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      11-28-2018, 03:34 PM   #1
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Thumbs up *** bootmod3 *** XDI Fuel Pump (HPFP) Support - Now Available!

Hey guys, over the past year we've worked with a number of customers and shops that chose the XDI's high flow pump as their HPFP upgrade. They have two versions available, the XDI-35 and the XDI-60, both of which outflow the OEM HPFP pump on the N55.

As of now any bootmod3 user looking to go with an XDI HPFP upgrade can go into any of their maps (custom or OTS), use the map configuration screen and choose the appropriate pump from a dropdown of options, screenshot attached.

Note that simply installing one of these pumps and not making the changes will end up setting the car into limp mode (Drivetrain Malfunction) as well as throw various codes for fuel pressure so a map change is required to run them.

For all questions related to the pumps please direct them at TTFS (TuningTechFS) who have done a great deal of work with XDI to make this upgrade happen when it comes to fitment and R&D and they're best to answer any questions. We're simply adding software support for the pumps to make the solution as Plug'n'Play as possible. We have seen a considerable improvement over the stock N55 pump on an M2 while tuning with TTFS end of last year and more recently on an N55 PWG car (both come with the same OEM HPFP pump).

Here's a log of the N55-PWG car running the XDI-35 pump. As you can see there's no pressure drop at the HPFP

XDI-35 HPFP on OTS 2H map, Pure Stage 2 turbo PWG car (no HPFP drop outside of traction loss event at around 3900rpm):
http://www.bootmod3.net/log?id=5bcf486cd10b435a2d3651ce

OEM HPFP on OTS 2H map, Pure Stage 2 turbo PWG car (400-500psi HPFP drop):
http://services.bootmod3.net/log?id=...0b4365a7303ff0

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Last edited by proTUNING Freaks; 11-28-2018 at 04:29 PM..
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      11-28-2018, 09:20 PM   #2
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      11-29-2018, 01:36 AM   #3
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Definitely the way to go for extra fuelling....would be cool if xdi/TTFS etc would do a price for the pump only without their base file for guys that have the bm3 option
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      11-29-2018, 04:14 PM   #4
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I have been running the 35 pump in my pure stage 2 (m235 xdrive) for several months. I'm local to TTFS who have been great. 20psi on 93 about 450 whp.
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      11-29-2018, 07:48 PM   #5
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Quote:
Originally Posted by Raymondo1234 View Post
I have been running the 35 pump in my pure stage 2 (m235 xdrive) for several months. I'm local to TTFS who have been great. 20psi on 93 about 450 whp.
I'm assuming with HPFP upgrade you're doing 20psi without meth (because meth alone can support fueling for 20psi and way more).

Without meth, 20psi should require E50. Would be amazing to see a log.
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      11-29-2018, 08:32 PM   #6
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Quote:
Originally Posted by SeanWRT View Post
Quote:
Originally Posted by Raymondo1234 View Post
I have been running the 35 pump in my pure stage 2 (m235 xdrive) for several months. I'm local to TTFS who have been great. 20psi on 93 about 450 whp.
I'm assuming with HPFP upgrade you're doing 20psi without meth (because meth alone can support fueling for 20psi and way more).

Without meth, 20psi should require E50. Would be amazing to see a log.
I am doing 20psi on 93. I will find the logs, I have them somewhere on a usb stick. I also have a p3 gauge with a boost tap that confirms.

I can go higher but I would need the 3.5 tmap sensor. There is also a torque limiter built in the trans. That's also a concern, I don't want to push that to it's limits. It's a daily driver.
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      11-29-2018, 09:18 PM   #7
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Quote:
Originally Posted by Raymondo1234 View Post
I am doing 20psi on 93. I will find the logs, I have them somewhere on a usb stick. I also have a p3 gauge with a boost tap that confirms.

I can go higher but I would need the 3.5 tmap sensor. There is also a torque limiter built in the trans. That's also a concern, I don't want to push that to it's limits. It's a daily driver.
20 psi peak or across? IMO 20psi at top end would be very very difficult on pump gas with >100F of IAT. That's something irrelevant of HPFP.

Send/PM me a log please so I can provide my inputs and give you my log to compare as well.

Thanks.
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      11-29-2018, 09:20 PM   #8
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Quote:
Originally Posted by SeanWRT View Post
Quote:
Originally Posted by Raymondo1234 View Post
I am doing 20psi on 93. I will find the logs, I have them somewhere on a usb stick. I also have a p3 gauge with a boost tap that confirms.

I can go higher but I would need the 3.5 tmap sensor. There is also a torque limiter built in the trans. That's also a concern, I don't want to push that to it's limits. It's a daily driver.
20 psi peak or across? IMO 20psi at top end would be very difficult on pump gas with >100F of IAT.

Send/PM me a log please so I can provide my inputs and give you my log to compare as well.

