[thejeremyman9]

Originally Posted by Nicks_F30

They also said first gen b58 evo pump has a nice increase.

Its only a 7% increase...

[arekuf3x]

Originally Posted by thejeremyman9

Log is missing some key parameters but its not really running much more boost than OTS maps. It surges to ~19psi briefly but falls back down. The load and boost control is also a bit strange. Who is doing the tune? It looks more BM3-ish than MHD.

Also your pressure still starts to drop at peak boost. Makes sense with how little more that pump flows.

N55 hpfp with same boost would crash to 1100-1200psi, I actually feel fuel cut off, not with b58 evo pump. 7% increase would mean b58 hpfp would also crash, but it doesn’t, only few dips to 1700-1800psi, hpfp seems to crash if rail pressure drops below 1400-1500psi.

[yupetc]

It's also the same hunch I'm having in recognizing that B58 evo pump may have only a 7% increase flow rate at the top, but the ability to sustain flow on high demand is likely far better than the N55 HPFP. Anyway, sub'd for more findings.

[arekuf3x]

Originally Posted by thejeremyman9

Log is missing some key parameters but its not really running much more boost than OTS maps. It surges to ~19psi briefly but falls back down. The load and boost control is also a bit strange. Who is doing the tune? It looks more BM3-ish than MHD.

Also your pressure still starts to drop at peak boost. Makes sense with how little more that pump flows.

It’s still work in progress, I’m doing logs and sending it back to my tuner (Jordan tuned). N55 Ewg turbo at same boost felt much slower than pure500 turbo.

[thejeremyman9]

Originally Posted by arekuf3x

N55 hpfp with same boost would crash to 1100-1200psi, I actually feel fuel cut off, not with b58 evo pump. 7% increase would mean b58 hpfp would also crash, but it doesn’t, only few dips to 1700-1800psi, hpfp seems to crash if rail pressure drops below 1400-1500psi.

If it dips, you are demanding more fuel than you can supply. The bottom line is that the evo pump is not going to supply enough fuel to max the stock turbo with even moderate ethanol mixes. Right now you are targeting less than 7% more boost than even the MHD OTS E20 stage 2+ E20 map. And far less than BM3 stage 2+ map. I would be very surprised if the evo pump could run the BM3 stage 2+ map, interested in logs if someone tries it.

[arekuf3x]

Originally Posted by thejeremyman9

If it dips, you are demanding more fuel than you can supply. The bottom line is that the evo pump is not going to supply enough fuel to max the stock turbo with even moderate ethanol mixes. Right now you are targeting less than 7% more boost than even the MHD OTS E20 stage 2+ E20 map. And far less than BM3 stage 2+ map. I would be very surprised if the evo pump could run the BM3 stage 2+ map, interested in logs if someone tries it.

My target boost always stayed around 17psi but actual boost seems to be higher 3-5k rpm in each revision. I ran stage 2+ e20 mhd tune on pure500, and custom e30 tune feels vastly more powerful. Boost is not only way to make more power.

[thejeremyman9]

Originally Posted by arekuf3x

My target boost always stayed around 17psi but actual boost seems to be higher 3-5k rpm in each revision. I ran stage 2+ e20 mhd tune on pure500, and custom e30 tune feels vastly more powerful. Boost is not only way to make more power.

Classic Jordan tune, setting a boost target then intentionally exceeding it rather than using load control, lol.

Anyways, i know, there is pretty high timing in the log as well. I dont doubt its faster than MHD stage 2+, that map is made for stock HPFP, lower ethanol, and is more conservative with boost and load. Your custom tune will probably end up like a dialed back version of BM3 2+ map.

[n55david]

Originally Posted by Nicks_F30

Also, if I run stage 2 E30 map even tho upgraded hpfp isn’t required can I see a benefit?

Maybe? You won't see a power benefit that's for sure. The oem pump sometimes crashes a little on e3p or if you put too much e in above 30.. but there is ZERO to gain in power on pump gas.

[designatedposter]

Originally Posted by arekuf3x

My target boost always stayed around 17psi but actual boost seems to be higher 3-5k rpm in each revision. I ran stage 2+ e20 mhd tune on pure500, and custom e30 tune feels vastly more powerful. Boost is not only way to make more power.

hi, have you tried the new off the shelf MHD tune for upgraded hpfp? came out like a month ago. that would be a great test to see the capabilities of your hpfp

[thejeremyman9]

Originally Posted by designatedposter

hi, have you tried the new off the shelf MHD tune for upgraded hpfp? came out like a month ago. that would be a great test to see the capabilities of your hpfp

Great question, those maps are the main reason i am actually considering a TU pump now. Only saw one log from them in the MHD thread, they were only like 1-2psi more i think.

[AmuroRay]

Originally Posted by thejeremyman9

Great question, those maps are the main reason i am actually considering a TU pump now. Only saw one log from them in the MHD thread, they were only like 1-2psi more i think.

Claimed large increase in low and mid, and improved top end.

[thejeremyman9]

Originally Posted by AmuroRay

Claimed large increase in low and mid, and improved top end.

I read what MHD said, more so looking to quantitatively compare to my stock HPFP stage 2+ E20 logs in terms of timing/load/boost.

Having this thread be resurrected is actually making me consider doing a TU HPFP. The car has just been so solid as is - havent even re-flashed a tune in 2.5 years - so i am hesitant to touch it.

