hi i have a 97 GTP with k&n air filter, lowered, 3" dual exhaust,freshly rebuilt stage 2 transmission.the car runs great but from an idle in park there is a slight lag when you firt rev the motor,,, as in rpm tends to drop a little then picks right up.everything look conected and in the right place.
i am getting 2 codes,the first is p0102 mass air flow sensor, i did change this map sensor after installing a new k&N filter so it was dry and not to contaminate the sensor, the second code was p1655 evap emissions purge control solenoid which i replaced also but tend to get this code once in awhile, the car has new iridium plugs in it also, another thing i notices is i only get half boost on the gauge even at full throttle,also there is less boost the faster you are going example only get 1 or 2 bars boost when at 120 klm and you giver.any idea on this will be greatly appreciated.....
