Marvin Answers your questions . . . 

Dear Marvin,

I am the proud owner of a 1993 BRG - 1 owner - 91,233 miles on the odometer.  My Question:  Is it normal in hiway driving at speeds between 48 mph and 61 mph in fourth gear when decelerating through intermediate shifting and applying additional pressure to the accelerator I feel a slight shifting and somewhat of a drift which appears to be a misalignment of the differential which has an immediate impact on the left rear brake rotor.  Is this normal??

Rudy Roaddy

P. S.  I have installed a tubular flow catalytic converted sway bar with hot air inductors together with a stage air filter.  Could this be the problem??

Dear Rudy:

I have many times encountered this very problem on a number of 1993 BRG Miatas. To cure this very perplexing problem I suggest you change the color of your car:  try red.  This remedy has worked very well in the past.

Good Luck,

Marvin