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Fixed the problem here. Vacuum leak. But now Rev is bouncing between 1k and 2k when in park. Ideas??

Installed j37 IM & TB & P2R manifold spacer on j35z2. Getting a MAP PSI of -8 to -10% and LTFT of 7-8. I didn't think I'd need to tune for this install. Do I? And if so, what should I do to correct this?

Great. Thank you for your help. I'll take a look.

Do you recommend any sites in particular?

Where could I learn about all this? I understand consulting a pro is the right thing to do and I likely will, but I'm also eager to learn how to do it myself.

As the title indicates, looking to upgrade to larger injectors. Can I tune for this and if so, how. Sorry in advance for my naivete.