3.2" SC Pulley On

Finally have my tune good enough to support the 3.2" for daily driving and hopefully racing later this month. I was nervous about this, as .2" down is quite a jump. When I first put it on, I was seeing 3-5 deg KR pretty easily. Now, getting knock with normal driving is nearly impossible. During WOT I do see a couple degrees up high in 2nd gear, and in 3rd above 100mph, but nothing to worry about. See my PowrTuner log in the Tuning forum for more on how I got it to work.

The car definitely feels quicker. "Fatter" torque curve is one way to describe it. Not a huge difference, but this pulley was only $60, and gains get smaller and smaller at this stage. I notice a swift tug after each shift that I was missing before, so I know I picked up some low-end twist. Also very happy to get it to work with boost near 13 PSI now. Hopefully will be ready for IDD at the end of the month... going for a 13.7 and to break into the 100 mph club.

That looks nice! Good luck getting into your club!

Nice, always like the look of Neeeee-eeeew parts. The only thing better is going fast with you new parts.

Congrats Aaron! Goodluck on the 100 club

did you throw on the 3.5" s/c upper idler pulley with the 3.2", or are you still just using the larger s/c tensioner pulley?

I used the 3.5" idler + the 3.5" tensioner pulley. If you don't, the belt will actually rub against itself near the tensioner. Not good!

Well I know I said the car "feels" faster now, but I didn't expect everyone to just take my word for it, so had to show you all a little proof (needed to convince myself as well!).

Took a scan last week after dialing in the 3.2", then compared to a similar scan from 2 weeks ago when the 3.4" was on. Both scans were done at the exact same location, 40ºF, running 94 octane:



Doesn't get any clearer, imo. 3.4" (blue) is outperformed by 3.2" (yellow) by more than a noticeable margin... even though I screwed the launch for the 3.2" run. And look how she takes off after the 1-2 upshift!!! Btw, the time units aren't in seconds (one area where AutoTap falls short. Still, consistent for comparison though).

If I can just master the launch of the 3.2"; it's getting a bit tricky now.

did u just test that at midnight????????? jk

Nice Aaron. How is the KR doing now? Have you seen anything different since you last posted?

awesome...you need to thro an IC in..an mild cam....then you can do your trans..LOL

sick aaron

is this next on your to do list?



haha