Phil, thanks. I'd need to see the fuel rail side-be-side to compare it to the 3.0L rail, so I don't know if it'll fit or not - or if it would offer any advantage. The 3.5L injectors are 240cc/min - same flow rate as I'm using now.

I took the blower and plenum back off today and found the leak - it's one of the joints where I tapped into the fuel rail. Risto (777) has had the same experience and found soldering to work..... I'll try some high silver content solder, braze all of the joints sometime this week and try again. I can't really evaluate/adjust the regulator until I get the fuel rail to hold pressure.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum