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      02-02-2017, 04:54 PM   #1
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Safest way to 400hp N55

I just purchased a 2012 BMW 335i coupe. I'll be using it as DD so I'm wanting to stay as far away from issues as I can but I also want more power. What would be the safest way I could reach 400+hp? I was thinking DCI, FMIC, MHD, then Catless DP in that order.
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      02-02-2017, 05:33 PM   #2
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Quote:
Originally Posted by Aseneph
I just purchased a 2012 BMW 335i coupe. I'll be using it as DD so I'm wanting to stay as far away from issues as I can but I also want more power. What would be the safest way I could reach 400+hp? I was thinking DCI, FMIC, MHD, then Catless DP in that order.
Did you mean 400 HP to the wheels or the crank? if you meant to the crank then yes those mods will get you there with pretty good reliability if it's tuned properly. I highly recommend getting a custom tune with e85. if you want 400 to the wheels then you'll need an upgraded turbo. N55 has a single intake so no DCI.
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      02-02-2017, 06:08 PM   #3
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^^above poster is correct.

n55 will max out around 380ish whp. need an upgraded turbo to reach 400whp (at least on the e-chassis).

Stage one will get you into the low-mid 400s (40-75whp above stock turbo depending on fueling) while stage 2 will net you as much as your fueling permits (600+whp).
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      02-03-2017, 12:06 AM   #4
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Quote:
Originally Posted by Johnny Boost View Post
Quote:
Originally Posted by Aseneph
I just purchased a 2012 BMW 335i coupe. I'll be using it as DD so I'm wanting to stay as far away from issues as I can but I also want more power. What would be the safest way I could reach 400+hp? I was thinking DCI, FMIC, MHD, then Catless DP in that order.
Did you mean 400 HP to the wheels or the crank? if you meant to the crank then yes those mods will get you there with pretty good reliability if it's tuned properly. I highly recommend getting a custom tune with e85. if you want 400 to the wheels then you'll need an upgraded turbo. N55 has a single intake so no DCI.
Sorry for not specifying but yes I meant to the crank. And thanks for the help! Is there anything else I could do just to make sure everything runs efficiently and smooth?
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      02-03-2017, 07:48 AM   #5
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Quote:
Originally Posted by Aseneph View Post
Quote:
Originally Posted by Johnny Boost View Post
Quote:
Originally Posted by Aseneph
I just purchased a 2012 BMW 335i coupe. I'll be using it as DD so I'm wanting to stay as far away from issues as I can but I also want more power. What would be the safest way I could reach 400+hp? I was thinking DCI, FMIC, MHD, then Catless DP in that order.
Did you mean 400 HP to the wheels or the crank? if you meant to the crank then yes those mods will get you there with pretty good reliability if it's tuned properly. I highly recommend getting a custom tune with e85. if you want 400 to the wheels then you'll need an upgraded turbo. N55 has a single intake so no DCI.
Sorry for not specifying but yes I meant to the crank. And thanks for the help! Is there anything else I could do just to make sure everything runs efficiently and smooth?
Make sure maintenance is up to date. Specifically spark plugs so that you aren't misfiring all over the place.
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      02-03-2017, 07:50 AM   #6
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Sorry for not specifying but yes I meant to the crank. And thanks for the help! Is there anything else I could do just to make sure everything runs efficiently and smooth?
You'll want to upgrade your charge pipe before you tune it.
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      02-03-2017, 09:57 AM   #7
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Quote:
Originally Posted by Johnny Boost View Post
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Originally Posted by Aseneph View Post
Sorry for not specifying but yes I meant to the crank. And thanks for the help! Is there anything else I could do just to make sure everything runs efficiently and smooth?
You'll want to upgrade your charge pipe before you tune it.
I was thinking of getting an ER FMIC with the upgraded CP and DV for my first mod
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      02-03-2017, 11:43 AM   #8
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Quote:
Originally Posted by BoosTonian View Post
^^above poster is correct.

n55 will max out around 380ish whp. need an upgraded turbo to reach 400whp (at least on the e-chassis).

Stage one will get you into the low-mid 400s (40-75whp above stock turbo depending on fueling) while stage 2 will net you as much as your fueling permits (600+whp).
Are you saying the PS1 upgrade will only net him 375whp?
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      02-03-2017, 11:49 AM   #9
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Quote:
Originally Posted by GripAndRip View Post
Quote:
Originally Posted by BoosTonian View Post
^^above poster is correct.

n55 will max out around 380ish whp. need an upgraded turbo to reach 400whp (at least on the e-chassis).

Stage one will get you into the low-mid 400s (40-75whp above stock turbo depending on fueling) while stage 2 will net you as much as your fueling permits (600+whp).
Are you saying the PS1 upgrade will only net him 375whp?
Scratch that 400-420hp with 15% loss assumed. So even worse, 340-357 WHP?!
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      02-03-2017, 03:53 PM   #10
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Originally Posted by GripAndRip View Post
Scratch that 400-420hp with 15% loss assumed. So even worse, 340-357 WHP?!
No, he is saying mid 400whp which has never been achieved yet. You will not see 600+whp on a PS2 either. His numbers are pretty high. PS1 max so far is at 426whp and PS2 seems pretty topped out at 560whp. Those are both being pushed extremely hard and aren't DD numbers.

