I do it before track weekends, which is just a generally good idea. About every 2 track days or so. I have no idea what the mileage is on mine between changes, but that's my guideline.

We will see. Confidence is a huge thing, too ;D I just love the way the car feels now, and if that translates into better lap times, well then that's the point!I have detailed GPS data of every lap I run, with all corner speeds I've run at Autobahn. Track conditions can play a factor...

Turn in is sharper and more immediate now - much more "point and shoot", with the vagueness all but gone now. Feels very precise and tight - it's a huge improvement.

Just installed my new stuff - here's some pics:The "P" Springs:18000-C ShocksMM Caster/Camber Plates and FR Jounce KitAnd installed! Better pics coming, these were just quick shots:Install wasn't too bad, and I had an alignment done after I finished. -2.5 camber is where I...

No need to counter this. A head to head test should suffice - equal conditions, same driver. Unless they have redefined physics, that "test" was self-congratulatory staged garbage.

The SCT update issue is turning into a mess. There are reports of several people doing the update and losing their tunes, motors boxed, etc. I was talking with Shaun from AED Tuesday, and I guess all the tuners are furious over this. Shaun told me he wouldn't sell another SCT tuner or tune...

Pete, that's probably the most honest comparo that has yet been written anywhere on the ZL1 ;D

Well, I'm a Midwest guy, so sure, location is a factor. But all things being equal, these days I tend to prefer NASA. Never said I wouldn't run SCCA if that was the only game in town - I was a member up until last year.

The PF01's arent bad, and pretty easy on rotors, compared to the Hawks. Price isn't TOO bad, I get them from Topbrakes.com. I'll likely get 2-3 track events out of the fronts.

Well, AI is one thing - isn't really a "spec" class per se. NASA has an GTS race class (German Touring Sportscars), and yet still has spec classes for BMW E30's and 3-series cars, various Porsches, etc. - so I don't see why they wouldn't.

My wife absolutely hates driving the Boss, which almost never happens. Says it ruins her spine for a day if she spends more than 10 minutes in it. She does, however, love driving our 2012 Wrangler Unlimited on Mickey Thompson MT's.

Dear god I want all of it.That's my feedback. Pure greed :D

Wonder if I could get NASA to do that, I'd be game, and they have plenty of spec classes. Plenty of Mustangs, too.

Wait a minute? We have a horn? Next you'll be telling me we have a radio, too. :o

Well, OK then. Pulling the trigger Tuesday on a bunch of stuff, and I guess the P's will make the cut.