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billydean335 billydean335 is offline
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Default Looking to Make Max Power on New Turbos -Help - 01-14-2020, 09:53 AM

Hi Everyone, I'm still learning about tuning. I have a good idea of the basics but wanted to see if someone knowledgeable could help me out with understanding.

First, Here's the background of my car:

2008 E90 335i N54 -

FBO, 2" Inlets, Tomioka 15t Turbos, JB4 + E85 Hybrid BEF, FUEL It stage 1 inline LPFP. Running E40 Currently.

Before new 15t's and inlets, I made 440whp on 19psi and e40. Now With the New turbos and inlets on 20psi and e40 the car feels much faster. Maybe in the 480-500whp range. (Haven't dyno'd). I'm hoping to make at LEAST 500whp before PI or Meth Integration. I have spent all my extra money on this car and need to hold out on spending another 1,000.00 on PI. Girlfriend may leave me LOL.

On to questions...

1. My HPFP is maxed already at 20psi and e40. Seeing dips to 1100psi from Logs. If I lower the E content will that help the HPFP from starving or is the WHP number being made that is hurting it. Example: If I dropped to E30, and ran 21psi (if logs approved) would that therefore help the HPFP?

2. Would I make more power on a straight 93 tune until I get PI?

3. The main thing that is confusing me is how people are running a stage 2 LPFP and 22psi on stock turbos pushing 500whp. I have my new turbos in and supporting mods, but want to understand why I may be falling short of that number and am not comfortable with upping boost with my HPFP where it is now.

4. What tuning/fuel would you suggest to reach 500whp - 530whp on upgraded turbos without meth or PI? Or is it even possible?

5. How can I tell if boost is to high for octane used? Afr's?

Just having a hard time understanding how to hit these numbers. Any advice would be great, Just looking to learn. I just feel like I'm missing something, I find it hard to believe that with these bigger turbos and inlets I can't make more power than highly modified stock turbo cars before needing fueling.

Maybe I am at 500whp, need to dyno to know for sure I guess... sorry for the long post.


2008 BMW 335i
FBO JB4 + E85 BEF & XHP STage 3
Tomioka 15ts, VRSF 2" Inlets. E40.

Cosmis Racing XT-005R 18x9 Squared

Federal 595 255-35-18 Squared

Stock M-Sport Suspension

Last edited by billydean335; 01-14-2020 at 10:11 AM..
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THE BEAST THE BEAST is offline
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Default 01-14-2020, 11:52 AM

First.....Get rid of gf and find one that supports, or at the very least, does NOT interfere with your habits. When you do, marry her and life will be gravy.
1. Generally speaking, yes, if you drop e content, hpfp should be happier, thus leaving more headroom. Problem is, you would be sacrificing safety. Less octane is a no no.
2. See post #1
3. Not familiar with your turbos, but without a dyno, who knows, you may already be at that level ? Also keep in mind , dynos and conditions vary.
4. This is highly dependent on the turbos of choice. Once again, Im not familiar with your turbos or their capabilities.
5. Timing drops. AFRs will reflect more fuel delivery , tuning, O2 sensors, etc.
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billydean335 billydean335 is offline
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Default 01-14-2020, 05:00 PM

Quote:
Originally Posted by THE BEAST
First.....Get rid of gf and find one that supports, or at the very least, does NOT interfere with your habits. When you do, marry her and life will be gravy.
1. Generally speaking, yes, if you drop e content, hpfp should be happier, thus leaving more headroom. Problem is, you would be sacrificing safety. Less octane is a no no.
2. See post #1
3. Not familiar with your turbos, but without a dyno, who knows, you may already be at that level ? Also keep in mind , dynos and conditions vary.
4. This is highly dependent on the turbos of choice. Once again, Im not familiar with your turbos or their capabilities.
5. Timing drops. AFRs will reflect more fuel delivery , tuning, O2 sensors, etc.

Thanks for that response, lots of good info.

One thing I'm having hard time understanding is timing. How do I interpret timing from JB4 logs?

Tomioka 15ts are rated for a maximum of 625whp and that was achieved at 27psi if i remember correctly from speaking with the tech. They are very popular in the subaru world. They were award best new turbo at 2019 sema.

And you're saying not to lower octane? Obviously you need to see a log. I'll throw a couple up. Lol.


