Hi all , I have a few questions if I may , we had a 2107 550 in yesterday for some work and a dyno run , the figures the customer was expecting were well down.
It has a cold air intake and x piece in the exhaust mods wise.
It was running really rich on a stock tune which is where I reckon the power has gone.
looking through the calibration "stoich value" is 14.08 , why would Ford do this ?? to keep engines super safe or for very hot dry states [ we have neither in the UK]
Also we did the pulls in 4th gear , I can see from the calibration 5th gear has a ratio closest to 1:1 , does anyone know what gear they use on all the youtube vids .
Thanks in advance for any help .
Cheers Keith