Originally Posted by DDP2011X5M
Sorry if this ? has been answered before, but with these tunes, do they void the factory warranty?
Also is the difference in HP really noticeable when driving?
you can flash back to stock with a lot of them so you can avoid voiding warranty. and to your second question YES, totally takes it to the next level. I think the gains velos makes would be even more of a difference than what I see with dinan (which already hauls ass imo)