I used to run my boost gauge at carb top but now i have moved it into the vacum line that runs into renix ignition ...... my dump valve also runs in this line. Just wanted to check if the gauge is reading ok or if i have plumbed it into the wrong place ..... At idle its reading about 20vac , then when driving and coming on boost its peaking at 11psi , so thats the boost, but when i back off it goes to 30vac and infact its bouncing on its limiter at the end there ........ does all this sound correct ???
I used to run 20psi carb top before on a Grp A carb , so im guessing thats probaly about 17/18 psi at manifold. Im now back to standard carb and gonna start increasing the boost soon once i have started modding the carb , just wondered what manifold boost pressure you guys were running ???? Deciding my max boost is my first decision i feel.