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Old 06-20-2013, 02:11 AM   #1
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Default Who logs fuel pressure?

Seems like it is a good thing to monitor to warn if it is out of range.

If you do this already, what sender are you using and where is it mounted?

Just collecting ideas, it's not something I'd want to go wrong!

I'm thinking along the lines of a 0-150psi Honeywell sender mounted to the body with a rubber isolator, rather than the engine.
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Old 06-20-2013, 02:15 AM   #2
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GM sensor mounted to the chassis and wired to any 0-5v input.
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Old 06-20-2013, 02:58 AM   #3
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I want to log fuel pressure but didn't get around it it YET

$25 sensor, looks identical to AEM
Pressure Transducer or Sender 100 PSI for Oil Fuel Air | eBay
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Old 06-20-2013, 03:17 AM   #4
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Andrew when you say GM do you mean the ACDelco D1846A?

That $25 sensor looks interesting too!
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Old 06-20-2013, 03:43 AM   #5
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I use Wells PS421, which is a 1/4" NPT thread. Easier to find adapters for than the M14 stuff. 0-128psi range.
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Old 06-20-2013, 12:01 PM   #6
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I use an AEM sensor, which uses the standard metri-pak 150 3-pin connector. Easy to work with. Mounted directly to the aluminum fuel rail.

GM's look like an interesting option, and sure are a lot cheaper.
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Old 06-25-2013, 02:19 AM   #7
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Quote:
Originally Posted by soviet View Post
I want to log fuel pressure but didn't get around it it YET

$25 sensor, looks identical to AEM
Pressure Transducer or Sender 100 PSI for Oil Fuel Air | eBay
I ended up buying this pressure sender and it works great. Mounted directly onto the FPR where the gauge used to be. Hooked up to a spare ADC input in MS3. Steady 60psi base becomes 75psi pressure @ 16psi
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Old 06-25-2013, 02:21 AM   #8
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Nice!

It's funny you are running 4 bar base pressure, I was just asking about this in another thread.

How do you find the difference?

Cheers
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Old 06-25-2013, 02:25 AM   #9
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I raised base pressure from 3 bar (45psi) to 4 bar (60psi) and at idle, the engine pulls more vacuum than ever. It's definitely noticeable and I attribute it to better atomization and more complete burn.

It really is a question of what injectors you have. I have ID1000 and they love high pressure.
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Old 06-25-2013, 02:26 AM   #10
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I have their 715 (ID725), I would assume they are similar...
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Old 06-25-2013, 02:35 AM   #11
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yeah then you basically want to run the highest base fuel pressure that your pump can support @ your WHP goals.
I'd run 70psi but then at 25psi boost I would be at 95psi fuel pressure - my pump (DW300) maxes out at 100psi and doesn't flow enough at that pressure to support 400+ whp on E85
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Old 06-25-2013, 08:26 AM   #12
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I’m about to setup fuel pressure warning system for my Adaptronic. I already have an oil pressure warning with simple 0-5v pressure sensor connected to EGT input (only free 5v input)

I have DW300 feeding 800cc injectors at 85psi pressure. Injector DC is around 90-95% I need bigger injectors. I need these: Injector Dynamics - ID1300
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Old 06-25-2013, 04:52 PM   #13
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The new ID1300s are pretty much the ideal injector for 450+whp on E85. That much power on ID1000s required so much base pressure that a single DW300 couldn't keep up, which meant you needed a Bosch 044 to push the pressure up under boost. The 1300s let you run a more normal 60-70psi of base pressure and a single DW300 without hassling with twin pumps.

The fact that they're mfg'd specifically for ID by Bosch Motorsports is just the icing on the cake. All-stainless internals, designed specifically for alternate fuels. Very cool.
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Old 06-25-2013, 05:04 PM   #14
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ID1300 will be $195 per injector
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Old 06-25-2013, 08:20 PM   #15
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Gotta pay to play.
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Old 06-26-2013, 11:50 AM   #16
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Quote:
Originally Posted by Savington View Post
I use Wells PS421, which is a 1/4" NPT thread. Easier to find adapters for than the M14 stuff. 0-128psi range.
Description is "oil pressure switch", not sensor. Sure it's a pressure transducer?
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Old 06-26-2013, 09:14 PM   #17
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Quote:
Originally Posted by JasonC SBB View Post
Description is "oil pressure switch", not sensor. Sure it's a pressure transducer?
I see the LS1 sender being referred to as an oil pressure switch too even though it is definitely a linear 0-5v output.
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Old 07-01-2013, 11:47 AM   #18
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Quote:
Originally Posted by JasonC SBB View Post
Description is "oil pressure switch", not sensor. Sure it's a pressure transducer?
0.5v=0psi
4.5v=~120psi

Linear between the two.
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