N54Tech.com - International Turbo Racing Discussion
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Suckadeez Suckadeez is offline
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Default 06-22-2017, 04:31 PM

Quote:
Originally Posted by tho
11 is probably the lowest you want to see (IMO). It generally means that the HPFP is struggling to keep up with the demanded flow due to the higher E content.

In addition, to me it looks like you're running fairly lean. 13.6 vs the 12.5 which is what I would expect. That being said, I'm not that familiar with the E85 BEF, so I'm not sure what the AFR targets are, but to me that still seems lean.

You can try and change your meth ratio to 80/20 or 75/25 (Meth/H20) or more which should help provide some additional fuel which may help your HPFP values. But as I understand it, the best way to take advantage of the upgraded LPFP is to use TBI or PI.

Or, you could lower your E content, to give the HPFP a break, but you will most likely need to change your tune as well.
I plan on going port injection when I upgrade my turbo this winter planning on going ps2, but figured I'd wait it out with a lot of development going on in the n55 community. I'll lower my e content next time I fill up see if the relieves the hpfp a little. do you think spraying to much meth would make the car run lean. I'm running dual cm7 nozzles and it might be over kill for now.


2011 335xi e92
deep sea blue metallic
Mods: ps2; cobb fmic; vrsf ⬇️pipe; phoenix racing cp; injen cai; pure inlet; fuel it stage 2 lpfp w/ sensor; jb4 w/mhd e85 bef; meth 90/10 do3 and do7 nozzles. n20 tmap. Alpina flash. Fuel it port injection e50
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Suckadeez Suckadeez is offline
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Default 06-22-2017, 04:36 PM

Quote:
Originally Posted by Bours
Anybody here been running 23-24 psi on stocker ?
was messing around with my setup earlier checked my logs and I'm hitting 23 psi on the stock turbo for a little. cars still running lean it looks like tho.
Attached Files
File Type: csv 3rd-4th 23psi.csv (11.3 KB, 58 views)


2011 335xi e92
deep sea blue metallic
Mods: ps2; cobb fmic; vrsf ⬇️pipe; phoenix racing cp; injen cai; pure inlet; fuel it stage 2 lpfp w/ sensor; jb4 w/mhd e85 bef; meth 90/10 do3 and do7 nozzles. n20 tmap. Alpina flash. Fuel it port injection e50
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Default 06-23-2017, 01:13 PM

Quote:
Originally Posted by cnm135i
AFR 14....I wouldn't be comfortable with that. My stock flash was running 12.7-13.

If the E-series log are read the same way as the F-series PWG then I'd say your HPFP looks solid. Trims are also on te negative side of 25 meaning that DME is pulling fuel.

I can max out the PS2 with CM5+7 100% meth and 93AKI so you definitely dont lack meth with dual DM7
I agree your AFR is way too lean. Although, my opinion is that he still needs fuel to bring the AFR down. I didn't realize that your meth ratio was already 80/20. 100% might help. Your car is going to feel the fastest it's ever been right before it pops.


2011 335i - JB4 ISO | MHD E85 PI BEF | Exhaust Mods | CP | 5" stepped FMIC | BMS Meth Injection | BMS Intake | Pure Stage 2 | Pure Inlet | FF wires | Fuel It Stage 2 | DV+ | N20 TMAP | Ethanol mix
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Bours Bours is offline
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Default 06-23-2017, 02:50 PM

Quote:
Originally Posted by Suckadeez
was messing around with my setup earlier checked my logs and I'm hitting 23 psi on the stock turbo for a little. cars still running lean it looks like tho.

Any quarter mile times !??? Nice log im at 21 psi on 100 meth and OK timing. I need a splash of E to get 23 psi with clean timing. How does the car feel ?


335i x-drive 2011 e90 n55

ER chargepipe | performance line d.p | 90/10 bms meth kit | K&N drop in | JB4 + MHD pump flash | xhp stage 3 flash | PURE STAGE 2 turbo
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Suckadeez Suckadeez is offline
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Default 06-23-2017, 04:26 PM

Quote:
Originally Posted by tho
I agree your AFR is way too lean. Although, my opinion is that he still needs fuel to bring the AFR down. I didn't realize that your meth ratio was already 80/20. 100% might help. Your car is going to feel the fastest it's ever been right before it pops.
my meth tanks pretty low. I'll fill it up with some vp m1 turn down the boost and try to clean up my timing and afr. yeah I thought about that every time I saw the gauge hit 23, but the torque is addicting but not worth it really.


2011 335xi e92
deep sea blue metallic
Mods: ps2; cobb fmic; vrsf ⬇️pipe; phoenix racing cp; injen cai; pure inlet; fuel it stage 2 lpfp w/ sensor; jb4 w/mhd e85 bef; meth 90/10 do3 and do7 nozzles. n20 tmap. Alpina flash. Fuel it port injection e50
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Suckadeez Suckadeez is offline
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Default 06-23-2017, 04:28 PM

Quote:
Originally Posted by Bours
Any quarter mile times !??? Nice log im at 21 psi on 100 meth and OK timing. I need a splash of E to get 23 psi with clean timing. How does the car feel ?
no quarter mile times. closes track is about a 1 1/2 hours away so I don't make it there too often. the car feels amazing down low it just wants to take off. top end is same.


