Vortec and cam tunes

[kacy]

I think your exhaust smelled rich due to not having enough timing. Not enough advance, combustion cycle isn't completed on power stroke sending raw fuel out the pipe. Something that I noticed that I never paid much attention to on the last vehicle I tuned, your MAP at idle hits the 30 kpa range so yeah it's using the 16d of advance which IMO should be in the 20s. Also either your engine pulls a lot of vacuum or your MAP sensor is lying. While not having to deal with it, what elevation are you at?

I think the vacuum is so high due to the 1k rpm, I saw BLMS of 90 before I tuned it, it was just smell it was burning our eyes.