[terryd5150]

Originally Posted by thejeremyman9

I read what MHD said, more so looking to quantitatively compare to my stock HPFP stage 2+ E20 logs in terms of timing/load/boost.

Having this thread be resurrected is actually making me consider doing a TU HPFP. The car has just been so solid as is - havent even re-flashed a tune in 2.5 years - so i am hesitant to touch it.

What flash have you been on for the last 2.5 years?

[johnung]

Originally Posted by thejeremyman9

I read what MHD said, more so looking to quantitatively compare to my stock HPFP stage 2+ E20 logs in terms of timing/load/boost.

Having this thread be resurrected is actually making me consider doing a TU HPFP. The car has just been so solid as is - havent even re-flashed a tune in 2.5 years - so i am hesitant to touch it.

I understand the conversation focus is on HPFP’s, but I’m curious if examining the logs of the Pure500 has given you any clues about the Pure500 vs stock N55 EWG turbo?

[yupetc]

Originally Posted by thejeremyman9

I read what MHD said, more so looking to quantitatively compare to my stock HPFP stage 2+ E20 logs in terms of timing/load/boost.

Having this thread be resurrected is actually making me consider doing a TU HPFP. The car has just been so solid as is - havent even re-flashed a tune in 2.5 years - so i am hesitant to touch it.

I was under the impression during the last 30-40 posts or so that the TU pump will not be a durability option on the N55's. So if your car's been running a solid 2.5 years with a tune, why considering to do the TU pump and potentially risk the damages proposed by this thread's earlier findings?

I just bought a TU pump to replace the evo pump in my G30 540i, and the evo pump will go in my N55 motor; though 7% more flow, it's still more than the original N55 HPFP. Doing so only because the B58 evo pump is a true spare. If we all are so sure that the TU pump will work on our N55's unscathed whatsoever, I would be shopping for a TU pump to go on my N55 already. Still sub'd to this thread to see what the final verdict concludes.

[thejeremyman9]

Originally Posted by terryd5150

What flash have you been on for the last 2.5 years?

MHD stage 2+ E20 map running E30 fuel mix. Flashed Sept 2020, havent reflashed since then, and have been running that E mix in the tank nonstop (no pump gas fillups).

[thejeremyman9]

Originally Posted by johnung

I understand the conversation focus is on HPFP’s, but I’m curious if examining the logs of the Pure500 has given you any clues about the Pure500 vs stock N55 EWG turbo?

He's on a custom tune unfortunately, so we wont really be able to easily tell.

[thejeremyman9]

Originally Posted by yupetc

I was under the impression during the last 30-40 posts or so that the TU pump will not be a durability option on the N55's. So if your car's been running a solid 2.5 years with a tune, why considering to do the TU pump and potentially risk the damages proposed by this thread's earlier findings?

Simple answer lol: wanting more power, and currently maxed on stock fuel system.

Also, i have rasied the long term concerns raised earlier in this thread in a few different places with people running the TU pump. The concerns seem to be unfounded. The problem is there is no hard evidence one way or the other if it works fine or can potentially cause dmg over the long run. I don't think anyone running a TU pump has ever come back with damage reported.

Originally Posted by yupetc

I just bought a TU pump to replace the evo pump in my G30 540i, and the evo pump will go in my N55 motor; though 7% more flow, it's still more than the original N55 HPFP. Doing so only because the B58 evo pump is a true spare. If we all are so sure that the TU pump will work on our N55's unscathed whatsoever, I would be shopping for a TU pump to go on my N55 already. Still sub'd to this thread to see what the final verdict concludes.

What difference between the TU and evo pump puts the N55 at risk? Unfortunately i dont think there will be a final verdict. The only way to prove it would be if someone running a evo pump came back with proof it caused dmg. Nowadays everyone is doing the aftermarket solutions, but its not an option here in CA since i dont want to be swapping HPFP every 2 years.

[i531m]

Originally Posted by thejeremyman9

Great question, those maps are the main reason i am actually considering a TU pump now. Only saw one log from them in the MHD thread, they were only like 1-2psi more i think.

Please could you link me too the n55 MHD HPFP map , data log, i havent seen it

thanks

edit sorry i have found it now

[yupetc]

Originally Posted by thejeremyman9

Simple answer lol: wanting more power, and currently maxed on stock fuel system.

Also, i have rasied the long term concerns raised earlier in this thread in a few different places with people running the TU pump. The concerns seem to be unfounded. The problem is there is no hard evidence one way or the other if it works fine or can potentially cause dmg over the long run. I don't think anyone running a TU pump has ever come back with damage reported.



What difference between the TU and evo pump puts the N55 at risk? Unfortunately i dont think there will be a final verdict. The only way to prove it would be if someone running a evo pump came back with proof it caused dmg. Nowadays everyone is doing the aftermarket solutions, but its not an option here in CA since i dont want to be swapping HPFP every 2 years.

I see, I think I'll stick to B58 evo conversion onto my N55 for now. Then I'll play a few years to observe your endeavor into the TU pump and see how it goes. There are just too many for-and-nots in terms of info being presented here on the forum. But you're always a positive influence and everything you've done so far are under a "de facto" basis. Thanks a bunch, Jeremy.

[n55david]

I have an evo b58 gen1 pump if anyone is looking for one. Less than 30k miles on it.

[thejeremyman9]

Originally Posted by n55david

I have an evo b58 gen1 pump if anyone is looking for one. Less than 30k miles on it.

Does the evo fit without any modifications but the TU requires modifications?