Quote:
Originally Posted by Rallysmurf
Thanks man. I sent him an email.
From what I read in mfg site I need a 30/90
# idk. 230 hp with 3stage abs tune so maybe the higher lock 70lbs.
Am I understanding correctly?
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I'm thinking 30/90 is the ramp angle? It depends on a lot of factors: power/weight/usage/driving style, etc. I would go for something with a little bit more decel ramp (a lower number), which will apply more preload during decel. What you'll feel is the rear being a bit looser under decel, which you might want for rally to help with a flick on entry but comes at the cost of still locking on high-speed decel making it looser on high speed sweeping corners. On the other hand, the 1er is short wheelbase and makes decent torque so you might not need the help to get the rear around.
One thing to consider is being a rally car, you might want to spend extra on a diff with tunable ramp angles (Mfactory for example), so you can use it as part of the car setup - although it means dropping and disassembling the diff to change the ramp angle. It's one more way that you can tune the car's setup.
http://www.teammfactory.com/catalog/partno/MF-TRS-10E90