When I have my car running and turn on the turn signal I get a audible change in the buzz of my MSD ignition. I have cleaned the ground from the battery to the chassis and made sure the terminals are clean. Another thing I have noticed lately is the fuel pressure will go up a couple of psi after the car has run for a while. I have the battery located in the back and I am using a small battery, 300+ CCA. I was wondering is that battery too small, should I go with something bigger? I also made sure that the alt. belt was tight and the alt was rebuilt about a year ago. Or does my problem lie somewhere else? Also I was wondering if the fuel pump is drawing too much from the electrical, it is one of the modified Endyn Bosch pumps, mounted outside of the tank. I also saw some where that somebody was using a 30 amp relay to power the pump. What they were doing was using 10guage wire from the battery to the relay and to the pump and using the main relay to activate the 30 amp relay, is this good or bad? The guy said he saw a noticible difference in the fuel pump performance, mine seems fine, just creeps up in pressure. Plus I am using a dry nitrous system so my fuel is majorly important and dont want to mess anything up.

Thanks
Gary