If we're talking butane, I'd think not really - once the cigar itself is lit enough, it will do its thing. However, depending on whether you use a single torch, soft flame, triple torch, that might impact how the cigar initially smokes/tastes until it works itself out.
Now, if we're talking a Zippo lighter or something that uses lighter fluid, then I think that can impart a flavor, at least for the first few draws.