Hi, i am new to Jags and i have 2007 XKR and i am wondering what tuning / pulley combo i should get?

is flashing the best option? piggyback? something else?

what are my upgrade options and where do i get them from?

i still have warranty on the car, so are there any risks with the flash/chip/tuning being detected by dealer?

what should i know before i mod my car?

 

I'm going with ETG myself... Jags really seems to know his stuff and I like the complete package of pulley and proper tune that goes with it. I know $1395 ain't cheap, but I know I trust the results... +55hp/+65trq... nice...

 

He seems legit and I dont mind spending the money but I like to be in control of the flash....ill pay for him to tune it but I am used to being able to flash and reflash the ecu myself