injectors and speed density
 

I was thinking of upgrading to 24# injectors do you need to recalibrate anything with a speed density car?

Unless your making over 300 hp then keep your 19's and use a adjustable fuel pressure regulator.

Thanks for the info, what should I adjust the presure to?

Its hard to say every car is different in the range of 39-45 psi

Just FYI, you can put 24s in with your factory DA1 eec. The computer won't know they're 24s though and it will run them like they are 19s, but they will act like 24s. At first you're gonna be running pig rich, the eec is gonna take some time to learn and restrict the pulse on the 24s so that the A/f is right under normal driving conditions, however, at WOT (or anything over 3000PM) the eec basically disregards O2 readings anyway and the amount of fuel going into the motor is going to be determined by fuel pressure and injector size. That's how i plan on running the turbos on the stock 88eec. Lots of fuel pressure and an FMU will spike the line pressure to the point where it's forcing enough fuel for me to put in the amount of air I want to be pushing.
It's an old school trick, low tech, and you'll have a billion people tell you not to, but it works.

Thanks for the info!