Originally Posted by savage

Decided after much research to go with the Perrin pulley. Being that I intend to SC it (eventually) the Perrin seemed to be the best choice.

...now I have to wait impatiently for it to arrive!

I've done the I/H/E all myself with the help of my GF. I'm assuming I can get the pulley on with the help of my ace mechanic girlfriend...safe to assume?

What's up with the Perrin Fuel Rail? Does it really add modest HP or is that only when paired with the larger fuel injectors?

Originally Posted by hPower

Ok, let's see if I can give you a little bit of clarification here. First of all, the information I am about to share with you is from Mike over at www.NonStopTuning.com who can be reached on AIM at the screen name NSTonAIM. NST does nothing but build pulleys for a living so they should know what they are doing with pulleys.

There are two benefits to be had with aftermarket crank pulleys:

1. NST crank pulleys are built from aluminum instead of the steel used by Toyota. Weight reduction anywhere on an engine, especially the rotating assembly leads to much better throttle response and allows the engine to rev much easier. This has a great affect on the butt dyno.

2. NST crank pulleys are light weight and also underdrive some accessories. Slowing down the car's accessories reduces what is called "parasitic loss." Accessories actually rob some of the engine's HP to perform their job. Quality underdrive crank pulleys (NST) slow down the accessories by a small enough amount so that their performance does not suffer but enough to make a noticeable performance difference.

Real companies spend a lot of money in R&D to know where to draw this fine line. The NST crank pulley is only a 10% underdrive pulley. This means you won't even notice the change in your accessories. The human body can not distinguish the difference between the A/C blowing at 50 degrees vs. 45 degrees.

Furthermore, some owners love to throw A LOT of audio/video equipment into their cars and notice that their stock alternators can not keep up with these demands, yes even with stock crank pulleys. Some of you big stereo guys know what I'm talking about here. This is why NST has designed an OVERDRIVE alternator pulley to help these people. Just because you use an underdrive crank pulley does not mean you MUST buy the alternator pulley. Plenty of people in the tC forums run just the NST crank pulley and never have any complaints.

Real companies like NST do real R&D and other companies build products that they don't need to educate you about, so they just take the easy way. Or they do copy-cat engineering, like OBX