Tweet
What exactly would the gains be for a blow off valve with a turbo. I mean, I know it helps it work "more efficiently" but is there any real performance to be had? Thanks
-
1999 Firebird -
no performance gains. It keeps you from having compressor surge and will keep your system alive longer. I wouldnt run a turbo system without one personally.2001 Arctic White Firebird With Black Drop Top<br /><br />3:42 Gears<br />Zexel LSD<br />BMR upper A-Arms<br />Trans Am exhaust with 3\" I-pipe and cutout<br />Modified intake<br />Mecham Hood<br />Trans Go shift kit<br />Making rear control arms and panhard -
A4 tranny /M5 tranny + turbo = must have BOV.
A4 + super charger = do not need BOV
M5 + super charger = SHOULD have BOVComment
-
There are no gains, and it doesn't help it to be more "efficient". With turbos you do not NEED a blow off valve, some people think they help to make a turbo last longer. However no one has ever blown up a turbo because of compressor surge. It does seem like it would help the life of the turbo, but there is nothing proven. I have a pt52 right now, and no blow off valve. GM never put a blow off valve on the grand nationals, therefore they did the research and decided it was not beneficial to put it on.
if you want to lose all of your boost while shifting and have to rebuild it in every gear then you should put on a blow off valve. Super chargers have a recirculating valve, not a blow off valve, this helps to prevent over boosting at idle. they don't need a blow off valve vause when you let off the gas the supercharger stops spinning as fast and that controls the boost level.Originally posted by grayman:
A4 tranny /M5 tranny + turbo = must have BOV.
A4 + super charger = do not need BOV
M5 + super charger = SHOULD have BOV1987 Buick Grand National drivetrain in my 1993 Pontiac Firebird. PT53 turbo, 212/212 comp cam, 3400 lockup converter, stock heads, Precision bar & plate FMIC with 3\" piping, 1994 z28 rearend, hotwired walbro 255 fuel pump, Nitto drag radialsComment
Comment