my race car as a bleed valve for boost control !! lol

the dam amal valve wouldn't control boost propperly on the rollers a few weeks ago, it seemed the chip installed wouldn't send it the correct signals(only seeing 1.3 bar on a t34.63 with 55lbs siemens) so the tuner fitted it to get me going and found 23bhp lol (the chip was from a different tuner)

steve