Will a faulty intercooler pump always throw a code. Im trying to track down SC boost fall off at WOT. Changed the belt which helped a bit due to some slippage. Im getting no codes other than p402 (catalytic converter) however the supercharger pulls well during part throttle then quickly flattens out with WOT. I have a Velocity tune and larger lower pulley good for 450HP. Im not seeing anywhere near that… trying to sort it all out.

 

I doubt it will ever throw a code. Maybe sticking a thermocouple on the supercharger lid would give you an idea of air temp going into the engine?

 

You should be able to monitor the IAT2 temps & the timing through live data. You'll be able to compare temps on steady part-throttle against WOT. At the same time you'll also be able to see if it's pulling timing.

 

Whats your car?
Because with our tune boost does not fall off. We just set a record for fastest 5.0sc car btw

 

2013 XF sport AWD 3.0 SC
Velocity AP tune