Hi everyone, Looking for some information. I have a 2001 Sean Hyland S4 Mustang Cobra. The car only has 421 km on it. I am taking it for a custom tune tomorrow and just checking if anyone has any info I might have missed to give the tuner. Novi 1000 supercharger,42 psi injectors maf to match,t-56 6 speed,4:10. The reason It is going for a tune is the dealer flashed the ECM and lost The SHM Tune. SHM has not got back to me after 3 phone calls and 2 emails to buy the tuner and tune from them. Does anyone know if they stroked the 4.6 to get the 535hp? Or is there Anything done cams,head work I should know about? Problem is car stalls at idle if you dont have A/C on.