Thanks.
Peak is 20psi. The HPFP on this car has always been the bottle neck. When I get time I will find them. With all due respect, I have the car, and it's doing it. Theory is all you have.

Believe it or not, that's fine. I don't come on here very often because I knew it would start with all this.
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      11-29-2018, 09:34 PM   #9
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Quote:
Originally Posted by Raymondo1234 View Post
Peak is 20psi. The HPFP on this car has always been the bottle neck. When I get time I will find them. With all due respect, I have the car, and it's doing it. Theory is all you have.

Believe it or not, that's fine. I don't come on here very often because I knew it would start with all this.
Raymondo, don't take this wrong and no need to be this defensive. There is no questioning at all of what you achieved with your car.

Good for you and I already was there or close half a year ago but eventually chose to back off, as M2 to me is the track and daily car. Below is a log this summer to show 19psi at top end under ~110F of IAT, stock fueling and 93OCT(98RON), zero ethanol zero meth.

http://www.bootmod3.net/log?id=5b38d28fd10b437334792d1b

I'm aware of what our car can do and just want to discuss more of it in this HPFP dedicated thread.

Congrats.
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      11-29-2018, 09:38 PM   #10
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Quote:
Originally Posted by SeanWRT View Post
Quote:
Originally Posted by Raymondo1234 View Post
Peak is 20psi. The HPFP on this car has always been the bottle neck. When I get time I will find them. With all due respect, I have the car, and it's doing it. Theory is all you have.

Believe it or not, that's fine. I don't come on here very often because I knew it would start with all this.
Raymondo, don't take this wrong and no need to be this defensive. There is no questioning at all of what you achieved with your car.

Good for you and I already was somewhere close. Below is a log of summer when my car was running 19psi at top end under ~110F of IAT, stock fueling and 93OCT(98RON), zero ethanol zero meth.

http://www.bootmod3.net/log?id=5b38d28fd10b437334792d1b

I'm aware of what our car can do and just want to discuss more of it in this HPFP dedicated thread.

Congrats.
Granted if it's 100 outside then, no, not going to get 20psi.

I have got pretty much every conceivable modification......certainly been a work in progress.

Sorry if I came over aggressive, but it just appeared to me you are calling bs. I have no reason to lie, if it was 16psi then great, couldn't care less

I was just on here to give some insight as to what is possible, it's not a pissing competition.

I'm off work early next week and will look for the usb drive.
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      11-29-2018, 10:25 PM   #11
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This is really awesome! Good job guys, it'll be more convenient to just tap a box and get support for the xdi pumps, rather than getting a calibration from ttfs and having to flash that before doing the final tune.

Are you guys developing flex fuel? To me that's the most desired/game changing feature that could occur on this platform.

Also are you guys planning to add one touch support for the precision racewerks coils?
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      11-30-2018, 03:47 PM   #12
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If the 35 option a single pump, and the 60 a dual setup?
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      11-30-2018, 04:21 PM   #13
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Quote:
Originally Posted by Oxymoron View Post
If the 35 option a single pump, and the 60 a dual setup?
No the 60 model is also a single pump but flows more. TTFS has dual pump setup though that I believe is the same as in the S55.
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      12-02-2018, 07:22 PM   #14
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I intend to run the dual pump....gathering pieces as we speak. What needs to be done in order to run these in the BM3 program
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      12-02-2018, 10:12 PM   #15
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I intend to run the dual pump....gathering pieces as we speak. What needs to be done in order to run these in the BM3 program
Imo I recommend the single pump because from what I've heard from some vendors developing a solution to the crank hub slipping in the s55, the reason why it's common is because of a few reasons:

1) more power
2) dct agressively downshift putting more torque on the hub.
3) they even pointed to having two pumps putting more strain on the crank hub because it's driven off of it.

Plus the 65 variant of the xdi single pump can flow up to 700whp on e85 from what I've heard from ttfs.
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      12-03-2018, 03:03 AM   #16
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UK car with 35 HPFP upgrade [+ inlet and boost pipe upgrade & NGK 97506 plugs]

453/550 power/torque at the crank on UK 99 RON

More info in this BB forum link https://www.babybmw.net/forum/viewto...15144#p1444734
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      12-03-2018, 05:12 AM   #17
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Originally Posted by Bee Pee View Post
UK car with 35 HPFP upgrade [+ inlet and boost pipe upgrade & NGK 97506 plugs]

453/550 power/torque at the crank on UK 99/99 RON

More info in this BB forum link https://www.babybmw.net/forum/viewto...15144#p1444734
Oh dang nice man!
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      12-03-2018, 10:41 PM   #18
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Raymondo, trust me. I was actually very happy to see enthusiasts like you who mod tastefully, rather than go cheap way for big power. I share the philosophy.

