It's a maxima given that a y pipe is the best bang for your buck, but what i'm wondering is if a underdrive pulley is a close second...unorthodox claims 8-10 hp increase, is that true?! I'm sure i'll get flamed for this thread but I gotta know and couldn't find it in the recent posts anywhere.

 

UDP is definately not a close 2nd to a y-pipe...

8-10.. ...

 

The VQ will rev faster and it will contribute to reaching peak power earlier.

 

so reaching peak power faster=more power?? I can see how reving faster would be convenient but doesn't seem like it would help very much w/o alot of mods...I have a y pipe and hacked intake...think it will be very noticeable??

 

i can sell you my motostorm udp with both belts with about 3000 miles if you are interested =]

 

Spend a little extra and get a lightened flywheel if you want to feel what an underdrive pulley CLAIMS you will. I didn't notice a difference in my UDP until my ac was bypassed and more when only power steering was hooked up.

 

That's interesting. This is a little off subject, but does anyone make aftermarket cam shafts (to compliment the lighter pulley)?

 

Yes, but the cost/benefit ratio is not very good.

And yes, I dont really think this yeilds more hp, just changes the curve.

 

The UDP seems to only allow the engine to spin a little easier/ less work. But I don't really think it "frees up horsepower".
There's also pistons I think, but none of it seems worth it unless you're rebuilding the engine already.

 

When installed my UDP it only shaved off a tenth of a second off my quarter mile time.

 

hmm... i didn't feel much gains when i put the pulley on, but couple days later however i noticed the increases, especially in lower rpm's, car pulls a lil tiny bit faster. Motorstorm UP is only like 90$ so its not that expensive, get it.

 

yup..they sell the engine rebuilt kits here if anyone whats to spend the money.

http://www.importperformanceparts.ne...ek-nissan.html

 

Alright so a udp isn't that great it sounds...so what is the next best thing after a ypipe? I'll get around to dropping the max this summer...

 

It's up to you and you want to do with YOUR money.

 

lol yes it is my money but i'd like to spend it wisely, thus i ask the wise ones...

 

Suspension/VI/ECU