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2011 sedan pully headers exhaust
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Discussion Starter · #1 · (Edited)
My Car has a boost a pump with factory pumps been on it since i bought the car. and ive never been a fan of boost a pumps. Id like to upgrade fuel pumps was looking into the dw300 kit. And before everyone tries to crucify Me i tried to search and only found people getting yelled at for asking and other people having issues with them and fuel pressure and cel from fpcm. Question is what is the best way to go. Dont want to butcher anything up and dont wanna do this 5 times to figure out whats reliable either.. cars an 11 sedan about 630whp now on e85 and want room to grow to about 800. Plans on cam and heads this winter. What should i buy
 

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2012 Wagon A6
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You could add an AUX pump system like DSX and get a fuel hat from ALM.

I have the dw300 pumps and ALM stage 2 hat but my car is down for a motor build and havent had a chance to run it. If you go find Random84's build and start around post 1,174. He starts to do his fuel system as a whole with new lines from the tank. Right before that though he was running ALM stage 2 hat, aux pump system, 1300 injectors all through the factory setup and was right in the mid 700's on pump.

I think for what you are after, you have two options from what I gather on reading. (Not an expert though)

1) AUX kit in addition to factory pump and a new hat (mine cracked at the 90* fitting cuz plastic) or replace factory pumps with AEM or DW
2) As papi said above, go straight to a return system like FORE. You will get pumps, billet hat, lines, sensors, etc.
 
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2011 sedan pully headers exhaust
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Discussion Starter · #4 ·
Seems like thats the way to be reliable with 800hp on ethanol. Was hoping somone would reassure me the factory engineering with bigger pumps would cut it but apparently not.
 

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There's more options for return system now than last year, late spring, when I got mine.

Squash, ALM, and another module that I saw recently all have a bucket, which like stock, helps with fuel starvation when fuel level is low. And then there is Fore, which doesn't have a bucket and pumps just hang from the hat.

I bought the Squash module with wiring harness and sourced fuel lines and everything else separately.
 

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2011 sedan pully headers exhaust
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Discussion Starter · #7 ·
That deatschwerks kit looks like its only for the camaro not cts otherwise id be down to spend the extra for a all done and ready to drop in module with a bucket like that. I like the alm or squash but will i have the fpcm check engine light issue if i put bigger pumps like dw300’s on the factory wiring?. I cant get any answers on if thats a code that can be turned off with hp tuners or what has to be done there
 

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You could add an AUX pump system like DSX and get a fuel hat from ALM.

I have the dw300 pumps and ALM stage 2 hat but my car is down for a motor build and havent had a chance to run it. If you go find Random84's build and start around post 1,174. He starts to do his fuel system as a whole with new lines from the tank. Right before that though he was running ALM stage 2 hat, aux pump system, 1300 injectors all through the factory setup and was right in the mid 700's on pump.

I think for what you are after, you have two options from what I gather on reading. (Not an expert though)

1) AUX kit in addition to factory pump and a new hat (mine cracked at the 90* fitting cuz plastic) or replace factory pumps with AEM or DW
2) As papi said above, go straight to a return system like FORE. You will get pumps, billet hat, lines, sensors, etc.

Thank you, though I was over 800 RWHP on 93. Plenty of fuel for E60 but never dyno'd it. I think I was getting into high 90's on injector duty cycle on E60-E70, and combined with a smaller pulley I upgraded for safety.
 

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2011 CTS-V Coupe M
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My Car has a boost a pump with factory pumps been on it since i bought the car. and ive never been a fan of boost a pumps. Id like to upgrade fuel pumps was looking into the dw300 kit. And before everyone tries to crucify Me i tried to search and only found people getting yelled at for asking and other people having issues with them and fuel pressure and cel from fpcm. Question is what is the best way to go. Dont want to butcher anything up and dont wanna do this 5 times to figure out whats reliable either.. cars an 11 sedan about 630whp now on e85 and want room to grow to about 800. Plans on cam and heads this winter. What should i buy
I am personally running dual DW300c pumps with the 80-90PRV supplied in the kit and ID1050x injectors. In order to take advantage of this combination you must tune both the E67 and FPCM. HP tuner unlocked the FPCM about two years ago, costs an additional credit. If you don't tune the FPCM properly this setup will not perform well, the injector data needs to be changed, as well as fuel flow and pressure. I am able to provide steady fuel at 10.5 AFR, 1250lb torque, 60psi fuel pressure, 17lbs of boost WOT with no drop in fuel pressure and injector duty cycle at around 75%. The DW300c pumps are higher flow, so they do not require the same high pressure settings as the stock pumps at normal driving conditions, pressure and flow are proportional, that is why I am not a fan of pump boosters, plus, even with boosters, you still need to tune the FPCM in order to properly use them in a PWM fuel system.
 

