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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Advice on next mods to reach 500hp?



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      11-01-2019, 01:14 PM   #23
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Quote:
Originally Posted by iqraceworks View Post
So far this is what I’ve gone to my “project” 07’ 335i I picked up a few months ago. BMS DCI, BMS chargepipe w/ Tail BOV, ARM Downpipes, MHD stage 2 tune (91 oct), Bilstein B12 suspension kit….and lots of maintenance.

I’m guessing the car is in the 400-425 hp range? What should my next mods be if I’m shooting for that magic 500hp goal? Better exhaust system? 7” FMIC? Other?

I don’t have access to e85 in my area…so that’s really not an option. I’d like to stay with the stock turbos right now also.

What do I need to hit the 500hp mark?
- silicone inlets
- SS outlets (VRSF)
- FMIC 5" stepped or even a 7"
- upgrade your stock twin turbos to stage 2
- upgrade your LPFP to stage 2.
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      11-01-2019, 02:03 PM   #24
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Originally Posted by iqraceworks View Post
With the FMIC.....and going up to the MHD stage 2 + tune, what kind of numbers would it make?

And yes....after the FMIC...I think I'm pretty much done with adding power.
With a stage 2+ if your maintenance is up to date your looking at 375-390whp.
on 93 Octane.

If you did full bolt ons (upgraded intercooler, inlets, dual cone filter intakes, downpipes) and run a small mix of e85 like 30% you should hit about 440whp with 93 octane mixed.


Breaking 500whp on stock turbos will require higher content of e85, upgraded fuel pump and/or meth injection and a custom tune. But your stock turbos will hate you since you'll be pushing them beyond 21psi.
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      11-01-2019, 02:21 PM   #25
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Quote:
Originally Posted by rsyed07 View Post
With a stage 2+ if your maintenance is up to date your looking at 375-390whp.
on 93 Octane.

If you did full bolt ons (upgraded intercooler, inlets, dual cone filter intakes, downpipes) and run a small mix of e85 like 30% you should hit about 440whp with 93 octane mixed.


Breaking 500whp on stock turbos will require higher content of e85, upgraded fuel pump and/or meth injection and a custom tune. But your stock turbos will hate you since you'll be pushing them beyond 21psi.
my friends stock turbos are at 27 psi and taper to 21 at redline mine have been at 21.5 for a couple years now and they are fine.
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      11-01-2019, 02:46 PM   #26
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Quote:
Originally Posted by Silent11N54 View Post
my friends stock turbos are at 27 psi and taper to 21 at redline mine have been at 21.5 for a couple years now and they are fine.
I'm calling bullshit until I see a log. No way this dude is tapering to 21 at redline.
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      11-01-2019, 02:48 PM   #27
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Quote:
Originally Posted by Silent11N54 View Post
my friends stock turbos are at 27 psi and taper to 21 at redline mine have been at 21.5 for a couple years now and they are fine.
Your friend has a ticking time bomb.
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      11-01-2019, 04:11 PM   #28
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Quote:
Originally Posted by nissubaru View Post
I'm calling bullshit until I see a log. No way this dude is tapering to 21 at redline.
helix does wonders

21.6 psi at 6000rpm


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      11-01-2019, 07:29 PM   #29
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Stock turbos do not like 475 hp and above
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      11-02-2019, 05:00 AM   #30
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Quote:
Originally Posted by nicky dj View Post
You need a custom tune with inlets. The OTS maps are tuned specifically without inlets. Correct me if I'm wrong but I heard the car runs worse with inlets and the OTS maps.
Yes, OTS maps are produced for vehicles without inlets. No, car does not run worse with inlets and OTS maps. My experience is that performance improves modestly (based on testing with virtual dyno) with inlets and MHD maps once the DME adjusts itself and that driveability is unaffected. Of course, maximum benefits would be obtained with a custom tune
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      03-31-2020, 11:23 AM   #31
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Quote:
Originally Posted by rsyed07 View Post
With a stage 2+ if your maintenance is up to date your looking at 375-390whp.
on 93 Octane.

