...or should I just go 4#?
Slightly unrelated question. How do I install that dumb little boost bypass valve? I know it should take about a minute.

 

I wouldn't do more than 3/4 lbs. with a properly tuned chip with a stock block.

 

I have a 6 and its fine. I dont drive DAILY though. Gas milage will go down. I think a 4 is great for a daily driver but its up to you!!

 

You left out that with the 6 lb. pulley DO NOT RUN STOCK PLUGS and if you get the 6lb. pulley to be on the lookout for a snotty kid in a yellw z06.LOL . Sorry I could not resist. I know you should never kick somebody when there down.

 

OK OK,

Hey get the 6lb for your daily driver, just make sure you get some good plugs, good program, & look for Yellow Z06's in Richmond VA to run. LOL....