i just install a BLITZ BOV (include hard spring)but after i install that and when i step on the gas like around 3000 rpm and i release the gas on neutral ,the rpm will be drop a lot like around 200-300rpm and then go up to 800rpm ,but after that i put the stock one ,everything is ok ,so is this the BLITZ BOV problem ,so if i change to the other brand which one don't have this problem
thanks

 

if it is vented, you are prolly running rich when you take your foot off the gas as the blow off releases air that the MAS thought went into the motor.

 

it is because the blitz BOV is VTA (it vents into the atmosphere), not to put you down or anything but if you do a search on VTA's the topic has been beat. I have the blitz BOV too but never put it on. Go with a recirculating BOV. Or keep the stock one on

 

While VTA BOV sound nifty. Recirculating will give you a much more tractable motor for daily use.

 

so what brand you will recommed for me to buy