Tuning in general

I pains me to write this, but I was so gung-ho to tune my car that I almost did an ecu tune with a local shop that is doing it. But the better of me, started to worry about warranty issue. Local shop RSP motorsport is now doing ecu tune here in London Canada, for BMW and other cars and they seem to do also for many other makes. I was all set to to do the 2 series one they have but at last minute canceled. I have been peering over these pages for quite a while now and was tempted to do the piggy backs, Dinan or this one from RSP. I chose RSP as they are in my back yard. But as I have leased this car, it is not technically mine, BMW owns it. So by messing with ECU I could be in trouble if anything happens. As much as I want more power, I think I will have to be satisfied with what the 228i currently gives until lease is done. Otherwise have to do Dinan for warranty but that is 200km from here at BUDDS bmw and they charge $2000 CAD. Anyone else back out of tunes due to lease/warranty issues?

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