2008 BMW 335i
FBO JB4 + E85 BEF & XHP STage 3
Tomioka 15ts, VRSF 2" Inlets. E40.

Cosmis Racing XT-005R 18x9 Squared

Federal 595 255-35-18 Squared

Stock M-Sport Suspension
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THE BEAST THE BEAST is offline
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Default 01-14-2020, 05:08 PM

Quote:
Originally Posted by billydean335
Thanks for that response, lots of good info.

One thing I'm having hard time understanding is timing. How do I interpret timing from JB4 logs?

Tomioka 15ts are rated for a maximum of 625whp and that was achieved at 27psi if i remember correctly from speaking with the tech. They are very popular in the subaru world. They were award best new turbo at 2019 sema.

And you're saying not to lower octane? Obviously you need to see a log. I'll throw a couple up. Lol.
Yes, logs help, no matter though, I would not suggest to lower octane if you want more power.
Yes I have heard of the turbos, not familiar with their capabilities. Dont know anyone running them.
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Bbelstad Bbelstad is offline
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Default 01-14-2020, 07:30 PM

+1 on the gf advice from Beast lol. Good luck hitting the HP goals. That's a nice set up for sure. Hope it all goes smooth in your path to fast!


Brandon
Hayden, Idaho.

* 08' 535I. * JB4 W/ Bluetooth Connect & custom tune. * Billy Boat 535I 3.5" *****-back exhaust W/ resonator delete. * BMS DCI. * NGK 2 step colder plugs @ .020" (And I mean .020" on money!). * New Eldor coils. * BMS BOV adapter and BMS Vac side OCC. * BMS Chargepipe. * TIAL BOV W/ Hard 1/4" Vacuum line W/stock spring. * XHP Stage 2 * C-@-T TUBES.





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billydean335 billydean335 is offline
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Default 01-15-2020, 08:46 AM

Quote:
Originally Posted by Bbelstad
+1 on the gf advice from Beast lol. Good luck hitting the HP goals. That's a nice set up for sure. Hope it all goes smooth in your path to fast!
Thanks Bruv!


2008 BMW 335i
FBO JB4 + E85 BEF & XHP STage 3
Tomioka 15ts, VRSF 2" Inlets. E40.

Cosmis Racing XT-005R 18x9 Squared

Federal 595 255-35-18 Squared

Stock M-Sport Suspension
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billydean335 billydean335 is offline
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Default 01-15-2020, 08:52 AM

Quote:
Originally Posted by THE BEAST
Yes, logs help, no matter though, I would not suggest to lower octane if you want more power.
Yes I have heard of the turbos, not familiar with their capabilities. Dont know anyone running them.
Last thing, How can I interpret timing from Jb4 Data Logs?

After doing some pulls last night, It feels perfect in 1st , 2nd, and 3rd at 20psi. I think once I get into 4th 20psi is too light of boost. After reviewing logs, I believe I can target 22psi or so given that my HPFP does not drop under 1300psi WOT in 4th, 5th, and 6th.

Thinking of going
1st- 14psi
2nd- 18psi
3rd- 20psi
4th- 22psi
5th- 22psi
6th- 22psi


2008 BMW 335i
FBO JB4 + E85 BEF & XHP STage 3
Tomioka 15ts, VRSF 2" Inlets. E40.

Cosmis Racing XT-005R 18x9 Squared

Federal 595 255-35-18 Squared

Stock M-Sport Suspension
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THE BEAST THE BEAST is offline
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Default 01-15-2020, 11:51 AM

Quote:
Originally Posted by billydean335
Last thing, How can I interpret timing from Jb4 Data Logs?

After doing some pulls last night, It feels perfect in 1st , 2nd, and 3rd at 20psi. I think once I get into 4th 20psi is too light of boost. After reviewing logs, I believe I can target 22psi or so given that my HPFP does not drop under 1300psi WOT in 4th, 5th, and 6th.

Thinking of going
1st- 14psi
2nd- 18psi
3rd- 20psi
4th- 22psi
5th- 22psi
6th- 22psi
Post a log
Watch how cylinders compare. You will see if timing "drops"
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billydean335 billydean335 is offline
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Default 01-15-2020, 12:17 PM

Quote:
Originally Posted by THE BEAST
Post a log
Watch how cylinders compare. You will see if timing "drops"
Got It


2008 BMW 335i
FBO JB4 + E85 BEF & XHP STage 3
Tomioka 15ts, VRSF 2" Inlets. E40.

Cosmis Racing XT-005R 18x9 Squared

Federal 595 255-35-18 Squared

Stock M-Sport Suspension
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