2011 335xi e92
deep sea blue metallic
Mods: ps2; cobb fmic; vrsf ⬇️pipe; phoenix racing cp; injen cai; pure inlet; fuel it stage 2 lpfp w/ sensor; jb4 w/mhd e85 bef; meth 90/10 do3 and do7 nozzles. n20 tmap. Alpina flash. Fuel it port injection e50
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Jmwilson125 Jmwilson125 is offline
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Default 06-28-2017, 04:34 PM

What do you guys have your boost fail-safe set to? I just put mine at 22? Good idea, bad idea, doesn't really matter?


2016 M235i EWG N55 - Empty exhaust - Charge Pipe - Intake - FMIC - WMI kit dual cm5+cm7 - JB4 FF and EWG Wires.
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bNks334 bNks334 is offline
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Default 06-28-2017, 08:02 PM

My n55 e30 custom tune hits 25-26 psi for 220 load. I picked up about 15-20whp and 30wtq between 3000rpms to 5000rpms over the e30 ots map that hits around 20psi. This is 4th gear I'm talking about. No reason jb4 can't do the same (timing might be an issue without a bef).

There is definetly gains to be had "under the curve." Limiting factor right now is that at 500wtq and 3000rpms the hpfp tanks. I'm out of fueling as hpfp can't flow enough at that Rpm to keep up. Having meth will probably help you with that. A lpfp upgrade did nothing for me for the aforementioned reason of high load at low rpms. My afr is around 12.6 so can be leaned out a bit still.
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Peen Peen is offline
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Default 06-28-2017, 08:44 PM

Quote:
Originally Posted by bNks334
My n55 e30 custom tune hits 25-26 psi for 220 load. I picked up about 15-20whp and 30wtq between 3000rpms to 5000rpms over the e30 ots map that hits around 20psi. This is 4th gear I'm talking about. No reason jb4 can't do the same (timing might be an issue without a bef).

There is definetly gains to be had "under the curve." Limiting factor right now is that at 500wtq and 3000rpms the hpfp tanks. I'm out of fueling as hpfp can't flow enough at that Rpm to keep up. Having meth will probably help you with that. A lpfp upgrade did nothing for me for the aforementioned reason of high load at low rpms. My afr is around 12.6 so can be leaned out a bit still.
About the same here for my custom E40-50 map, 25psi and 220-230 load in 4th gear. Was running 23 psi with JB4 and MHD.

More boost early for sure helps, not sure on actual dyno numbers but it is slightly noticeable.


2011 335i / MHD E85 BEF / JB4 ISO / xHP Stage 3 TCU / M3 Control Arms / VRSF Piping/ Phoenix CP / YCW Coilovers 6K-18K / Enkei Raijin 18' Wheels / Michellin PSS
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bNks334 bNks334 is offline
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Default 06-29-2017, 07:37 AM

Quote:
Originally Posted by Peen
About the same here for my custom E40-50 map, 25psi and 220-230 load in 4th gear. Was running 23 psi with JB4 and MHD.

More boost early for sure helps, not sure on actual dyno numbers but it is slightly noticeable.
I put down 364/497 with very low timing on an early revision of my custom tune. We have since added almost 4* of timing and leaned my car out a bit more to keep rail pressure up. I'd say I should be close to 380whp/500wtq now. Going to dyno again soon to confirm. The increase "under the curve" is a good 30whp/50wtq (between 3-5k) rpms increase over the OTS E30 map. Carrying an additional 20whp to redline also helps (custom tune has more aggressive timing up top).

Who did your tune?

Last edited by bNks334; 06-29-2017 at 08:06 AM..
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Peen Peen is offline
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Default 06-29-2017, 07:56 AM

Mine is from Twisted. What's your AFR at right now? I'm on v0.02...still about 12.5 AFR.


2011 335i / MHD E85 BEF / JB4 ISO / xHP Stage 3 TCU / M3 Control Arms / VRSF Piping/ Phoenix CP / YCW Coilovers 6K-18K / Enkei Raijin 18' Wheels / Michellin PSS
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bNks334 bNks334 is offline
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Default 06-29-2017, 08:05 AM

Quote:
Originally Posted by Peen
Mine is from Twisted. What's your AFR at right now? I'm on v0.02...still about 12.5 AFR.
AFR is around 12.8:1 right now enriching to 12.4:1 as HPFP starts to recover. Every car is slightly different though so going leaner may not be necessary on your car. Or, you may need to go even leaner (or dial boost back a bit). Justin's been great at constantly improving the map while keeping things safe as a daily driver (zero to minimal timing corrections on this revision still).

Fyi, stock clutch started slipping at around 500wtq. I moved to a 335is clutch and it's been fantastic at holding the torque of this tune. You're also going to need some stickier tires than MPSS lol.