When this HPFP mod came out early this year, I was trying really hard convincing myself to bite that 2k for it. Because in my book, a proper DI solution has always been the way, as opposed to adding extra injection (PI), a compromise with N55 for many years.

Out of 10k BM3 users globally at this point, few can beat me on this - Halim (huge thanks) made me LITERALLY 30~40 Custom maps since early 2017. And outside of Halim, there are 12 from Cary Jordan, 7 from Dzenan Becic and 3 from Joseph Wu. From these some 60 dedicated custom maps, Rich/Lean, high/mild boost and more/less timing have been all tried. That is tons of log testing, and a couple track days. But in my case, fueling has been always much less of a problem. I'll tell you that knowing the restriction isn't the fueling really pissed me off, because I cannot improve via upgrading fueling like many of others do.

One more thing - If you open map editing file, you'd be probably surprised to see our DME actually compensates very little, load wise, for temp. From BMW's point of view, they leave a good amount of headroom to handle environment variance so their cars perform consistently enough to their spec across all conditions. But once you tune, you lost most if not all that headroom (up to the tuning approach), therefore you'd be very vulnerable and sensitive to temp and need ultra high octane to handle everything. There're many clean logs at 70F (of IAT), 80 or ~90. But very few are doing great at 110, let alone 120~130+ IAT which is the track condition. Tuner don't tune to that condition because number wouldn't be pretty, customer would be unhappy and go away.

Appreciated if you give input from your personal experience tuning your N55.

Sean

Quote:
Originally Posted by Raymondo1234 View Post
Granted if it's 100 outside then, no, not going to get 20psi.

I have got pretty much every conceivable modification......certainly been a work in progress.

Sorry if I came over aggressive, but it just appeared to me you are calling bs. I have no reason to lie, if it was 16psi then great, couldn't care less

I was just on here to give some insight as to what is possible, it's not a pissing competition.

I'm off work early next week and will look for the usb drive.
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      12-04-2018, 01:38 AM   #19
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Quote:
Originally Posted by SeanWRT View Post
Raymondo, trust me. I was actually very happy to see enthusiasts like you who mod tastefully, rather than go cheap way for big power. I share the philosophy.

When this HPFP mod came out early this year, I was trying really hard convincing myself to bite that 2k for it. Because in my book, a proper DI solution has always been the way, as opposed to adding extra injection (PI), a compromise with N55 for many years.

Out of 10k BM3 users globally at this point, few can beat me on this - Halim (huge thanks) made me LITERALLY 30~40 Custom maps since early 2017. And outside of Halim, there are 12 from Cary Jordan, 7 from Dzenan Becic and 3 from Joseph Wu. From these some 60 dedicated custom maps, Rich/Lean, high/mild boost and more/less timing have been all tried. That is tons of log testing, and a couple track days. In my case, fueling has been always much less of a problem. I'll tell you knowing that really pissed me off, because I just lost this area and opportunity to improve, unlike many of other N55 EWG guys do!

One more thing - If you open map editing file, you'd be probably surprised to see our DME actually compensates very little, load wise, for temp. From BMW's point of view, they leave a good amount of headroom to handle environment variance so their cars perform consistently enough to their spec across all conditions. But once you tune, you lost most if not all that headroom (up to the tuning approach), therefore you'd be very vulnerable and sensitive to temp and need ultra high octane to handle everything. There're many clean logs at 70F (of IAT), 80 or ~90. But very few are doing great at 110, let alone 120~130+ IAT which is the track condition. Tuner don't tune to that condition because number wouldn't be pretty, customer would be unhappy and go away.

Appreciated if you give input from your personal experience tuning your N55.

Sean
+1
I'm glad this hpfp is now available as it'll let us push the car further and harder.

In regards to the tune that's why I have a tuner sit in my car with me and go lap a track and make adjustments to the tune right there on the track. It's created on the Dyno but dialed in on the track.

Water injection and e85 also help with IAT's, and I don't like using water meth especially on a track incase of roll overs.
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      12-04-2018, 10:40 AM   #20
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These costs are tough to swallow. Really tough. Basically to really benefit you need a bigger turbo to justify the bigger fuel pump.

I feel like a safe 460-480whp would be a riot in a well setup 2 series. More so the M2 as it can fit a little bigger tire. Approaching 500whp would be icing on the cake.

Unfortunately, it's quite the endeavor to get there. $2300 fuel pump, $2500 turbo, $600-ish in other install bits, plus whatever your labor is or a shop's labor is.

$5500ish is a lot of money.
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      12-18-2018, 11:25 AM   #21
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Hey Guys,
I am going to be doing this soon as well.
I will be having TTFS dyno tune my car once the pump is installed. I look forward to sharing my results.
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      12-18-2018, 02:09 PM   #22
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Hey Guys,
I am going to be doing this soon as well.
I will be having TTFS dyno tune my car once the pump is installed. I look forward to sharing my results.

Looking forward to seeing the results.
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