Heavy gas smell..

[Swifty1638]

I was driving, and for some reason the gas smell i have had before seems to smell even more. My friend driving behind me one day said it smelt really bad, and I don't know what it could be. I checked the intake, right behind the injectors, but there is no gas puddles at all..I had recently tuned the car (advanced the timing, re-gapped the spark plugs-where off not at .028, but at .046) and it also DRINKS gas..here's the specs on the car..
1992 gsx
built motor
550cc injectors
ported n polished big 16g
fmic
ported 2g mani
3" downpipe/exhaust straight to magnaflow muffler-no cat or resonator
safc
tmo-gotta get the software on my laptop..
maft
etc etc etc..hopefully this is enough for you all..any ideas?

-A. Swift