GR Hatch: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85 - Page 77 - Subaru Impreza WRX STI Forums: IWSTI.com
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2014 DGM Sti  *IAG*KillerB*ID* 467WHP/485WTQ E85
2014 DGM Sti  *IAG*KillerB*ID* 467WHP/485WTQ E85
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Old 06-29-17, 10:21 AM   #761
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

What pump? And that thing should idle at 36 or 37 psi after it drops to 33% on fpump duty not 25....

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Old 06-29-17, 10:23 AM   #762
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

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Originally Posted by SlowInFastOut View Post
What pump? And that thing should idle at 36 or 37 psi after it drops to 33% on fpump duty not 25....

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AEM 320


And exactly, it's weird that it drops so low. I feel like that points to the pump not putting out enough flow.
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Old 06-29-17, 10:31 AM   #763
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

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Originally Posted by Joebie View Post
AEM 320


And exactly, it's weird that it drops so low. I feel like that points to the pump not putting out enough flow.
Both of my brand new AEM 320 fuel pumps failed.
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Old 06-29-17, 12:04 PM   #764
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

I could be wrong but i think i have herd of a couple of guys having issues with that specific pump. Didnt user1029 have something with that too???
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Old 06-29-17, 12:12 PM   #765
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

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I could be wrong but i think i have herd of a couple of guys having issues with that specific pump. Didnt user1029 have something with that too???
I don't think so, but he runs that pump. That is actually why I bought it was because of him, but yea, like I said. 2 of my failed before I switched to a hardwired 450.
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Old 06-29-17, 12:18 PM   #766
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

I use the aem 320 e85 pump in a twin pump hanger and never had an issue.

My suggestion would be to test the fpr and then test the aem pump. Or even test your fuel pump control module. Is your pump hardwired and bypassing the fpc? Or is it still running the fpc? Wonder if you may have fried the fpc with the amp draw on that pump.

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Old 06-30-17, 01:52 AM   #767
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

Quote:
Originally Posted by tylerandreas View Post
Both of my brand new AEM 320 fuel pumps failed.

Quote:
Originally Posted by SlowInFastOut View Post
I use the aem 320 e85 pump in a twin pump hanger and never had an issue.

My suggestion would be to test the fpr and then test the aem pump. Or even test your fuel pump control module. Is your pump hardwired and bypassing the fpc? Or is it still running the fpc? Wonder if you may have fried the fpc with the amp draw on that pump.

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Yesterday we tested the FPR by pinching the vac ref line, no change in base pressure (I.e. no fuel leaking from there). So we're at the pump now. I'll have a new one on Saturday.

Pump is hard wired, FPC is still active, however. We think the FPC is good because it still regulates the power to the pump. When the pump goes to 33% DC the pressure drops so it leads us to think the pump is the failing piece. If I did end up frying the FPC I will probably go with a FuelPro. Fingers crossed that it's the pump.




Side note, pressure today is lower than yesterday. AP shows FP didn't go over 39 PSI. 66% DC was around 30-34PSI in the brief glimpses I caught of it.
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Old 06-30-17, 02:26 AM   #768
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

If you replace the pump and it is still showing the same symptoms i would go straight to a fuel pro unit or the aeromotive equivalent. I prefer the fuelpro as that is what is in my car now.

It seems like you may want to think about an adjustable fpr and a fuelpro unit. Generally makes life easier. You cant really get the most out of that pump unless you have a controller that will put out the amps for extended periods of time.

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Old 06-30-17, 02:32 AM   #769
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

Quote:
Originally Posted by SlowInFastOut View Post
If you replace the pump and it is still showing the same symptoms i would go straight to a fuel pro unit or the aeromotive equivalent. I prefer the fuelpro as that is what is in my car now.

It seems like you may want to think about an adjustable fpr and a fuelpro unit. Generally makes life easier. You cant really get the most out of that pump unless you have a controller that will put out the amps for extended periods of time.

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100% agreed. I've been planning on redoing the fuel lines completely. I don't know if you saw the pics, but it pains me every time I look at them. I will go with an adjustable FPR for sure, then.

Also definitely going to look into the FuelPro either way. Just makes sense at this point, especially for how little it costs. You are going with the GTX35**R GII right??
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Old 06-30-17, 02:35 AM   #770
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Default Re: 2014 DGM Sti *IAG*KillerB*ID* 467WHP/485WTQ E85

Yep. Im doing the gen2 3576r in .82a/r with 4 inch inlet on speed density. Tune date is another 2 weeks. Missed the original date as i had missing parts. But she is pretty much ready to be on the dyno. I have to limit the car to 550whp and 30psi as i still have stock sleeves and unported heads with stock cams.

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