That is a damn hack job, right there!Originally Posted by mgoblue
The fuel pump was pulled this morning...I'll just copy and paste from the email I received
Nothing like using a plumbers copper water line for your hard flex line.
Someone needs their ass kicked for that...
SOLD - 03 RS6 Avus (905355)
Current - 03 Toyota Tacoma 4x4 double cab - the YETI, lifted, winched, snorkeled, lockered, skidded, geared
I'm pretty sure that's fuel resistant plastic and is stock. B5 S4 for reference:
2012 Q7 TDI S-Line - 2010 GTI - 2007 A3 3.2 S-Line - 2003 RS6
2001 Honda S2000 - 1977 Honda CBR 750-F2 - 1965 GMC 1500 WideSide
Alright guys back up a minute.
This is a Bosch 044 pump from INSIDE the tank, correct?
Because if so this is all kinds of f'd up because that is the transfer pump. The Bosch 044 pump should be installed in place of the fuel pump that is mounted to the underside of the car. The one close to the fuel filter.
Unless you have 2 Bosch 044 pumps (one inside, one outside), then the problem is you are feeding the stock pump lots of fuel, but the stock pump can't do anything with it above what it normally does......leading to your lean condition.
Last edited by marklar182; September 25th, 2012 at 23:20.
2008 A4 2.0TQ Quartz Grey Metallic S-Line/Titanium Package
2017 A4 2.0TQ Glacier White Metallic Prestige Sport
2003 RS6 TOTALED.-----Searching for a replacement
Well that doesn't surprise me. I mean that in a sense that I was constantly looking for lean conditions, and was told by dion that the tuner " didn't knwo what he was doing." I spent $ on Bosch ev14, only to remove them, new MAFs, more $$$$. Sorry for this. Some know privately that dion and I don't talk anymore, and this had to do with quality of of some of the work. Hell I even called and spoke to dahlback directly and he was surprised I was reading lean....there are posts here.
I hope and know tony will straighten this out. Sorry for the hassle.
stephen
Ebony/Black, DBR Stage 3 race kit, -SOLD :( 996TT Proto 650 basically a sardine can with a rocket attached to the back...11' CTS-V, 540/579RWP hehehehe ;)
The fuel line choice is the only thing they did right on that install. I would never use another 044 pump in-tank again. I went through two in my B5 S4 in 18 months and went to an RS4 unit. Perhaps they work great inline, but I had nothing but issues trying to run them in-tank.
03 Audi RS6
99 Porsche 996 Carrera
01 Audi S4 Casa Avant
95 Audi S6 Avant SOLD
95 Audi S6 rs2'd SOLD
01 A6 2.7T SOLD
Ahhh red herrings aside. Has anyone looked into the fuel line size to determine if enough volume can flow to the 4.2tt when larger turbos are added? There is a formula out there to determine the flow/volume needed to supply x hp on a 4.2 platform.
Those fuel lines look very small in diameter. I just know what I had to do in other projects to supply ample fuel volume.
700hp is like feeding a hungry elephant
This reminds me about the RS owner in Dallas that had MTM dealer in FL do tons of upgrades just to find out that guy had no idea how to tune. No idea at all. Plain idiot.
Somewhat relevant/concurrent thread on the subject of fuel pumps in series, pump boosters, surge tanks . . .
http://www.audizine.com/forum/showth...h-in-tank-pump
2012 Q7 TDI S-Line - 2010 GTI - 2007 A3 3.2 S-Line - 2003 RS6
2001 Honda S2000 - 1977 Honda CBR 750-F2 - 1965 GMC 1500 WideSide
fuel pressure vs volume
graph it
love it
take a world class sprinter and make him take air in thru a 1/8in straw. At a given pressure you can try to cram more volume in the lungs but the volume is fixed at each pressure level due to the size of the straw. Make sense
We have a fpr with a fixed setting for pressure and if the lines are too small your volume is litterally capped.
Unless the pumps are unable to maintain the pressure the max volume is determined by the size of the lines.
Our fuel systems were desiged to flow enough fuel for 450hp. You wish to make 700hp? Better design a complete fuel delivery/return system that is capable of delivering volume.
Last edited by QuattroRS; September 26th, 2012 at 06:10.
Perhaps a email/call to MRC in UK might be beneficial or even Gumpert???
IIRC, MRC had two fuel lines into the fuel rail (one line on each side but not isolated) for the C5 RS6 that make those crazy HP/TQ numbers.
Where is Amanda when we need her?
SOLD - 03 RS6 Avus (905355)
Current - 03 Toyota Tacoma 4x4 double cab - the YETI, lifted, winched, snorkeled, lockered, skidded, geared
According to Rich at EPL, they've had good luck with the stock RS6 fuel pump on quite a few high HP applications.
My understanding was the 044 runs in tandem on this application, unfortunately u trust a mechanic who says he had done original DBr stage 3 to install correctly on my set up, not the case and now u are having to deal, sorry. On bright side, and TTboost's had a tony tuned RS6 and great power .... I am sure tony will make great numbers even with stock fuel set up. On hi HP Porsche applications, ie 1000whp guys run stock pump in tank to reservoir then run 2 parrellell 044 with larger diameter fuel lines feeding each each rail.
Ebony/Black, DBR Stage 3 race kit, -SOLD :( 996TT Proto 650 basically a sardine can with a rocket attached to the back...11' CTS-V, 540/579RWP hehehehe ;)
The 044 does run in tandom with the stock pump, he just put the 044 in the wrong place!
The 044 and a 5bar FPR will provide plenty of fueling to the rails.
2008 A4 2.0TQ Quartz Grey Metallic S-Line/Titanium Package
2017 A4 2.0TQ Glacier White Metallic Prestige Sport
2003 RS6 TOTALED.-----Searching for a replacement
The final tune is done
Last edited by mgoblue; October 5th, 2012 at 21:29.
Good lord, monster numbers! Nice!!!
Ace/Edge TC - Tozo Trans - MTM TCU - REVO/ME7 tune - Wagner IC's w/ Venair Hoses - Aux Radiator delete - Hotchkis Sways - Hawk HPS Pads - Koni Sport Struts - Scroll KO4 Turbos - Devil's Own WM - 421whp/452wtq on Mustang Dyno - http://www.audirssix.com
That is f-ing CRAZY.
Bravo.
Avus Silver RS6 - Viper Stage 2 ECU/TCU - Water/Meth Injection - Frozen Rotors - Hbars - clear corners - Hella smoked tails - gutted precats
Some serious numbers.
Hmmmm, that's crazy how the torque peaks so high that early. Might it be better to not hit so high, drop the boost a bit, and get that curve too elongate more with your hp? I'm amazed the bigger turbos hit full spool so quick, damn, amazing numbers indeed. Just thinking that a better matched curve might give you a better overall run, though might not knock your socks off as muchThanks for posting! Glad you've got an updated TC and Trans also, Level 14 it was?
Ace/Edge TC - Tozo Trans - MTM TCU - REVO/ME7 tune - Wagner IC's w/ Venair Hoses - Aux Radiator delete - Hotchkis Sways - Hawk HPS Pads - Koni Sport Struts - Scroll KO4 Turbos - Devil's Own WM - 421whp/452wtq on Mustang Dyno - http://www.audirssix.com
They plan on road testing it for a few days and tweak from there. I was more curious why the boost was tapering off, I like the numbers, but it's not quite as linear as I had imagined.
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