50foshow

Ok whats the deal on underdive pullies do they make a noticeable difference also will they mess with my charging system and A/C just wondering thanks people

LTnone

No messing with the AC as the only pullies used are water pump, crank, and alt. Some people have charging problems, but there are also a lot of people who don't. Personally I have a 3g alternator and have no problems whatsoever. IMO they're worth it.

red95gtconvert

I love my ASP underdrive pullies, they make a noticabledifference in power. I also intsalled an ASP overdrive alternator pulley to keep the charge up at idle and it works great.

ROTTITANK

Ive never notice a gain .Maybe 5-10hp if u call that a noticable gain.

2 kwik

well it's about 7-12 hp it's a small increase you might be able to see it in a 60ft time most...the crank pulley is where most of the hp is at and you can just use it and the other 2 stock

dman302

avg is 10-15 flywheel which is somewhere in the area of 5-7 hp...you're likely not going to feel it but remember five mods for 5 hp is 25...you may not notice any one mod...but as they add up you will get faster. I myself run a 100amp alt and do on occasion have charging issues when I spend extended time at idle with the headlights and a few other features on.

Jfsram

I have underdrives but what do you guys consider charging problems.
Yes I'm discharging if I'm idling with alot of stuff on. Heater/AC, lights, stereo etc but how long do you do this. Me, only if I'm stuck in traffic.
99% of the time my car is running, it's above 900rpm.

To get to the point. I daily drive my car and often get stuck in traffic. Daily includes rain, snow and sun. My battery has never went dead yet.

CrazyCobraSpeed

i say go for it... i put underdrive pulleys full exhaust and cai on at the same time alone with a 4* timing bump and it was an animal compired to the cobra stock...i probably gained sumwere in teh neighborhood of 20rwhp is my guess... plus it sounded better... and it was ready to go for my hp now... so yea all those upgrades a great upgrades.... underdrive pulleys are easy... if u have an air impact wrench it may take u 15mins to swap them all out...mayb... lol

only reason i would say dont get htem is if you gettin a s/c in the next 3months... then its just a waste of 100 bucks.. my guess is u arent tho... i iwll be gettin one in the next 3-6 months hopefully but ive had mine for about 3-4 months already and paid 110shipped for them and can probably sell them for 50 bucks... so its not much of a loss and i had the gains while i didnt have the s/c so its worth it in my mind

i vote yes with the limited info u have givin us

50foshow

thanks people

92hatchLX

I payed 60 bucks shipped for mine and they were brand new off of Brenspeed.com. I wouldn't spend over that IMO.