hey guys
my car was tunned on wastegate .6 bar spring made 395@254tq
i was told by my tunner that it pushed 10.9psi at dyno
after the second time at the track i was able to record ONE of my runs
and the GM map sensor max reading was 9.1psi ...
now i just got a MBC that i want to install it and set it up to 10psi
but its possible without tunning
what should i look for?
i got a s300 hooked up to plx...

 

Well if you're monitoring your A/F ratio then you should be okay turning it up to 10psi. If not then leave it how it is. What was the weather like when you tuned it comparing to the track conditions? You could have dropped some boost due to higher heat.

 

Give your tuner a call to ensure he properly scaled the tune for the higher boost levels you are wanting to run. Running a wideband oxygen sensor is a must too..