PES is a waste of money for the 4.2L audi motor...... A bolt on N/A JHM car will run with a PES or VF charged s4 ..... JHM supercharger is the only way to go

 

just to stir the pot a lil...total up how much you spend to have a full bolt on JHM car.

how much is the stg1 pes kit? 6kish?

Run that vs a stage 1 supercharged car with stock exhaust and yes the jhm car will give it a go for it's money. Go the extra 2k on the s/c for stage2 and add in some w/m and that jhm car will be left.

With that said i wonder what boost level stage 2 is at? Not much room for improvement with an eaton type blower. Someone put on whipple.