I had Legacy dyno tuned at the Shop CT in Norwalk, CT
Cobb Down pipe, K&N filter and open source tuning. It raised the torque from 250 to 350, not much change in HP
This was done over 2 years ago. The battery has been disconnected a few times. Is it time for a new dynotune? Have there been many changes in open source tuning?
I run 93 octane only without the valet, 91 etc options which is fine.
When doing this I could add an up pipe. Does it add much? Can't afford a turbo back exhaust...
Any other bolt ons that make a big difference?
Advice appreciated