They are both capable of doing the job. I’ve seen 1st try’s handiwork and Jeff is a knowledgable guy. I’ve neve talked to Domination, but I know quite a few people who have had work done by them, and nary a complaint.
Is this for your Acura or the not-so-DSM? There is a lot more work involved with just slapping an intake manifold on. What will you be tuning with?
In order to properly run something like that (on the Acura anyway)…you need:
Throttle body bored open to match the IM (if you don’t you’re leaving a restriction, negating the flow of the IM)
Honda engines love opening the intake ports about .030 over the IM ports, to create an anti-reversion chamber so the motor can use the extra flow effectively
Assuming your fuel system is up to the task, which it most likely is, you should tune it right away. It’ll run rich as hell…washing the cylinder walls…killing effective ring seal…makes it run like total shit…etc.
Not trying to knock your plans, but it all functions as a system. You’ll actually lose power if you just throw it on, or at the very least shift your powerband out of the rev range your motor is safe/effective at.
What are plans for this motor?