Throttle Body Bolt Torque

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Hi,
This is using the stock DBW TB with a spacer plate running longer than stock fasteners.. No additional spec’s?
As I’m uncertain of your fastener material or additional length, I’d stick with OE spec’s, after preparing the o-rings, gaskets (if any).& seal surfaces.
Be 100% certain no binding exists between TB butterflies and spacer bores before starting Engine. Last spot you want sticking.
First pass of two after bolts are just snug moving in a crisscross pattern, torque to 7.4 Ft/lbs (or 89 in/lbs,10NM).
I run an additional 1/4 turn, depending on fasteners and length.(?)
Good luck!
-John