GUYS HELP I'M TRYING TO FIND A POSITRAC DIFFERENTIAL SO THAT I CAN KEEP THE REAR END UNDER CONTROL

TOO MUCH POWER

SEND TIRES


Nah I can't tell any difference yet, but I haven't had a chance to open it up. My commute is <10 minutes and <40 mph.


Quote Originally Posted by Vas View Post
Have the same ones on the wife's zhp. I did not bother with the alternator pulley though.

Overall not a bad mod.
I'm thinking that the alternator pulley might make the biggest difference of the three since it's so tiny to begin with. The stock one is also heavy steel, while the Turner pulley is lightweight aluminum. Not that weight is much of an issue on such a small diameter, but I'll take all the free power that I can get.

The only way that I could see it being an issue is if your wife has a massive stereo setup in the trunk with multiple amps. I confirmed with Turner before I ordered that they had tested with Xenons on and both butt toasters on full toast. Might as well throw it on the next time you have the alternator off to replace the OFHG...

Quote Originally Posted by slater View Post
oh man... nice one.

good work on the pulleys. let me know what you think. at the very least... you got rid of the plastic pulleys.
Yeah those plastic pulleys felt very brittle in hand. Any plastic wire loom in the engine bay already crumbles if you make eye contact with it. Does that happen to Canada cars too? You and your stupid perfect headliners...

Quote Originally Posted by Sockethead View Post
That's the clearance on the UUC pulley too. I definitely noticed a difference. I think Ryan (Rkeeshaw) noticed a 10HP increase in upper RPMs on the Dyno IIRC.

I used Coopers years ago on almost all of my vehicles at the time... they make a really decent tire.
Damn that's really impressive. It would make sense that I don't feel a difference at low rpm, as the change in diameter will be more pronounced as the speed of rotation increases.

Pumped about the Coopers. I feel like people have been sleeping on them for years. They're doing a big marketing push for this new generation of RSA's, so I wanted to grab them before they got popular and the incentives went away.

Quote Originally Posted by BMWCurves View Post
I stand corrected, I forgot how that belt is routed. Since the power steering pump is one of the under driven accessories, does that affect steering weight?
Yeah, the A/C pulley has it's own belt coming off of the crank. I was thinking that I should have replaced that belt at the same time, but it looks fine and if it were to fail I'd only be without A/C -- not exactly catastrophic.

People have said that they noticed an increase in steering weight at low rpms. I didn't notice a difference when driving to work/parking, but I've been driving my Mazda for two weeks so the steering is going to feel crazy heavy anyway.