no boost

[lght1]

Hi

Yet another code(s) for my truck.

I am showing p1247 , p1248 and p603. The 603 doesn't concern me at the moment but the other two are very apparent when driving.

I have checked all the boots and none seem to be leaking.
Any suggestions ? MAP sensor ?

[Justin@DP-Tuner]

Could definitely be the MAP sensor. Like I stated on the other forum, hook up a scan tool that will read MAP and see what it is doing. Also, did you unplug the sensor with the key on? (I know I said the same stuff on the other forum, but different people see this forum who may need the same help.)

[lght1]

Hi

I installed the new MAP sensor last night and today, I can hear the turbo whistle and what difference in performance.

Thanks for the help.