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      07-11-2020, 01:49 PM   #1
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Spool Performance HPFP now available for the S55!

The elegant fueling solution weve been waiting for. No more PI fueling, no more PI controllers, no additional 6 injectors...the first of 2 different brands of upgraded HPFPs for the S55 is now available...XDI being the other brand. Just wanted to share as weve been waiting for a HPFP release for years.

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      07-12-2020, 04:24 PM   #2
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Pricing on it?
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      07-12-2020, 04:32 PM   #3
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Please do yourself the favor of researching this product on a N54 fourm site. Might make you think twice on it. Could be great but i know the "solution" they made for the 335i had its fair share of issues.
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      07-12-2020, 04:39 PM   #4
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      07-12-2020, 08:29 PM   #5
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Looked into what you referenced and it seems as if that was n54 fuel system specific, as the whole n54 HPFP system is a little dicey.

On price, yeah its a grand over PI I believe, but we have two fuel pumps so the cost will clearly be double of a single HPFP car/engine.

For what its worth, I do plan to wait for the XDI kit!
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      07-12-2020, 11:05 PM   #6
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Quote:
Originally Posted by RSXDC5 View Post

For what its worth, I do plan to wait for the XDI kit!
Also waiting for the XDI kit
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      07-13-2020, 04:30 PM   #7
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Anyone know about how much power can the XDI support on full E85?
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      07-13-2020, 07:54 PM   #8
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Whats better about XDI? If anything I heard the opposite actually
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      07-13-2020, 08:49 PM   #9
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Whats better about XDI? If anything I heard the opposite actually
Nothing yet, neither system is out in the wild, that I know of. Until we have some cars using them, we just don't know. Don't forget we'll also need BM3 or some other tuning suite, to support the pump.
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      07-15-2020, 09:39 AM   #10
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I’m going to be going one of the two routes ASAP. Need more fuel to support e85 and more boost, then I can use meth for cooling only.
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      07-20-2020, 09:03 AM   #11
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Excuse me if it's a stupid question but would these upgraded HPFPs improve anything with the pump gas(91 or 93)?
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      07-20-2020, 09:55 AM   #12
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      07-22-2020, 01:27 PM   #13
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any updates on this? anyone try out the kit yet? how beneficial is this kit without upgrading injectors?
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      07-23-2020, 01:35 AM   #14
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I'd rather wait for xdi
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      09-04-2020, 09:24 PM   #15
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anyone running this kit? or any update on the XDI one?
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      09-04-2020, 10:18 PM   #16
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BM3 added a nice easy toggle for Spool pumps recently so if you switch to these pumps you can just change it easily and run it even on the stock map. To make power gains with it though best to get a custom map for what you need from your setup.
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      09-05-2020, 10:29 AM   #17
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Quote:
Originally Posted by chewbakam4 View Post
BM3 added a nice easy toggle for Spool pumps recently so if you switch to these pumps you can just change it easily and run it even on the stock map. To make power gains with it though best to get a custom map for what you need from your setup.
With a custom tuning, do you think that they would provide substantial gains on pump gas(93) as well? My car is at 70k miles and I was thinking soon I may need to change the HPFPs anyways so maybe I will go ahead with these upgraded ones...also, in the power equation I wonder if the first constraint would be the injectors or the pumps.
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      09-05-2020, 01:06 PM   #18
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Quote:
Originally Posted by CAOZKAN View Post
With a custom tuning, do you think that they would provide substantial gains on pump gas(93) as well? My car is at 70k miles and I was thinking soon I may need to change the HPFPs anyways so maybe I will go ahead with these upgraded ones...also, in the power equation I wonder if the first constraint would be the injectors or the pumps.
What makes you think you need to replace your pumps?

From reading on the forums it seems that running E85 with Aftermarket Turbos can max out the fuel system. The underlying issue is that it's easier to release energy from Alcohol versus Petrol since the molecules are smaller, so you need more fuel and air to get the job done. That's when guys start adding Methanol via bungs or PI to add more fuel. Hopefully running aftermarket HPFPs and injectors will allow the fuel system to "keep up" with the aftermarket turbos.

