is the underdrive pulley really worth the money, what about an after market MAF, what are yalls thoughts?

 

Underdrive is well worth it at $200. It slows down all the parasitic devices being spun by the serpentine belt. They are all being spun too fast(except at idle) so you waste horsepower spinning this stuff to fast when they can actually do their job at a slower speed. The horsepower saved goes to the rear wheels. An added benefit is all those devices last longer because they aren't spinning faster than they need to. Their bearing last longer. Aftermarket MAF sensor isn't worth the cost since the OEM unit is well within the limits of a NA application. You need a tune(if you have auto trans.) and an underdrive.

 

got the exhaust from the muffler back, finished today. I put on a new magnaflow cat(3") and put my dynomax bullet back on, now with the full 3" exhaust, and ORY and headers, it has a weird tone when i put my foot to the floor, i guess its what you call "rasp". what muffler sounds good, i want a throaty tone.