For 400 crank hp do the charge pipe, tune, dp and fmic. If you have at least 93 oct you are going to be right around 400hp (340whp). If you are stuck with 91 oct you will probably need meth injection to get there and it will take you a bit higher even. If you have E85 available you can hit 360whp easily.
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      02-03-2017, 04:03 PM   #11
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Quote:
Originally Posted by JETmn View Post
Quote:
Originally Posted by GripAndRip View Post
Scratch that 400-420hp with 15% loss assumed. So even worse, 340-357 WHP?!
No, he is saying mid 400whp which has never been achieved yet. You will not see 600+whp on a PS2 either. His numbers are pretty high. PS1 max so far is at 426whp and PS2 seems pretty topped out at 560whp. Those are both being pushed extremely hard and aren't DD numbers.

For 400 crank hp do the charge pipe, tune, dp and fmic. If you have at least 93 oct you are going to be right around 400hp (340whp). If you are stuck with 91 oct you will probably need meth injection to get there and it will take you a bit higher even. If you have E85 available you can hit 360whp easily.
Yeah I only have 91, and e85 around me. But thanks for the help!
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      02-03-2017, 04:09 PM   #12
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Quote:
Originally Posted by Aseneph View Post
Quote:
Originally Posted by JETmn View Post
Quote:
Originally Posted by GripAndRip View Post
Scratch that 400-420hp with 15% loss assumed. So even worse, 340-357 WHP?!
No, he is saying mid 400whp which has never been achieved yet. You will not see 600+whp on a PS2 either. His numbers are pretty high. PS1 max so far is at 426whp and PS2 seems pretty topped out at 560whp. Those are both being pushed extremely hard and aren't DD numbers.

For 400 crank hp do the charge pipe, tune, dp and fmic. If you have at least 93 oct you are going to be right around 400hp (340whp). If you are stuck with 91 oct you will probably need meth injection to get there and it will take you a bit higher even. If you have E85 available you can hit 360whp easily.
Yeah I only have 91, and e85 around me. But thanks for the help!
I plan on running an e30 map for those numbers. I won't be doing a pure turbo upgrade for a while.
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      02-03-2017, 06:35 PM   #13
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Quote:
Originally Posted by JETmn View Post
No, he is saying mid 400whp which has never been achieved yet. You will not see 600+whp on a PS2 either. His numbers are pretty high. PS1 max so far is at 426whp and PS2 seems pretty topped out at 560whp. Those are both being pushed extremely hard and aren't DD numbers.

For 400 crank hp do the charge pipe, tune, dp and fmic. If you have at least 93 oct you are going to be right around 400hp (340whp). If you are stuck with 91 oct you will probably need meth injection to get there and it will take you a bit higher even. If you have E85 available you can hit 360whp easily.
Do you have any idea of what type of hp/tq numbers to expect with MHD e85 tune, dp, fmic, running the 93/40% meth mix??
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      02-03-2017, 07:52 PM   #14
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Originally Posted by BKBMW335I View Post
Do you have any idea of what type of hp/tq numbers to expect with MHD e85 tune, dp, fmic, running the 93/40% meth mix??
370whp max
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      02-03-2017, 08:49 PM   #15
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370whp max
Thanks bro, I'll take it.
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      02-05-2017, 11:45 AM   #16
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370whp max
This is where I am now. Frank at TechTuning maxed it out with what I have installed. Can't hammer it from a stand still cuz bits would be flying all over the road. 1 800 new differential. Running 93, nothing else special. Pulls hard but I need some work done. Plugs, coils, re-flash etc. Get rid of a mid range stutter. Read my sig...all I can really do with the N55 based upon what I am running. Keep it for a few years then in to a my M dream car!
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      02-05-2017, 03:36 PM   #17
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I was thinking of getting an ER FMIC with the upgraded CP and DV for my first mod
If you get the ER FMIC get the black anodized version, looks sweet cuz you can't see it through the grille!
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      02-05-2017, 03:57 PM   #18
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Quote:
Originally Posted by JETmn View Post
No, he is saying mid 400whp which has never been achieved yet. You will not see 600+whp on a PS2 either. His numbers are pretty high. PS1 max so far is at 426whp and PS2 seems pretty topped out at 560whp. Those are both being pushed extremely hard and aren't DD numbers.

For 400 crank hp do the charge pipe, tune, dp and fmic. If you have at least 93 oct you are going to be right around 400hp (340whp). If you are stuck with 91 oct you will probably need meth injection to get there and it will take you a bit higher even. If you have E85 available you can hit 360whp easily.
Link to the 426whp with PS1 please!
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      02-05-2017, 11:24 PM   #19
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If you get the ER FMIC get the black anodized version, looks sweet cuz you can't see it through the grille!
My cars all blacked out. Have a chrome fmic. Love it !
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      02-06-2017, 07:58 AM   #20
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My cars all blacked out. Have a chrome fmic. Love it !
To each his own. My car is not blacked out at all. I love not seeing the FMIC through the grille!
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      02-06-2017, 08:00 AM   #21
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Link to the 426whp with PS1 please!
That was a long time ago before the PS2 came out. The next highest was 408whp I believe. I think the 426 was probably a high reading dyno. It was a FBO E series N55 with a very aggressive tune.
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      02-07-2017, 01:51 AM   #22
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Quote:
Originally Posted by 550i Beast View Post
This is where I am now. Frank at TechTuning maxed it out with what I have installed. Can't hammer it from a stand still cuz bits would be flying all over the road. 1 800 new differential. Running 93, nothing else special. Pulls hard but I need some work done. Plugs, coils, re-flash etc. Get rid of a mid range stutter. Read my sig...all I can really do with the N55 based upon what I am running. Keep it for a few years then in to a my M dream car!
370 whp or 370 at the crank ? Jb4 or flash only ? How much boost ?
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