Time to look for a TBD, Which is the preferred? Options

[ww914]

I have read many posts here regarding TBDs and I would like to hear some comments on both Wavetrac and Guard, or any other product that is working for you. My 914-4, 2270cc, with stiff suspension on Hoosier A6s, is primarily used for auto-cross. Don't care much about ice, snow or rain as this car will not be driven in those elements.

Thanks in advance for any responses.

[Randal]

Guard TBD's work great. Only way to go if your running Autox; you can dial out understeer. Same with Hill Climbs, the TBD will put the power to the wheel with the most traction.

Haven't driven the Wave TBD, but Bill Pickering just put one into his 901 for his new 914-6. It a 3.2 liter, so looking forward to trying that differential in the car. Should be a terror.

[ww914]

Guard TBD's work great. Only way to go if your running Autox; you can dial out understeer. Same with Hill Climbs, the TBD will put the power to the wheel with the most traction.

Haven't driven the Wave TBD, but Bill Pickering just put one into his 901 for his new 914-6. It a 3.2 liter, so looking forward to trying that differential in the car. Should be a terror.

Matt Monson of Guard says that the Torsen design of Wavetrac locks under braking which is counter to what would be desireable in AX. He says the Wavetrac design is deliberately intended to prevent trail braking, which means that all your rotation in a turn must be done during the coast phase of the turn. Their locking mechanism doesn't release until you let go of the brakes. With the Guard, you can rotate earlier and therefore get on the throttle for exit in the direction you want to go. Anyway, in theory it sounds like a fast enter/exit in a tight turn.

I wish someone would chime in on that who has one and tell us if this is what he/she experiences.