I'm in this delema as well...to much to type here. Had 30 pounders, chip and a tune...never really got the tune thing worked out. Ended up putting the 19 pounders back in and pulled the chip...car is pulling much stronger and driveability is excellant. I go back to the tuner Wednesday with the 19 pound set up. We'll see how it does on the dyno and go from there. If the A/F looks good I'm probably just going to leave the 19 pounders in there and either sell the injectors and chip or save them for another upgrade...i.e. supercharger.
I believe that the 19 pounders are enough for my set up...seen a number of folks here on the corral making 300RWHP with them..guessing I'm in the 275RWHP. I'm not saying that 30 pounders can't be tuned to work but the throttle response, drivaeability, etc. with the 19's is really good.
Keep in mind going with 30lb injectors is expensive...$250 for new injectors, $40 cal tube, and around $600 for the tune (chip, dyno, tax, etc.). My advice is to put the 19's in and spend a couple of buck on the dyno pulls...if the Air/Fuel looks good call it a day and use the $750 ($900 parts-$150 Dyno) for something else.
P.S. I have/had the C&L meter with the 30lb tube...you'll hate it and need a tune...others will tell you to ditch the C&L...do a couple of searches and you'll find company.
Tubular Intake, GT40 Al Heads, 65MM TB, Buddy Rawls Cam, 190lph Pump, 19lb's w/SCT tune, Scorpion 1.72 Rollers, Sportline Springs, MM Subframe Connectors, Lower Control Arms & Caster Camber Plates, FMS Front & Rear Upper Control Arms, Tokico Blues. 267HP and 322TQ at the wheels