Originally Posted by tnspd
So from what I have been reading are there any ZL1 mods to gain some HP that do not need a Tune. This is rediculous! Everyone I read says you need a tune.......
Why is it ridiculous?
You would feel more comfortable running to lean or to much timing for the boost or extra heat your creating .....Tuning is for your engines safety!
2012 and 2013 are examples of what the future holds.......14 and 15 will be unbelieveably tough :(