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cannot or can access?
I'm pretty sure you can disable it in HPT now. I bypassed my FPCM and run AEMs straight off the JMS BAP with a pedal controller to ramp in/out voltage. Been fine for about year now.

Prior to, leaving the original FPCM in, I was blowing fuses and getting a CEL when I got into it.
 

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Yeah, that was the solution my tuner and I came up with when I kept popping that 30a fuse. Haven't had an issue since.
 

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I am personally running dual DW300c pumps with the 80-90PRV supplied in the kit and ID1050x injectors. In order to take advantage of this combination you must tune both the E67 and FPCM. HP tuner unlocked the FPCM about two years ago, costs an additional credit. If you don't tune the FPCM properly this setup will not perform well, the injector data needs to be changed, as well as fuel flow and pressure. I am able to provide steady fuel at 10.5 AFR, 1250lb torque, 60psi fuel pressure, 17lbs of boost WOT with no drop in fuel pressure and injector duty cycle at around 75%. The DW300c pumps are higher flow, so they do not require the same high pressure settings as the stock pumps at normal driving conditions, pressure and flow are proportional, that is why I am not a fan of pump boosters, plus, even with boosters, you still need to tune the FPCM in order to properly use them in a PWM fuel system.
I am essentially running this exact same setup, and make around 800 RWHP on ethanol. I street drive my car every day, as it's my daily. Has been working well for me for a couple years now.
 

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2011 sedan pully headers exhaust
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Discussion Starter · #17 ·
I am personally running dual DW300c pumps with the 80-90PRV supplied in the kit and ID1050x injectors. In order to take advantage of this combination you must tune both the E67 and FPCM. HP tuner unlocked the FPCM about two years ago, costs an additional credit. If you don't tune the FPCM properly this setup will not perform well, the injector data needs to be changed, as well as fuel flow and pressure. I am able to provide steady fuel at 10.5 AFR, 1250lb torque, 60psi fuel pressure, 17lbs of boost WOT with no drop in fuel pressure and injector duty cycle at around 75%. The DW300c pumps are higher flow, so they do not require the same high pressure settings as the stock pumps at normal driving conditions, pressure and flow are proportional, that is why I am not a fan of pump boosters, plus, even with boosters, you still need to tune the FPCM in order to properly use them in a PWM fuel system.
this is the info was looking for. Thank you. Also how long have you been running the dw300’s i hear theres reliability issues but i hear the same stories for aem pumps and some tuners wont even sell them..
Being an f body lover and kind of a purist i cant be the guy to cut a glory hole willingly in perfectly good floor for a fuel pump hatch so im doing it the hard way and would love more than anything to only do it once and be good to go for a while. And i hate pump boosters cause its one more thing that can fail with potential to really be catastrophic
 

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this is the info was looking for. Thank you. Also how long have you been running the dw300’s i hear theres reliability issues but i hear the same stories for aem pumps and some tuners wont even sell them..
Being an f body lover and kind of a purist i cant be the guy to cut a glory hole willingly in perfectly good floor for a fuel pump hatch so im doing it the hard way and would love more than anything to only do it once and be good to go for a while. And i hate pump boosters cause its one more thing that can fail with potential to really be catastrophic
You might be confusing the DW brand with AEM.

AEM are cheaper, have less output and have had a series of reliability issues here on the forum.

Sent from my SM-G991U1 using Tapatalk
 

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2011 sedan pully headers exhaust
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Discussion Starter · #19 ·
You might be confusing the DW brand with AEM.

AEM are cheaper, have less output and have had a series of reliability issues here on the forum.

Sent from my SM-G991U1 using Tapatalk
no i know the difference. Just wondering if its trash talk or bad customer service or what but theres alot of stories about dw and aem. Id assume somone wouldnof chimed in already if any of the walbro pumps fit in the factory bucket. Im also al for the alm hat
 

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I'm definitely happy with my ALM fuel hat. Quality piece. As far as the AEMs, mine were already on the car. They did throw a CEL before, but HP Tuners fixed that.
 
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