Last edited by bNks334; 06-29-2017 at 08:24 AM..
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Bours Bours is offline
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Default 06-30-2017, 12:22 PM

Quote:
Originally Posted by bNks334
AFR is around 12.8:1 right now enriching to 12.4:1 as HPFP starts to recover. Every car is slightly different though so going leaner may not be necessary on your car. Or, you may need to go even leaner (or dial boost back a bit). Justin's been great at constantly improving the map while keeping things safe as a daily driver (zero to minimal timing corrections on this revision still).

Fyi, stock clutch started slipping at around 500wtq. I moved to a 335is clutch and it's been fantastic at holding the torque of this tune. You're also going to need some stickier tires than MPSS lol.

Which tires would you recommend i installed n20 tmap and tried 22 psi but im spinning in first gear launch with x dtive on michelin pss ! Ill try 25 psi once i get some E cant wait !


335i x-drive 2011 e90 n55

ER chargepipe | performance line d.p | 90/10 bms meth kit | K&N drop in | JB4 + MHD pump flash | xhp stage 3 flash | PURE STAGE 2 turbo
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Bours Bours is offline
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Default 06-30-2017, 12:22 PM

Quote:
Originally Posted by bNks334
AFR is around 12.8:1 right now enriching to 12.4:1 as HPFP starts to recover. Every car is slightly different though so going leaner may not be necessary on your car. Or, you may need to go even leaner (or dial boost back a bit). Justin's been great at constantly improving the map while keeping things safe as a daily driver (zero to minimal timing corrections on this revision still).

Fyi, stock clutch started slipping at around 500wtq. I moved to a 335is clutch and it's been fantastic at holding the torque of this tune. You're also going to need some stickier tires than MPSS lol.
Quarter miles times ?


335i x-drive 2011 e90 n55

ER chargepipe | performance line d.p | 90/10 bms meth kit | K&N drop in | JB4 + MHD pump flash | xhp stage 3 flash | PURE STAGE 2 turbo
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bNks334 bNks334 is offline
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Default 06-30-2017, 07:20 PM

Quote:
Originally Posted by Bours
Which tires would you recommend i installed n20 tmap and tried 22 psi but im spinning in first gear launch with x dtive on michelin pss ! Ill try 25 psi once i get some E cant wait !
Any 200tw catagory tire or lower will be an improvement over mpss. That's what I've been using (re-71/rs3/r1r/rs-rr) because they strike about the best balance between daily driver and traction. This is not my weekend car. I've gotta get to work safely in rain and sometimes surprise freezing temps. If I could run stickier rubber I would.

If you want to be able to hook in first you need to flash a linear throttle map and learn to feather the gas/slip the clutch a bit. Or get some really sticky tires on the car. Some people have success running r888 on the street.

Last edited by bNks334; 06-30-2017 at 10:07 PM..
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Default 06-30-2017, 07:40 PM

Quote:
Originally Posted by Bours
Which tires would you recommend i installed n20 tmap and tried 22 psi but im spinning in first gear launch with x dtive on michelin pss ! Ill try 25 psi once i get some E cant wait !
You're not going to hit 25 psi on the stock turbo especially in 1st.


2011 E92 335i Auto
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2014 E84 X1 35i 12.85 @ 107MPH / 0-60 4.72 / 293 AWHP 305 AWTQ When stock
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bNks334 bNks334 is offline
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Default 06-30-2017, 09:58 PM

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Originally Posted by Bimmer_Boost
You're not going to hit 25 psi on the stock turbo especially in 1st.
No not a chance youll hit that in 1st, that doesn't mean that traction isnt an issue though with fairly weak tires like mpss...

And yes, 25-26psi is very possible with stock turbo on a 4th gear pull:


With meth or some other kind of supplementary fueling I could run even more boost down low... it's just not practical to do so.
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Bours Bours is offline
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Default 07-03-2017, 11:11 PM

what fuel was used on this log ? any quarter miles times at this boost level ?

how come your holding boost this well up top on a n55 ?? custom map 6 ?


335i x-drive 2011 e90 n55

ER chargepipe | performance line d.p | 90/10 bms meth kit | K&N drop in | JB4 + MHD pump flash | xhp stage 3 flash | PURE STAGE 2 turbo
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Default 07-03-2017, 11:18 PM

Quote:
Originally Posted by Bours
what fuel was used on this log ? any quarter miles times at this boost level ?

how come your holding boost this well up top on a n55 ?? custom map 6 ?
MHD


2011 E92 335i Auto
12.0 @ 125MPH JB4
11.7 @ 120MPH E30 MHD / 0-60 3.66
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2014 E84 X1 35i 12.85 @ 107MPH / 0-60 4.72 / 293 AWHP 305 AWTQ When stock
VRSF Chargepipe | BMS Intake | JB4 ISO | N20 TMAP | VRSF 7" Intercooler | ER Turbo Outlet |
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bNks334 bNks334 is offline
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Default 07-04-2017, 06:05 AM

Quote:
Originally Posted by Bours
what fuel was used on this log ? any quarter miles times at this boost level ?

how come your holding boost this well up top on a n55 ?? custom map 6 ?
Custom e30 tune by Twistedtuning. I use the car for roadcourse work. It's not set up to launch. Also no strips anywhere near me (long island needs a drag strip).
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