I saw that F80Paul has a setup to run straight Methanol for fueling using the OEM fuel system plus adders (bungs/PI). With aftermarket HPFPs it should be possible to get much more fueling via the (highly accurate) direct injectors before we need to add bungs/PI. This is just the fueling aspect. Some may still want bungs for cooling the charge air.
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      09-05-2020, 04:03 PM   #19
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Quote:
Originally Posted by TopJimmy View Post
Quote:
Originally Posted by CAOZKAN View Post
With a custom tuning, do you think that they would provide substantial gains on pump gas(93) as well? My car is at 70k miles and I was thinking soon I may need to change the HPFPs anyways so maybe I will go ahead with these upgraded ones...also, in the power equation I wonder if the first constraint would be the injectors or the pumps.
What makes you think you need to replace your pumps?

From reading on the forums it seems that running E85 with Aftermarket Turbos can max out the fuel system. The underlying issue is that it's easier to release energy from Alcohol versus Petrol since the molecules are smaller, so you need more fuel and air to get the job done. That's when guys start adding Methanol via bungs or PI to add more fuel. Hopefully running aftermarket HPFPs and injectors will allow the fuel system to "keep up" with the aftermarket turbos.

I saw that F80Paul has a setup to run straight Methanol for fueling using the OEM fuel system plus adders (bungs/PI). With aftermarket HPFPs it should be possible to get much more fueling via the (highly accurate) direct injectors before we need to add bungs/PI. This is just the fueling aspect. Some may still want bungs for cooling the charge air.
From what you wrote, I'm inclined to think that it's more methanol & E85 related and with pump gas and custom tune, HPFPs are not going to change much? I'm living in Italy and we don't have E85 here and I don't want to go through the hustle of mixing ethanol or procuring methanol and ethanol. I'm just looking for a way to make more power with my upgraded turbos and pump fuel..
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      09-05-2020, 06:18 PM   #20
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Quote:
Originally Posted by CAOZKAN View Post
Quote:
Originally Posted by TopJimmy View Post
Quote:
Originally Posted by CAOZKAN View Post
With a custom tuning, do you think that they would provide substantial gains on pump gas(93) as well? My car is at 70k miles and I was thinking soon I may need to change the HPFPs anyways so maybe I will go ahead with these upgraded ones...also, in the power equation I wonder if the first constraint would be the injectors or the pumps.
What makes you think you need to replace your pumps?

From reading on the forums it seems that running E85 with Aftermarket Turbos can max out the fuel system. The underlying issue is that it's easier to release energy from Alcohol versus Petrol since the molecules are smaller, so you need more fuel and air to get the job done. That's when guys start adding Methanol via bungs or PI to add more fuel. Hopefully running aftermarket HPFPs and injectors will allow the fuel system to "keep up" with the aftermarket turbos.

I saw that F80Paul has a setup to run straight Methanol for fueling using the OEM fuel system plus adders (bungs/PI). With aftermarket HPFPs it should be possible to get much more fueling via the (highly accurate) direct injectors before we need to add bungs/PI. This is just the fueling aspect. Some may still want bungs for cooling the charge air.
From what you wrote, I'm inclined to think that it's more methanol & E85 related and with pump gas and custom tune, HPFPs are not going to change much? I'm living in Italy and we don't have E85 here and I don't want to go through the hustle of mixing ethanol or procuring methanol and ethanol. I'm just looking for a way to make more power with my upgraded turbos and pump fuel..
Just go for a Custom Cary/Paul tune if you want to maximize output of pump fuel and upgraded turbos.
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      09-09-2020, 04:37 PM   #21
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Any updates on XDI HPFP?
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      09-09-2020, 05:54 PM   #22
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Isnt this thread about the Spool product? Why ask about XDI here
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