7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHNeed an in-tank fuel pump
Leading reported evidence
Replace pump
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Leading evidence: 'Replace pump' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace pump' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
if your just going to run a gasoline fuel you can even get away with the single pump inside the surge tank and run an aeromotive pump.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
if your just going to run a gasoline fuel you can even get away with the single pump inside the surge tank and run an aeromotive pump.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
If your sure the lines are adequate, maybe you can use the high volume GT2 pump?
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T133652Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My tune shop (fftec) had to give up after 452 HP because the fuel pump couldn't handle any more velocity. Does anyone know of an in-tank pump for a 2003 C4S that will handle more flow? I have the newer EV6 fuel injectors and the VFE supercharger. The pump suggested by FFTec was way too loud, a street pump that can increase flow by 20% would be optimal. Thanks :-)
I have the same car. Could you kindly post a pic?
Im sure some will say I give a bad opinion but would you be better to use what they suggest and find a way to make it less noisy?
If your sure the lines are adequate, maybe you can use the high volume GT2 pump? #996-620-057-91 (sorry, I dont have the specs)
Bosch -044 into place of the original one. Use the OEM plastic sump, just replace the pump. If you're not technically challenged it's Saturday afternoon's job with basic tools. And quite straightforward too.
The "Porsche OEM 996 GT2 High Flow Fuel Pump 01-05" sounds perfect! Vivid Racing has it for only $651.24, and I've worked with Dan Mermelstein many times in the past. I'll give the info to my shop. Thanks!
As for pictures, I don't think I have the proper permissions. But I'll walk through the steps if you can point me to the pics-for-dummies link...
just use one of these. Mine will be here friday. I'll post somebetter close up pictures for you. Your factory fuel pump just fills up the tank and the dual pumps pump from the surgetank to the fuel rail then it returns to the surgetank. if your just going to run a gasoline fuel you can even get away with the single pump inside the surge tank and run an aeromotive pump. I ordered the dual bosch 044 pumps like the picture below.
bty are you getting 452 whp off the dyno? do you have any graphs that you can share? also how many lbs of boost are you running?
here is another with similar setup
This is a source reference. Confirm exact model applicability in the original material.
