I just got done putting a ported SC on my car. The issue at first was that it was a 97 SC and I have a 99. I blocked the vacuum ports that were not being used on the front of the SC, and used all my other existing parts. My car is now running about 300 rpm more at idle and it threw a P0507 code.

Is there anything else I'm missing? is there any difference in using a 99 throttle body with a 97 SC housing? EGR? or Vacuum port I'm missing?

Never mind, New IAC and PCM reset and its running better, hopefully it fixed it.

Still having the same code, Can anyone help?? P0507. Is there any vacuum ports i'm missing? I'm pretty sure its a Vac leak.

Someone, Annyone.

spray some carb cleaner around the base of the sc and around the cavuum ports on the blower and tb. That'll tell you where your vac leak is when. Engine rpm will change when you spray near the leak

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Mods include-
Pulley boys 3.2 pulley, 20* timing, HPTuned, pacesetters, SSIC, modded 1.9's, F/R STBs on Don Rome brackets, 255lph pump, ZZP billet rails, GXP catback
Best of 13.4 at 103.... 12's this year