list and they were all put in by me (except for the rims because I sold my stock rims for $100 when they expected them for free. ) so I figure why start now if it's relatively easy.