FsuGoNoles63

Where can I buy the udp's for our 4.0's? The only ones I see on AM are for GT's. Do those fit to our engines?

And sorry for so many threads recently, I have some extra cash lately so Im starting to get the mod bug lol

MustangFirstCar

I believe mustangsunlimited.com has them but their site is down right now.

The only other places I know of are
http://www.latemodelrestoration.com/...monic-Balancer
http://www.cjponyparts.com/underdriv...5-2009/p/UP43/

4.0 $tang

i bought one from Stangmods.com, install was simple. It comes with belt and installation bolts. I noticed a difference in acceleration from 3k-6k rpm, a good mod, but not the best first mod. If your stock i would consider a intake and tune first. That will net u the most hp of any mod, aside from forced induction. Just my 2 cents.

http://www.stangmods.com/ASP-V6-Unde...lt-p/00234.htm

v6motorheadftop

agreed, tune, cai, then possibly exhaust and gears

tigercrazy718

can someone explain what UDPs do again? i cant remember lol

4.0 $tang

it under-drives all accessories, freeing up hp. Its a smaller crank pulley.

tigercrazy718

so would this be a bad thing to do if im running an aftermarket HU and subs and an amp?

4.0 $tang

I am running hid conversion kit and a 1000 watt amp, have had no issues

tigercrazy718

alright thats good. i might get these then

MadStang40

Yea FSU, I've heard (haven't bought them myself, no experience with them) that they'll free up maybe 5hp. Grab a tune and intake. The weeeeeeeeeeeeeeeee factor is off the charts with a tuned mustang.

PS, UCF FTW haha