zaaronz

iTrader: (13)

My car makes 399 rwhp (Mods in sig)- Id love to give it that extra bump to go over 400, but i really doubt i would actually feel the difference adding an underdrive pulley. I have an asp 25% pulley i got a while back,just not sure i want to spend the $ for a few hp's. What would be a good estimate of hp gain on a car with these mods?

TransAmWS.6

To me, it's not bad for the money, should net you around 5-10rwhp give or take a few

sandsk8erz400

iTrader: (1)

If you have the pulley, what would you have to spend $ on, the install?

bestlude

iTrader: (4)

exactly

another thing to consider, try a different dyno, maybe it will net you over 400. OR dyno your car at the same place on a colder day. If you're looking for a graph that shows over 400, do that.

AmarilloWS6

iTrader: (3)

I don't know how busy your life is but how come you couldn't install it yourself? I would do it but I'm one of those every little bit counts kind of guy lol

zaaronz

iTrader: (13)

I have a full time job and also run a side business online from home--and all that while 3 screaming kids run around me.... so yeah i have no time. The $ it will cost would just be labor. I guess i should at least find out how much it will run and then think it over-- if i could get 5 or so hp i guess thats not to bad.

simplysix

iTrader: (1)

Definatly worth it. If you really don't have time to install yourself, most shops should be a me to do it for about 1 hr labor charge. Usually $60-$80 depending on the shop. 5-10 rwhp for under $100; not bad.

Sales2@Texas-speed

iTrader: (5)

It's a good bang for the buck mod. You could probably find another car guy near you that would install it for you in under an hour for a few bucks or some beer. It is an easy install!

BlackScreaminMachine

iTrader: (17)

Free labor when you do the cam, very much worth it. Every little bit helps and does add up.

mjs1012

iTrader: (36)

are you including the cost of the pulley??

LS-ONE_DAY

He already has the pulley Mark, unless you're making a point that went over my head.

If I do a UDP (which I probably will along with a cam) I'm definitely going to get an ODP for the alternator to keep that thing working properly, that's something to consider.

mjs1012

iTrader: (36)

ohhh i missed that lol. but my point is that if you have a shop install the pulley it might not be worth it.

Mike, if you did an overdrive pulley wouldn't that negate the purpose? the point of the udp is to help the motor w/ all accessories to run more free. an overdrive pulley on the alternator would bring you back to square one but you'd have a lighter wallet. someone can correct me if im wrong.

Orange Juice

iTrader: (3)

For me it would be something that I would have done the next time the car went in for work. Most of the time it is a pretty simple install but you can search to find that a lot of people have had problems switching pullies. I would also upgrade the alternator pulley especially if you are running aftermarket amps.

thunderstruck507

iTrader: (18)

I swapped mine on, didn't take long at all.

Didn't notice a huge difference driving but the car definitely revved a little quicker after. Also my track times improved.

jrob56

iTrader: (39)

No sir, since you are only overdriving one of the accessories. Now if you put an overdrive on all of them then you would be back at square one i suppose. The UDP are usually a little lighter then the stock ones as well. I just did one with motor out of the car and its easy, just make sure you use an ls7 crank bolt(less than 10 bucks I think) or another longer bolt to pull the new pulley on. Using the stock one is dangerous as it only gets a few threads in to pull on.

mjs1012

iTrader: (36)

thanks for clearing that up i was a little unsure.

i avoid using a bolt to get the balance on all together, i have one of the install tools and it was the well worth the money. no headaches or worries about stripped threads and only took 30 seconds.

zaaronz

iTrader: (13)

I guess i assumed it was much more labor than you guys are saying- If its just 100 bucks or so, then thats not bad at all for the gain. I do have 2 amps mounted in the car- so i will more than likely get the alt pulley to help out.

Decadence75

iTrader: (17)

If you are searching to break that magic number, this will do it for you. However are there not issues with lights dimming at idle ect with 25% UD?

ULTIMATEORANGESS

iTrader: (4)

he can always have his idle raised if thats a problem.


and yes, its worth it.

Decadence75

iTrader: (17)

The way I've always understood tuning is that if you are adjusting idle to fix another issue then you are band aiding it and just putting off actually fixing it