SMG Big Boy drop in Low Side Pump... - Page 2

asthmamax11 · 09-07-2023, 10:15 PM

Quote:

Originally Posted by KingLT1

So we ended up removing the SMG pump, reinstalled the LT4 along with adding a DSX Aux pump. The car now has plenty of low side.

LT4 intank AND the Aux system ?

That wasn't overkill ?

KingLT1 · 09-08-2023, 09:40 AM

Quote:

Originally Posted by asthmamax11

LT4 intank AND the Aux system ?

That wasn't overkill ?

LT4 in tank and JMS was installed before heads/cam/3-4 psi more boost and not enough. He originally didn't want to tap the tank so the lt4 was replaced with the SMG pump. Imo the SMG pump isn't any better than a LT4 with JMS. So he put the LT4 back in and installed the DSX. This setup is good for 1000whp on E60 if he decides to go that far.

Megahurtz · 09-09-2023, 08:23 AM

Quote:

Originally Posted by KingLT1

P2635- Fuel Pump 1 flow insufficient.

You can actually disable this code. It's usually required to be disabled with the DSX aux kit. You can do some tweaking of the stock fuel pump to reduce the chances of the code with the DSX, but it makes no sense that the drop in pump would trigger the code since it is the only source of the fuel pressure.

KingLT1 · 09-09-2023, 08:40 AM

Yeah, after some further research I found that it was a nuisance code that usually only presents itself with aux kits. I did disable it and had it working with the JMS but it still would barely keep up when the temps dropped into the lower 70's.

Megahurtz · 09-09-2023, 08:44 AM

Quote:

Originally Posted by KingLT1

Yeah, after some further research I found that it was a nuisance code that usually only presents itself with aux kits. I did disable it and had it working with the JMS but it still would barely keep up when the temps dropped into the lower 70's.

Bummer, hopefully someone will have a viable plug and play drop in solution soon.

KingLT1 · 09-09-2023, 10:06 AM

Quote:

Originally Posted by Megahurtz

Bummer, hopefully someone will have a viable plug and play drop in solution soon.

Hoping Katech's pump answers that call!!

asthmamax11 · 09-09-2023, 04:09 PM

Good info King
Thanks for follow ups

09-09-2023, 08:40 AM	#18
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,800	Yeah, after some further research I found that it was a nuisance code that usually only presents itself with aux kits. I did disable it and had it working with the JMS but it still would barely keep up when the temps dropped into the lower 70's. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

09-09-2023, 04:09 PM	#21
asthmamax11 Drives: 1SS Summit White 6 speed Join Date: Jul 2017 Location: Gainesville GA Posts: 579	Good info King Thanks for follow ups __________________ 16 1SS M6 White Magnuson 2.3 Heartbeat Roto Fab Solo Performance Cat deletes and Axleback Hurst short shifter #'s coming soon Riaction coilovers 1LE sway bars BMR mm BMR chassis brace Flow one 19" wheels wrapped in Mickey Thompsons 02 Z28 M6 35th anniversary 80k miles T-tops Leather Bolt ons Joy to drive this classic every day! Daily Driver

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