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The Livernois tune I had before wasn't that impressive for me either. A little bit of SOTP but not much. The AED tune really was a step-change difference. I would expect the same from Lund, PBD, also. Sprintbooster/Pedal Commander just change the input/output of the pedal signal, there's no...

Not a Bullitt, but my GT definitely changed tone significantly in the same ways as the OP describing when I got my AED tune.

100% agree....and then make a REAL track pack for an aftermarket upgrade from Ford Performance. The base suspension is too much of a marshmallow all around (doesn't even ride that well).

Left and right are the same for the front. Both values are there. If you have a Perf Pack car, you only need to to the forward link (the red one) on the front. The lateral link is a bearing and doesn't need to be clocked. On the rear, the key ones to get are the LCA bushing (166 ft-lb), toe...

IMO, very loud, a bit too raspy and not as refined/engineered tone as Corsa/AWE, for instance.

-2 is fine (and recommended) for performance usage. Agreed on -1.5 for street driving.

Negative.

Friction is friction. https://torsen.com/how-it-works/

Less. About 5-10% less TBR. Going up to the 75W140 from 75W90 has about a 10% reduction in TBR also.

Both are T2R units, and I'd guess the difference in TBR is down to the fluid fill and modifier (or lack thereof). I have a GT350 diff in mine with the 75W90 BG oil w/ friction modifier. It works very well for open track and autocross.

Shhh, Norm, we can't have intelligent conversation about a complex, nuanced topic. That would make way too much sense.

2.8:1 as shipped

The stock file is stored on the device...

No. If the car is fishtailing in a straight line, either the road isn't actually straight, has heavy crown, or you have an alignment discrepancy left to right. On corner exit, the torsen is far easier to control throttle-induced yaw.

Both are excellent choices for the SP083s and you would not be making a mistake either way.

The Trac-Loc just doesn't have a strong bias ratio in general, so it feels a bit more like an 'Open' diff on coast, particularly with 70k mile heavily used clutches.

Get someone to swap axlebacks with you Touring for Sport. I see that all the time and have done it myself (but the opposite). There are a lot more people wanting to go to the Sport Catback from the Xtreme after adding long tubes.

I'd say in general, but more specifically autocross where the relative speeds between the inside and outside is/needs to be larger due to corner radius. The torsen bias ratio goes both ways, and has the opposite effect off throttle/engine braking. We saw this rear its ugly head with our Formula...

That's not my experience of how it operates. The trak lock actually had less corner entry understeer than the torsen does, but that didn't make up for the improvement in grip and torque biasing yaw on power the torsen has.

The lighter front can be an advantage for something like autocross, thus why the EB is classed higher than the GT for SCCA street classes. On a road course, the small weight advantage will not be enough to overcome the power deficit unless it's significantly modded. 430-450 reliable whp is easy...