bigantws6

iTrader: (12)

Idk what's making it pop and bog when I leave off the line
Only on dig run

607motorsports

iTrader: (6)

Have you checked your air fuel ratio or done any tuning since the pump install? When I installed mine it made it far more rich.

NOS LS1

iTrader: (3)

Lonnie... Nice talking with you on the phone...
Sounds like you design & build a great Dual in-tank Fuel pump system.
700 H.P. Fuel system would be perfect in my Pro Street Car.

djfury05

iTrader: (30)

Lonnie are you saying the bulkhead connector needs to be upgraded to this one? http://www.racetronix.biz/itemdesc.a...CA-F99&eq=&Tp=

Isn't that one stock on 99-02 Fuel pump modules/buckets? Or is there a better one out there to support the 340lph+ pumps?

Lonnies Performance

iTrader: (16)

That is the stock bulkhead.

djfury05

iTrader: (30)

Ok so where can we find the upgraded bulkhead then?

Racetronix

iTrader: (2)

This is the hotwire kit required for running anything larger than our FPA-001/A 255LPH fuel pump assembly. This includes the AM340 LPH and Racetronix RXP340 series pumps:
http://www.racetronix.biz/customkiti...=FPWK-017W&eq=

Please note, none of these pumps will support the jet-pump functionality of the factory module. This is explained in our FPA-001 ad here:
http://www.racetronix.biz/itemdesc.a...A-001A&eq=&Tp=

Holes will have to be cut into the module to allow fuel to enter. Once this is done adequate fuel will have to be in the tank at all times to prevent fuel starvation under cornering and acceleration. There is no baffling in the 99-02 plastic tanks.

The factory return system and regulator can NOT handle the fuel volume of our 340LPH pumps. Even with our standard 255LPH systems there is a pressure rise of apx. 4-6PSI above the factory regulator's setting of 58PSI. Installing a 340LPH pump will push this upwards of 70PSI which will cause tuning problems and pre-mature pump failure.

WE WILL NOT WARRANTY ANY PUMP THAT FAILS DUE TO INADEQUATE WIRING / VOLTAGE SUPPLY OR EXCESSIVE OPERATING PRESSURES.

HioSSilver

iTrader: (8)

What pump is recommended for about 600whp? How much power can be made on the stock lines of a 4th gen?

djfury05

iTrader: (30)

Thank you Racetronix!!

Hio - I will be going with a 340lph pump to handle about 620 rwhp with ease. I believe the 255lph pumps max out around 550rwhp.

RENE'S RAGE

iTrader: (96)

What upgrades do you have to do, to run the 340 pump.
Thanks

djfury05

iTrader: (30)

(1) - Aftermarket fuel pressure regulator since the stock one in-tank won't be able to keep up.
(2) - Upgraded wiring harness with new bulkhead connector Racetronix posted above.
(3) - Need to run a -6an return line to the return port on the bucket and remove the stock regulator.
(4) - Need to either run a new -8AN feed line or you can use the stock line and find a fitting to cap off the port on the T junction where the lines split apart near the fuel filter and return line.

Teflon/PTFE lines are suggested.

RENE'S RAGE

iTrader: (96)

So basically, the same upgrades as the dual Walbros.
Thanks

lilblackLT1

iTrader: (5)

Does anybody have an exact parts list for this?
I want to use my stock feed lines with a -6 to return port on fuel bucket.

So far I will need:
1. RACETRONIX 340 LPH PUMP
2. Hotwire kit (with different bulkhead connector to carry more current?)
3. Few feet of -6an line to go to factory return port
4. AN to quick disconnect fittings
5. Fuel regulator (for high pressure)

Anything else let me know and i will add it to list so i can put my fuel system together. I will also take a ton of detailed pics and try to get it put up as a sticky, I'm sure there is plenty of people who want to do this.

djfury05

iTrader: (30)

Forgot to add if you run a new -8an feed line you will need an inline filter.

Racetronix

iTrader: (2)

Or adapter fittings to utilize the factory in-line filter.
The factory feed line and filter are fine.

01cherryreds10

iTrader: (9)

Will the C5 regulator handle the 340? That's what I have in my swap right now and put down over 400rwhp and has lasted so far

I love the Aero 340 vs my Walbro 255. I remember reading somewhere the 255's were built overseas and are garbage compared to what they used to be. Mine burned out after a year and that was with a hotwire kit

Racetronix

iTrader: (2)

The C5 reg will not handle the fuel volume of a 340LPH pump. A significant pressure rise will occur if a 340LPH pump is used. The C5 return is also too restrictive.

A AM340 can not be used in a C5 or C6 module properly. There is no (provision) for a jet-pump so the module will not fill up when the tank level is low. This is required b/c there is no baffling in the C5/C6 tanks.

Walbro pumps are made in the USA. AM pump are made offshore.

Using a standard Walbro 255LPH pump in a C5 module can cause the pump to fail pre-maturely.

HRHohio

01cherryreds10, what's your fuel setup? How long has the AE 340 been in?
Thanks!

HioSSilver

iTrader: (8)

ok thanks. I have a ls7 to put in. It's been rebuilt back to stock but I may need a little headroom for later mods.

01cherryreds10

iTrader: (9)

It's an Aeromotive stealth 340 in a Racetronix Grand National fuel sender, plumbed with -6an to a C5 regulator/filter, then through -6 to the Torrent billet fuel rails to my 36lb Bosch injectors

This is not in a GM fuel sending module, this is in a G-body EFI module and the tank has baffles in it.

I have had issues with my Walbro and bought it from a reliable source, although not a big name or Performance oriented store...
https://ls1tech.com/forums/fueling-i...rs-beware.html

I dunno it's held up pretty good so far after a year of driving and about 10 passes at the track and it's holding up well for others...
http://forum.grrrr8.net/showthread.php?t=28447

This is all on the untouched Painless wiring that was in my kit, and that is definately not 10g from the fuse block to the pump like the hotwire kits are. Although I will be taking care of that eventually

Maybe I'm just doing something wrong though