SMG Big Boy 6G

[vwslammedvw]

Who has successfully used the SMG big boy fuel pumps for 6th gen camaros?
I'm seeing a trend up top 7000+ these pumps seem to fall off hard when not even nearing the 5bar regulation pressure they hound you about when buying the pump.
Setting a flat 50psi Engine/FSCM/CCM works well on the handful of bolt on zl1s Using E85 blend without any issues not passing 7krpms, but on a high revving N/A car past 7000 these pump start to drop fast dropping rail pressure and driving MS up.
Has anyone used this pump on a high-rev setup expiring any issues?
LT4 low side pump was a rockstar prior to swapping zero issues all the way to 8,100

Log screen shot is MAFless N/A car dropping down to low 30s from 45-50PSI after 7k rpms
https://smgspeed.com/products/click-...y&_ss=e&_v=1.0

[Joshinator99]

Who has successfully used the SMG big boy fuel pumps for 6th gen camaros?
I'm seeing a trend up top 7000+ these pumps seem to fall off hard when not even nearing the 5bar regulation pressure they hound you about when buying the pump.
Setting a flat 50psi Engine/FSCM/CCM works well on the handful of bolt on zl1s Using E85 blend without any issues not passing 7krpms, but on a high revving N/A car past 7000 these pump start to drop fast dropping rail pressure and driving MS up.
Has anyone used this pump on a high-rev setup expiring any issues?
LT4 low side pump was a rockstar prior to swapping zero issues all the way to 8,100

Log screen shot is MAFless N/A car dropping down to low 30s from 45-50PSI after 7k rpms
https://smgspeed.com/products/click-...y&_ss=e&_v=1.0

That pump isn’t worth the hassle based on this thread on Camaro6 forum:
https://www.camaro6.com/forums/showthread.php?t=618673

[vwslammedvw]

Looking like that. Just hope maybe there's some solution out there "smg" claims many tuners have tuned these pumps and work like intended but don't want to spill the secrets "how to" which is stupid for a company to sell a $600 brick. I think they are full of it and hope nobody else wastes their money on the pump.

[TriPinTaZ]

Yeah they seemed to avoid direct questioning about their pump and made general claims but users on Camaro6 had the same experience. Pump just tanks up top. DSX is coming out with a plug and play in-tank solution soon. I suspect it will be better choice.

[1scls1z]

Looking like that. Just hope maybe there's some solution out there "smg" claims many tuners have tuned these pumps and work like intended but don't want to spill the secrets "how to" which is stupid for a company to sell a $600 brick. I think they are full of it and hope nobody else wastes their money on the pump.

There are no secrets. I adjusted the settings for that pump every which way but loose. No dice for a H/C P1x LT1 @ 13 psi on E50. Hooked the JMS voltage booster back up and it helped but it still was not enough once the temps dropped below 70 outside. Put the LT4 back in, added the DSX Aux, and it has ALL the low side. So, it's not a tuning issue. That pump is about as capable as a LT4 with a JMS at best.