Question about base fp

[n20neenee]

IM base tuning my 89 P600b stang.
It has TFS all through it with 42lbs inj and roughly 12lb of boost. What should I start out with on my fuel pressure? Should I stick with 10 degrees of timing as well

[UNTCHBL]

Do you have a btm or anything? I would start timing out at 8 until I got a handel on things. I would start out at 40#'s for base, and go from there. Just listen for ping and check plugs.

[frdfandc]

I would do what was said above. Then get the car on a dyno to have it properly tuned to get the most out of your combo that you'd like to get. Tuning on a dyno is probably the best thing you can do. Just ask RdRunnr. He has a safe tune on his stang, while still putting out over 500 hp at the wheels.