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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > bootmod3 for BMW F series Vehicles - General Discussion
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      10-13-2020, 05:06 PM   #3455
thejeremyman9
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Originally Posted by thatBimmerBloke View Post
Yes that would be one way of putting it I believe with Stage 2 E30 map I'm making somewhere around 360-370whp. Will the 2+ E30 with just upgraded HPFP take me beyond 400whp? And will I benefit from custom E50 or will the stock turbo be a limiting factor?
That's what they said: 420-430 with stock turbo. https://f30.bimmerpost.com/forums/sh...76&postcount=5

I think that's an estimated upper limit. The car they tested had a PS2. But low 400s seems in line with some custom tune data with upgraded HPFP. I honestly dont think you would gain much by doing a E50 custom tune compared with the new E30 OTS maps on stock turbo, certainly not from a HP/$ perspective. But i think it would be very interesting to see someone with BM3 who already has a Exx custom tune flash this new OTS map and provide back to back datalogs (can use virtual dyno), or even better, dyno runs (wishful thinking).
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      10-13-2020, 05:16 PM   #3456
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Quote:
Originally Posted by thejeremyman9 View Post
That's what they said: 420-430 with stock turbo. https://f30.bimmerpost.com/forums/sh...76&postcount=5

I think that's an estimated upper limit. The car they tested had a PS2. But low 400s seems in line with some custom tune data with upgraded HPFP. I honestly dont think you would gain much by doing a E50 custom tune compared with the new E30 OTS maps on stock turbo, certainly not from a HP/$ perspective. But i think it would be very interesting to see someone with BM3 who already has a Exx custom tune flash this new OTS map and provide back to back datalogs (can use virtual dyno), or even better, dyno runs (wishful thinking).
50whp bump sounds good Will the Dorch Stage 1 be enough or it's better to go with stage 2 and be done with it for once? Or is there a better option that's easier on the pocket also?
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      10-13-2020, 05:30 PM   #3457
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this is great.... just curious why E30... I still feel there is a little more to extract from the stock turbo... did he test E50 etc...? or is this just a marketing thing... in a few months we'll see E50 etc...
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      10-13-2020, 05:33 PM   #3458
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Quote:
Originally Posted by thatBimmerBloke View Post
50whp bump sounds good Will the Dorch Stage 1 be enough or it's better to go with stage 2 and be done with it for once? Or is there a better option that's easier on the pocket also?
Stage 1 enough for stock turbo but why not future proof is my opinion. If i ever HPFP it will be a stage 2 or equivalent flow (FX150 is around there). Several options for HPFP out there to consider now. Black friday sales might be key to save $$$.
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      10-13-2020, 06:21 PM   #3459
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Originally Posted by FastF30 View Post
this is great.... just curious why E30... I still feel there is a little more to extract from the stock turbo... did he test E50 etc...? or is this just a marketing thing... in a few months we'll see E50 etc...
Eh, I wouldn't look at it as a marketing this because he's targeted E30 for quite sometime now including the B58 both F and G series as well as S55 and S58. I could safely assume that if it hasn't been done for the others especially the S platforms, why would the N55 be the one outlier to the group? Wouldn't you find it odd if an E50 map were made for the N20 but none of the others?
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      10-13-2020, 06:50 PM   #3460
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Originally Posted by imperfectluck View Post
Eh, I wouldn't look at it as a marketing this because he's targeted E30 for quite sometime now including the B58 both F and G series as well as S55 and S58. I could safely assume that if it hasn't been done for the others especially the S platforms, why would the N55 be the one outlier to the group? Wouldn't you find it odd if an E50 map were made for the N20 but none of the others?
I've seen impressive numbers on E50 for the B58 all due to fueling and good tuning... Just curious why E30 and not E50... I'm running MHD so it would cost me just as much going custom tune MHD or purchasing BM3... that's all...
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      10-13-2020, 06:58 PM   #3461
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@FastF30 Ah, didn't realize you were MHD. Was just stating from a historical perspective across the line up its consistency using e30. I can't answer on his behalf but I'm sure would could come up with a number of reasons such as demand for e50 vs e30, support for e50 across the board , etc. I'm sure there is a valid reason and I trust Halim@HCP and his reasons.
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      10-17-2020, 03:35 PM   #3462
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Originally Posted by designatedposter View Post
i am located in CT and noticed this year that either boostane changed their formula OR the fuel in our area has actually decreased in octane even further. my solution was to install a water meth system and now my octane exceeds the needs of the race gas tune.

last year i added about 4oz of boostane pro to each tank with 93 fuel and ran the 91 tune with clean logs. this year, the logs had alot of timing drops. i increased to about 6oz and still no affect. this is when i gave up on it and moved onto to WMI.
I will say I really am I a believer now in varying gas quality having a major impact on timing. After trying multiple shell and mobil stations and having horrible timing and knock events, I decided to try a BP.... however, I was apparently too tired to be driving because it was actually a Cumberland Farms station. I figured what the hell and filled up anyways. Ever since then I get the cleanest logs I could ever ask for:

https://www.bootmod3.net/log?id=5f88...729b488dc3d7d3

Granted this on 93 Oct and the ACN 91 stage 1 tune, but so were the previous ones on Shell 93 Vower:

https://www.bootmod3.net/log?id=5f5e...729b7f1676ca24

Note that I have taken 1+ lots of each and they were consistent. Just posting 1 to save some time.
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      10-17-2020, 07:55 PM   #3463
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Quote:
Originally Posted by jbiswurm View Post
I will say I really am I a believer now in varying gas quality having a major impact on timing. After trying multiple shell and mobil stations and having horrible timing and knock events, I decided to try a BP.... however, I was apparently too tired to be driving because it was actually a Cumberland Farms station. I figured what the hell and filled up anyways. Ever since then I get the cleanest logs I could ever ask for:

https://www.bootmod3.net/log?id=5f88...729b488dc3d7d3

Granted this on 93 Oct and the ACN 91 stage 1 tune, but so were the previous ones on Shell 93 Vower:

https://www.bootmod3.net/log?id=5f5e...729b7f1676ca24

Note that I have taken 1+ lots of each and they were consistent. Just posting 1 to save some time.
New log does look pretty good overall. I would note that IATs are quite low, which could have also been a factor in helping with clean timing. Also, this log shows the same erratic WGDC up top as the other stage 1 logs. (Nothing with your car, seems tuned-related). Nice log though.

The variability in pump gas quality/octane is just another reason why I will basically never go back to pump gas over E85 mixing.
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