Oh boy. 45's @45. Tough as nails. The reason you drop your pressure is to allow the sidewall to take some of the torque. With 45's you don't get much sidewall ;-) . I would still try dropping the pressure (45 is really high for launch). Put it down to 16 and try that. It may have to go lower or higher depending on a lot (launch technique, conditions etc.). But yeah 45's are tough. Did you consider putting some 16 swirlies on and lowering the pressure?

Also, I'm sure that you probably researched launch techniques (of which there are many). But just to make sure, the one technique that does not seem to work with our cars is the dump and go :P . You gotta get it moving first before putting power to the FWD.

You will drop into the low 13's if you can get a bit more out of your launch. Like someone said in the thread "it's all about the launch"

MB