Agreed but most folks with upgraded vtgs and 700 kits don't upgrade fpr. If you ran 5 fpr, not sure stock pump could keep up. Maybe I'm wrong but that's just my impression.

 

Fail safe? Is anyone running an inline pump running a fuel pressure fail-safe alarm?

I am looking for a nice LED + audible alarm for the cabin that could also trigger a relay to shutdown my ebc power if fuel pressure reaches a certain level. If the EBC is off, i will ride my .8 bar wastegates, for a bit more safety with no intervention.

Anyone have any products to suggest?

Thanks,

Tom

 

Same here. Without it that pump is VERY loud at idle! I knew when my buddies turbo drag radial car was coming to the line because I could hear the pump before his car LOL!

 

Good idea. After I got out of owning a shop It no longer mattered to me about what the almost general public was looking for in mods and I am just doing what I know to achieve my goals.

 

HAHA! the pump is so heavy and big that I was uncomfortable trying to mount it off some silicone tubing.

 

The highest demand is in the torque peak, most people like to rev to redline and you really never get back into the torque peak driving that way so your fuel demand is less. Not sure if that helps.

 

Thanks for the heads up! I will look into swapping them out. Is this important for the return line as well or should I just be worried about the feed? I didnt think it mattered with fluid but good FYI.

 

The entire feed side of the system is what I would classify as a critical detail.

You can get away with more on the return side but I try and just make it a practice to never induce any undue restrictions or turbulence into the system.

As a rule of thumb you want to use the least amounts of fittings as possible.
This is actually harder then it sounds and I go to great effort to minimize the number of fittings in any plumbing application. The 90* you used are not even allowed in my parts bin, there is always a better solution to using those.

on the tank hose that you have the 2 90* elbows. Remove both of them and the straight hose end. Replace with a radiused 90* hose end and connect it directly the the tank bung fitting. That will eliminate the potential problem shown in the pic.

 

Camo-cab, The return line is just as important to me for a few reasons, effects the operation of the FPR, and cavitation in the return line introduces bubbles in the fuel tank.

 

You will not get an argument from me. Although I see it all the the time in use and apparently some people get away with it for awhile you would never see that fitting anyplace on my car. I hate them so much I would not even use it on a gear box breather. LoL

 

TTdude

Stock 997TT comes from the factory with dual fuel pumps and are good up 83lbs injectors running @3.8bar FPR.

For running on E85 had to upgrade to the above injectors to satisfy the increased fuel need.

 

Personally I like the aeromotive line of fuel supply products and have used them for years on various builds. ( non Porsche )

Here is a good tech article that will help you understand needs to be considered when choosing a pump.
http://aeromotiveinc.com/2010/01/fue...nd-horsepower/

 

Thanks Venkat. Do you know the rating of the stock fuel pump?

The highest fuel demand should be at highest HP as fuel rate consumption increases with increasing rpm. At peak torque, you should see lowest BSFC.

 

HI,While the gauge was on it while during a dyno pull ,,,,it went from a peak of 70 and as it got into the higher RPMs it went down to 65....But I have EPL 72 injectors with stock FPR...

 

Peak torque is your peak VE also. thats is why it is your highest fuel demand.