My nephew's got an 03 that's got an odd pulsing going on in the brake pedal. It's not constant, usually when the car's moving slowly, almost stopped. Feels like the pedal does on a car when there's nothing left of the pads and the rotor's been wiped out, but the pans and rotors on this are fine. No ABS light, don't know where else to look. Ideas?

Anyone have experience if POR 15 sticks to aluminum?   When I was painting my subframe I found that it didnt apply well to smooth, non rusted metal, even after using the zinc compound. It just didnt layer much. I want to use it on some aluminum parts for protection, its a good thick paint that does not chip easily.

ok, so last night i notice this nice pontiac g8 gt ahead of me. so does this camaro as he speeds up to get beside the G8. well, they have themselves a little race and get stopped at the next set of lights which just turned red. so i have time to get up behind the camaro at the light. there are only two lanes that go straight ahead... camaro in left lane, g8 in right. there was an suv behind the g8... beside of me. the camaro was lurching pretty violently so i knew they were about to run again. l

when i first start the car up in the day the car revs really high, and im running a solid lifter and cam so it sounds like the lifters are ging to come out the valve cover at first start then idle drops to normal and warms up then drops to 800 or so rpm's where it should be , im trying to find out whats causing this , ive checked for vacum leaks and nothing yet and also i have gm maf/trans if thats any help thanks jason c