Randy
Charter Member
PM 2020
SM 2019
PM 2018
PM 2017
PM 2016
PM 2015
PM 2014
PM 2013
PM 2012
SM 2011
SM 2008
SM 2003
Full Member
No, the second pump is activated as boost increases, so you need to know about what psi of boost requires the need for the second pump. If your running a max of 7psi you may need it at 4 -5psi, if you max boost is 10psi you may need to bring it on at 6-7psi. and so on. A couple of runs monitoring air/fuel ratio and/or fuel trims will tell you.
You'll usually only need it when pushing the pedal past 60-70 percent or at WOT. If you run the two 255LPH pumps (510LPH assembly) you might need to bring the second pump on earlier than the 750 LPH assembly using two 340 LPH pumps.
And yes you 8-AN and run new lines to the fuel rail, you could just run an adapter off the stock fittings or drill that out and put a 8-AN bulkhead for a the new line.
You can build you own system below, knowing exactly what you need the hard part...
www.racetronix.biz
www.racetronix.biz
You'll usually only need it when pushing the pedal past 60-70 percent or at WOT. If you run the two 255LPH pumps (510LPH assembly) you might need to bring the second pump on earlier than the 750 LPH assembly using two 340 LPH pumps.
And yes you 8-AN and run new lines to the fuel rail, you could just run an adapter off the stock fittings or drill that out and put a 8-AN bulkhead for a the new line.
You can build you own system below, knowing exactly what you need the hard part...
Pressure Switches
Shop for Pressure Switches from top manufacturers like from a trusted source.
DIY Dual Pump Kit, GM SUV (DIYDPK-SUV): Dual Pump Kits (D-I-Y) | Racetronix
Purchase DIY Dual Pump Kit, GM SUV or shop other Dual Pump Kits (D-I-Y) and Racetronix products from Racetronix.
Last edited: