fm o2 modifier
 

i think mine sh*t the bed. im trying to test it off the car with a fluke multimeter but i cant get anything. and im not too sure what im looking for. any one have values for -as is- and -under boost-? testing under boost with a bicycle pump. i just got all my leaks fixed to... :bang::bang::bang::bang:

thanks for all the help. dont all reply at once.