[haywood11]

i have a 88 lx with cobra upper and lower gt40p heads bbk shorties, bassani x-pipe w/no cats and dynomax 2.5in. when i get on it i smell alot of unburnt fuel what could this be?

[notsoslow50]

possibly a faulty injector i would just start small. throw some injector cleaner in see what that does..did you change the injectors at all recently?

[haywood11]

no i did not but i still have speed density could that be the cause?

[88mysticgt]

I had the same problem when i put a new upper and lower on. Mine was a bad o ring on an injector. It wasn't sitting right in the intake and fuel was puddling on my lower. If thats the problem its a cheap fix.

[stang fanatic]

with the s/d you have to be altering vacuum to do it, and i dont see any mods to really do that. ensure your vacuum lines are correct, then proceed to cking injector seals. i also wouldnt think your exhaust setup has altered your O2 readings either.

[Black Five 0h]

if you put abigger maf on it you need to ge the computer calibrated, or maybe just the sensor on the maf