When ur driving hard does your boost guage go all the way to the top quickly...? meaning peak at the top where the plus sign is?? and stay flat there? or does it only touch the top gradually after pushing it for a longer period of time...i put this lower ic pipe on and its width is maybe a half an inch less than the upper ic piping, which is like 2.5" im guessing. and im trying to figure out if my boost gauge is even acurate anymore??

 

It was never accurate in the first place, you need to at least get a $40 autometer gauge if you want to modify the car much, it could save an engine.

 

stock boost gauge (from what i remember) takes
info from like incoming air, throttle position, rpm and moves the needle. its pretty much worthless

get a real boost gauge that actually reads vacuum/boost