Damn Thermoquads.

Adding fuel here(pun intended).The twin ring boosters in qj and tq carbs give that crisp response , keeps it lean(economy) and adapts quickly to most driving situations.You are a metering rod change away from a good baseline(don t need to open carb)there is more but not going to go into details BUT then there is that secondary door....Like vacuum advance some disconnect as a reflex, try tuning it out, unless your racing a dominator and you got two throttle positions(idle and wot). Ther actually is some power in there also better economy and will recover quickly from a transition from part throttle cruise to passing(be it part or w.o. throttle)...Getting back to the air door , yes it takes time and patience to iron the bog out but it can be done (engineers that desinged it didn t just decide to invent something that wouldn t work)with very good results . The guys that call the qj the quadrabog usually try to make the door open too fast(they think mechanical secondary), don t treat it like that , you need to have a whole different approach to tune them . I like them on the street but on the track I would go with a holley , I always wondered about combining the two desings together , the sensitive primaries with (tq qj)with mechanical secondary holley???Oh another thing,tq has more fuel bowl than qj (to me that is the biggest shortcomming of the quadrajet)