they state its doesnt add whp   just lets u rev faster  .  I just wanna know if these items are worth the 2 - 300 ??

so is is the performance increase  Justifiable for the cost of doing these mods .  ???  I think i can get both pulleys for around 150 - 200 $

1lb rotational = 10lbs of fead weight removed.....so by adding both pulleys you could remove 4.7 lbs if i remember right; so the power increase is the same as removing 47 lbs out of your car.   

so the question is:  Do you think 200$ is worth the difference of lets say 8gallons of gas in performance? 

They do smooth out the powerband tho

wrp is the lightest and underdriven..... only company that offers PS pulley too.   otherwise you can spend more money on a stock dia. heavier more expensive UR

pimpsmurf wrote:

donspecv02 wrote:

Waste of money.

Compared to a nitrous kit, yeah, definately. haha. Not a "waste" if your intentions are to make big hp gains on the dyno, but double rotating mass is a big deal for acceleration. If you are N/A, it could help some, but F/I and the gains would be minimal.

kktohot wrote:

1lb rotational = 10lbs of fead weight removed.....so by adding both pulleys you could remove 4.7 lbs if i remember right; so the power increase is the same as removing 47 lbs out of your car.   

so the question is:  Do you think 200$ is worth the difference of lets say 8gallons of gas in performance? 

They do smooth out the powerband tho

Your ratio is off, and doesn't account for gear ratio. It would improve the weight reduction effect in lower gears and reduce it in higher gears. That is why you used to find dynos on ebay showing 4hp gains in 2nd gear. In 4th gear, you see much less, typically 1-2hp.

It helps you rev faster in neutral, which is fun, and combined with a lightweight flywheel (and especially with a lightened/knifeedged crank) you could rev rediculously fast. idle to 7k in 1 second would be great. haha

smooth out the powerband? I want to see info on that.

-JNY

I never saw any gains whatsoever.  Only noticeable difference was reduced drag from the A/C.  And you know how many times I've been to the dyno, LOL.

pimpsmurf wrote:

donspecv02 wrote:

I never saw any gains whatsoever.  Only noticeable difference was reduced drag from the A/C.  And you know how many times I've been to the dyno, LOL.

Which pulley did you dyno?

Reduced drag from the A/C = more milage, although probably very little.

-JNY

We R Paperweights Crank and PS pulleys, no gains.

Erix05_SER wrote:

well , i am gonna  have them in a few days . i will let yas know if i think i can feel a difference in my rpm response .. 

Erix

Butt dyno FTL.....

if you get them cheap, maybe, however they dont make much gain.  I think 100$ is pretty cheap so thats why i bought the crank pulley, still looking for someone with a cheap PS pulley

You dont realize how much they help until you take them off.

STOPSpec wrote:

You dont realize how much they help until you take them off.

Dyno sheet?

STOPSpec wrote:

donspecv02 wrote:

STOPSpec wrote:

You dont realize how much they help until you take them off.

Dyno sheet?

Never said they gained hp. I have never dynoed them. They do help the engine rev faster.

Not really.....a flywheel does....a pulley is basically shiny.

If you can get one for under $100 I say get it if you want to stay n/a.

armadnigeneral wrote:

What the hell does "rev faster" mean anyway? I mean, theoretically it should result in more power to the wheels, okay. If it doesn't do that then who cares how fast you can rev in neutral?

sounds more badass when revving at faster cars. duh.

textureofreality wrote:

Just buy the and install the f**kin thing!!!!

yes please^