T210thAnniv

i was told that if you have a atmosphere blow off valve the car will run richer. Is this true? and also i put 7 washers into the spring cause it was sucking air in when idleing, and i put a ligther there to see if it was sucking any more, and it wasn't. Do you think it could be sucking in when i am gunning it and will it harm the engine?? ok i meant i have a aftermarket bov. its a turbo II h34 and you need to washers into it so it would be more tigher si when idle it will not suck

Scott 89t2

only when the BOV is working, while shifting and letting off the gas. so it makes no difference.

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and also i put 7 washers into the spring cause it was sucking air in when idleing, and i put a ligther there to see if it was sucking any more, and it wasn't. Do you think it could be sucking in when i am gunning it and will it harm the engine??

are you running the stock one into the air?? you CAN NOT do that. it if is an aftermarket one there should be a nut you turn to change the stiffness. you shouldn't need any washers...

NZConvertible

Open venting the BOV with the AFM in place means metered air is being dumped, but that air's fuel still gets injected. It causes a momentary rich condition which can cause bogging.
You have to put a check valve on the stock BOV if you open vent it or you'll have the mother of all vac leaks.