If you did full bolt ons (upgraded intercooler, inlets, dual cone filter intakes, downpipes) and run a small mix of e85 like 30% you should hit about 440whp with 93 octane mixed.


Breaking 500whp on stock turbos will require higher content of e85, upgraded fuel pump and/or meth injection and a custom tune. But your stock turbos will hate you since you'll be pushing them beyond 21psi.
+
so adding stage2 LPFP would require custom tune or MHD 2+ will be able to handle E85 on stage2 Fuel pump?
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      03-31-2020, 12:15 PM   #32
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Quote:
Originally Posted by MEN54 View Post
Quote:
Originally Posted by rsyed07 View Post
With a stage 2+ if your maintenance is up to date your looking at 375-390whp.
on 93 Octane.

If you did full bolt ons (upgraded intercooler, inlets, dual cone filter intakes, downpipes) and run a small mix of e85 like 30% you should hit about 440whp with 93 octane mixed.


Breaking 500whp on stock turbos will require higher content of e85, upgraded fuel pump and/or meth injection and a custom tune. But your stock turbos will hate you since you'll be pushing them beyond 21psi.
+
so adding stage2 LPFP would require custom tune or MHD 2+ will be able to handle E85 on stage2 Fuel pump?
You can run the e30 map on a healthy stock fuel pump. Up to e60 on a stage 2 fuel pump. Full e85 would require a stage 3 and PI or a helix overdrive.
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      03-31-2020, 12:36 PM   #33
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[QUOTE=nicky dj;25991356]You can run the e30 map on a healthy stock fuel pump. Up to e60 on a stage 2 fuel pump. Full e85 would require a stage 3 and PI or a helix overdrive.[/QUO



pardon me, what is PI?
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      03-31-2020, 01:18 PM   #34
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[QUOTE=MEN54;25991434]
Quote:
Originally Posted by nicky dj View Post
You can run the e30 map on a healthy stock fuel pump. Up to e60 on a stage 2 fuel pump. Full e85 would require a stage 3 and PI or a helix overdrive.[/QUO



pardon me, what is PI?
Port injection
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      03-31-2020, 03:18 PM   #35
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[QUOTE=NoGuru;25991650]
Quote:
Originally Posted by MEN54 View Post

Port injection
Damn, too much time, money investment,

i have aftermarket CP, FMIC, DCIs, oil Catch can, with MHD and XHP Tunes, i will just add vrsf catted down pipe and run my car on MHD Stage 2+ and done with it, rest of the money i will spend on Bavsound upgrades
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      03-31-2020, 03:32 PM   #36
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[QUOTE=MEN54;25992179]
Quote:
Originally Posted by NoGuru View Post
Quote:
Originally Posted by MEN54 View Post

Port injection
Damn, too much time, money investment,

i have aftermarket CP, FMIC, DCIs, oil Catch can, with MHD and XHP Tunes, i will just add vrsf catted down pipe and run my car on MHD Stage 2+ and done with it, rest of the money i will spend on Bavsound upgrades
Inlets & outlets upgrade
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      03-31-2020, 05:17 PM   #37
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Add an FMIC, inlets and outlets and get a custom tuner you may be able to get 400-440 with 91 ACN. Can't ask for more and that's decently good power as is.
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      03-31-2020, 07:49 PM   #38
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[QUOTE=mweisdorfer;25992241]
Quote:
Originally Posted by MEN54 View Post
Inlets & outlets upgrade
Ok, so you are saying that i should do catted DPs, inlets and outlets even i wont run custom tune? and why?

sorry i am newbie
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      03-31-2020, 09:35 PM   #39
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[QUOTE=MEN54;25993129]
Quote:
Originally Posted by mweisdorfer View Post
Quote:
Originally Posted by MEN54 View Post
Inlets & outlets upgrade
Ok, so you are saying that i should do catted DPs, inlets and outlets even i wont run custom tune? and why?

sorry i am newbie
Why catted downpipes? Do you live in a state that has emissions checks?

