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oldman · 07-08-2020, 07:13 AM

I don't see how the DSX pump effects fueling, it turns on at say 5 PSI and supplies about 80 PSI of fuel, about the time when the stock pump is unable to maintain 80 PSI, I've looked at my fuel graph (low pressure side) hundreds of times, there is no big spike. The only caveat that I can make is I also installed a LT4 Low pump in tank. I also custom orders a 2 PSI turn op pressure.

The only way I can see the secondary pump effect tuning is if it were coming on late and you had a weak factory intake pump (early SS).

I've found DSX very supportive and a quality product.

07-08-2020, 07:13 AM	#19
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,322	I don't see how the DSX pump effects fueling, it turns on at say 5 PSI and supplies about 80 PSI of fuel, about the time when the stock pump is unable to maintain 80 PSI, I've looked at my fuel graph (low pressure side) hundreds of times, there is no big spike. The only caveat that I can make is I also installed a LT4 Low pump in tank. I also custom orders a 2 PSI turn op pressure. The only way I can see the secondary pump effect tuning is if it were coming on late and you had a weak factory intake pump (early SS). I've found DSX very supportive and a quality product. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.