Mega squirt in 78SC

[TargaWoods]

Installing a MS1 in a 78SC.

So far have all the wiring and vac lines routed.

I’m currently trying to figure out how to connect in my fuel pressure reg and the mega squirt to the engine.

So far, the two ways I can think to route them, are either a vac line coming from throttle body, going to a tee w the FPR and ECU both coming off the same Tee.

Or, running an individual isolated line to both the FPR and ECU,

I don’t know if it matters so long as everything gets /a/ vacuum, or if it does, which path is better.

[trond]

should be no difference between the two.... I'd use a t (seem to recall there is only one vac signal in the throttle body, and that I made another myself. Just don't use the timed outlet for the distributor advance (if there is one)

[brighton911]

Agreed in no difference. Just make sure the vacuum takeoff is a full on, not ported. A simple test with a vacuum gauge will tell the tale. MS is a true adventure, I enjoyed the journey.