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JamesZL1 · 01-17-2015, 07:24 PM

I have a A6, see mods below. I recently found out that with the 2.5 Upper and the 9.55 Lower, My car was sucking the fuel lines dry. I am lucky that I did not blow up my motor, I did melt several plugs. If you try to do a pulley combo or go much above 600 RWHP, you will have to change out the fuel system. Right now I am trying out a Boost a pump from lingenfelter. I have had a lot of people tell me that will not fix my fuel issues, so I might have to upgrade to a Squash Fuel system or something compatible. make sure you keep an eye on that fuel pressure, it needs to be as close to 65PSI as possible,mine was falling to 40 and that is no bueno. Just wanted to throw that out there, This last upper pulley swap is costing me a lot of money now that I have to upgrade the fuel system.

01-17-2015, 07:24 PM	#14
JamesZL1 Drives: 2013 ZL1 A6 Camaro, 2015 C7 A6 Z51 Join Date: Apr 2014 Location: Oklahoma Posts: 396	I have a A6, see mods below. I recently found out that with the 2.5 Upper and the 9.55 Lower, My car was sucking the fuel lines dry. I am lucky that I did not blow up my motor, I did melt several plugs. If you try to do a pulley combo or go much above 600 RWHP, you will have to change out the fuel system. Right now I am trying out a Boost a pump from lingenfelter. I have had a lot of people tell me that will not fix my fuel issues, so I might have to upgrade to a Squash Fuel system or something compatible. make sure you keep an eye on that fuel pressure, it needs to be as close to 65PSI as possible,mine was falling to 40 and that is no bueno. Just wanted to throw that out there, This last upper pulley swap is costing me a lot of money now that I have to upgrade the fuel system. __________________ Roto-Fab CAI, Texas Speed Headers, Texas Speed X-Pipe, Texas Speed LS3-B Blower Cam, Metco 9.10" Crank Pulley, Metco 2.5 Upper Pulley, ID 850 Injectors, LPE Ported Throttle Body, Alky Control Methanol kit, E2 Catch Can, 610HP / 608 Torque.