Fuel pressure w/staged pumps

H8TOLUZ

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kansas
E85 Running dual stealth 340's in stock cobra hat so running (2) -6 out about 12" to Y block then -10 fuelab and rest of the way up. Running big Holley regulator then Y's out after reg to -8 to each aeromotive rail. -8 return all the way to the hat and then -6 fitting on the hat to dump in. I'm running dead head setup basically running reg before rails and returning fuel before rails with just dead head to rails. I have pumps staged with 2nd one coming on about 4# of boost. Running 10# total.
 

H8TOLUZ

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Established Member
Joined
Aug 21, 2013
Messages
186
Location
kansas
Now with that said I have a few issues. At idle even with reg cranked all the way in I can't get over 40psi. As I start accelerating in let's say 2nd gear pressure starts dropping to round 35 then when 2nd pump comes on instantly get about 60psi. I have huge wiring to pump with 30amp relay on each pump. The problem is it's kinda making it hard to tune. Any ideas?
 

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