If not, go catless downpipes. Much cheaper & more HP/ Torque

I assume you have a 5 or 7" FMIC?

1.75 inlets & 2" outlets won't upset MHD. When you decide to run a custom tune from say Wedge you will be able to really take advantage of the custom tune because you have inlets & outlets.

If anything you will gain some HP & Torque. In addition, you make your entire intake system extremely efficient. Your turbos will be happy. You will certainly prolong the life of your turbos.

If you go with catted down pipes, do a secondary cat delete @ replace them w/ Vibrant 1792 Resonators.
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      03-31-2020, 10:02 PM   #40
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[QUOTE=MEN54;25993129]
Quote:
Originally Posted by mweisdorfer View Post
Quote:
Originally Posted by MEN54 View Post
Inlets & outlets upgrade
Ok, so you are saying that i should do catted DPs, inlets and outlets even i wont run custom tune? and why?

sorry i am newbie
Get a custom tune if you get inlets. You are trying to maximize HP on 91ACN with stock turbos, correct?
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      03-31-2020, 11:23 PM   #41
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[QUOTE=nicky dj;25993497]
Quote:
Originally Posted by MEN54 View Post
Get a custom tune if you get inlets. You are trying to maximize HP on 91ACN with stock turbos, correct?
No, I am not trying to maximize turbos.
I want to use MHD Stage 2 plus and it requires FMIC upgrade which I have already and high flow down pipes.

Currently on MHD stage 1 plus.

I also have XHp stage3


Thanks
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      03-31-2020, 11:25 PM   #42
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[QUOTE=mweisdorfer;25993398]
Quote:
Originally Posted by MEN54 View Post
Why catted downpipes? Do you live in a state that has emissions checks?

If not, go catless downpipes. Much cheaper & more HP/ Torque

I assume you have a 5 or 7" FMIC?

1.75 inlets & 2" outlets won't upset MHD. When you decide to run a custom tune from say Wedge you will be able to really take advantage of the custom tune because you have inlets & outlets.

If anything you will gain some HP & Torque. In addition, you make your entire intake system extremely efficient. Your turbos will be happy. You will certainly prolong the life of your turbos.

If you go with catted down pipes, do a secondary cat delete @ replace them w/ Vibrant 1792 Resonators.
Sorry I am newbie to n54 upgrades, what is " do a secondary cat delete @ replace them w/ Vibrant 1792 Resonators."? And yes I am in NY and it requires emissions checks.

Last edited by MEN54; 03-31-2020 at 11:41 PM..
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      04-01-2020, 01:06 AM   #43
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[QUOTE=MEN54;25993685]
Quote:
Originally Posted by mweisdorfer View Post
Quote:
Originally Posted by MEN54 View Post
Why catted downpipes? Do you live in a state that has emissions checks?

If not, go catless downpipes. Much cheaper & more HP/ Torque

I assume you have a 5 or 7" FMIC?

1.75 inlets & 2" outlets won't upset MHD. When you decide to run a custom tune from say Wedge you will be able to really take advantage of the custom tune because you have inlets & outlets.

If anything you will gain some HP & Torque. In addition, you make your entire intake system extremely efficient. Your turbos will be happy. You will certainly prolong the life of your turbos.

If you go with catted down pipes, do a secondary cat delete @ replace them w/ Vibrant 1792 Resonators.
Sorry I am newbie to n54 upgrades, what is " do a secondary cat delete @ replace them w/ Vibrant 1792 Resonators."? And yes I am in NY and it requires emissions checks.
All sound related. If you're getting downpipes and want to muffle sound go catted, I'd you want slightly more flow go catless. Either in California will cause you to not pass smog, not sure about New York.
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      04-01-2020, 09:46 PM   #44
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[QUOTE=nicky dj;25993857]
Quote:
Originally Posted by MEN54 View Post
All sound related. If you're getting downpipes and want to muffle sound go catted, I'd you want slightly more flow go catless. Either in California will cause you to not pass smog, not sure about New York.
If dp upgrade is sound related then why MHD Stage 2 plus require high flow cattles/catted down pipes?
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