Originally posted by spedy1
This was my exact thought too - don't bother entering time/drift trials (or any mode with a global leaderboard) with a modded car or you have a HIGH risk of being banned.
Someone could probably test it though, seeing as it's probably account-only (unlike Forza banning your whole console). Just create a dummy account, mod a car, enter it in a time/drift trial and see what happens.
Speaking of Forza...
I once had a credit mod on my otherwise legit account just to go in to the storefront and buy some liveries (not even Cars!) And it's funny because i didn't make the game any less fun to anyone, while all the real hackers, i.e jtaggers and such aren't getting banned at all.
Long story short, The next day I see a message telling me I am now console banned for life but weirldy only the storefront doesnt work fo me. Online racing and lobbies work just fine. Got to keep the credits tho