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      03-13-2018, 03:48 PM   #1
reddemon73
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HP and Torque gain from the following mods

Hello all,

What would be your guess on gain from the following mods:

2014 F32 N55

PPK: I was told it would net me 35 HP. Is this true? What about the torque?

MPE: ???

Fabspeed catted DP: ???

Thank you.
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      03-13-2018, 07:03 PM   #2
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35-5-10
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      03-13-2018, 08:11 PM   #3
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Quote:
Originally Posted by BMWILUVU View Post
35-5-10
From my understanding though, that doesn't NECESSARILY mean +50hp net gains, right?
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      03-14-2018, 12:23 PM   #4
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Quote:
Originally Posted by jh_f30 View Post
From my understanding though, that doesn't NECESSARILY mean +50hp net gains, right?
something around there, not more than 40-50HP.

no way you're getting a 5HP gain from just a new exhaust system. all the restriction is in the factory downpipe.
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      03-15-2018, 06:23 PM   #5
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Quote:
Originally Posted by reddemon73 View Post
Hello all,

What would be your guess on gain from the following mods:

2014 F32 N55

PPK: I was told it would net me 35 HP. Is this true? What about the torque?

MPE: ???

Fabspeed catted DP: ???

Thank you.
MPPK: Nope. 19HP at the flywheel power increase

MPE: Likely no gain at all

Fabspeed catted DP: Probably heavy throttle closures and CEL without an aftermarket tune.
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      03-16-2018, 12:44 AM   #6
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No, fabspeed or HJS downpipes don't throw CELs, have an HJS with no tune and it's great.
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      03-16-2018, 05:18 AM   #7
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Quote:
Originally Posted by Lancelot View Post
No, fabspeed or HJS downpipes don't throw CELs, have an HJS with no tune and it's great.
It may eventually throw a CEL.

It's great as in feels great or have you logged for throttle closures? Power gain over stock?
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      03-16-2018, 05:26 AM   #8
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Not a single CEL since august 2017

It feels great but i have not logged throttle closures indeed, do you have a suggestion to check this? I have a Bluetooth obd connector but no proper app, and JB4 is gone.

I’m due for a tune in a couple of weeks anyway, but still interested in getting data on that
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      03-16-2018, 01:42 PM   #9
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I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
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      03-16-2018, 04:24 PM   #10
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Quote:
Originally Posted by reddemon73 View Post
Hello all,

What would be your guess on gain from the following mods:

2014 F32 N55

PPK: I was told it would net me 35 HP. Is this true? What about the torque?

MPE: ???

Fabspeed catted DP: ???

Thank you.
PPK is not going to give you 35 wheel.. Maybe at the crank.. On a dyno you will show maybe 10-15 whp/wtq gains with PPK, pretty much nothing with MPE and 10-15 with the downpipes.

Mike
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      03-16-2018, 05:47 PM   #11
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Quote:
Originally Posted by BulsaraF36 View Post
I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
Damn 2k plus dollars! Wow
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      03-16-2018, 06:31 PM   #12
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Quote:
Originally Posted by BulsaraF36 View Post
I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
Did you dyno before mppk and mpe? If so what were the results?
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      03-16-2018, 07:26 PM   #13
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Quote:
Originally Posted by ceedawg View Post
Quote:
Originally Posted by BulsaraF36 View Post
I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
Damn 2k plus dollars! Wow
I got a good deal on both so wasn't too bad. I do like the exhaust sound of MPE not to aggressive.

Quote:
Originally Posted by Munchi435i View Post
Quote:
Originally Posted by BulsaraF36 View Post
I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
Did you dyno before mppk and mpe? If so what were the results?
Unfortunately I did not do that. If you are interested I do have dyno numbers with Dinan stage 2/3.
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      03-16-2018, 07:57 PM   #14
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Mppk
Is awesome. It's not all about the dyno. Car is insanely fun with mppk. Such a sweet tune.
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      03-16-2018, 08:38 PM   #15
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Quote:
Originally Posted by BulsaraF36 View Post
I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
Since we don't have base dyno numbers to go from, we have to back calculate crank hp/tq and compare to the manufacturer's crank hp/tq claim. If we assume your car is very efficient and figure on a 12% drivetrain loss, those dyno figures are approximately 360/360 at the crank. This is a gain of 60/60 over stock.

Even if we assume your car only loses 10% from the crank to the wheels, your dyno figures still suggest around 350/350.

For the sake of discussion, if we go a step further and assume that bmw underrated the n55 stock hp/tq in the f30/32, and it's actually around 320/330, a 10% drivetrain loss still puts hp/tq gains at the crank at approximately 30/20. I believe bmw claims you can get +35/20 at the crank from mppk, so even assuming a mere 10% drivetrain loss and 320/330 stock, you still got close to the figures they claimed you could get from their tune. I'd imagine that it's certainly within the margin of error inherent in dyno runs, and extrapolating calculations like this.
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      03-17-2018, 06:12 PM   #16
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Quote:
Originally Posted by BulsaraF36 View Post
I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
I’m not an expert, but that’s a really good torque curve because of the flatness right? What about the hp curve? Seems like it peaks too early before redline though right?
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      03-17-2018, 07:20 PM   #17
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Quote:
Originally Posted by AlpineOnCoral View Post
Quote:
Originally Posted by BulsaraF36 View Post
I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
IÂÂÂÂÂÂÂÂÂ’m not an expert, but thatÂÂÂÂÂÂÂÂÂ’s a really good torque curve because of the flatness right? What about the hp curve? Seems like it peaks too early before redline though right?

yeah that's what I thought too it seems to peak early.
1st pic is with Dinan Stage 2 and 2nd pic includes runs with MPPK, Stage2 and Stage 3.
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Last edited by BulsaraF36; 03-17-2018 at 07:51 PM..
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      03-17-2018, 07:46 PM   #18
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Quote:
Originally Posted by AlpineOnCoral View Post
Quote:
Originally Posted by BulsaraF36 View Post
I had my 435i Dyno'd with MPPK and MPE it wasn't much. 317whp/319tq.
IÂ’m not an expert, but thatÂ’s a really good torque curve because of the flatness right? What about the hp curve? Seems like it peaks too early before redline though right?
For an n55, the hp curve actually looks improved to me. Stock, the n55 hp peaks at around 6000 rpm and steadily decreases from 6000-7000. The dyno here looks like it peaks at around the same rpm, but is fairly flat until redline instead of sharply declining from 6000-7000.
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      03-17-2018, 08:30 PM   #19
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Great info Bulsara! Would you mind sharing more about your car and mods?
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      03-17-2018, 08:33 PM   #20
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Thanks fuller. What are stock N55’s peaking at hp/tq on a dynojet dyno?
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      03-17-2018, 09:43 PM   #21
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Quote:
Originally Posted by AlpineOnCoral View Post
Thanks fuller. What are stock N55’s peaking at hp/tq on a dynojet dyno?
Nevermind... I just read raichean’s post. He averaged 293/307 on his stock 335.
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      03-17-2018, 10:03 PM   #22
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BulsaraF36, you avg’d ~316/318 on your three runs. If they were both autos and similar DA, dynos and fuel, you could us his as a baseline for yours, so an increase of 19 whp and 11 wtq. I saw Dinan used 12% hp and 8% to estimate drive train loss at peak. That would mean raichean baselined at 333/334 and youre at 359/346 for a gain of 26/12 with MPPK+MPE, a bit underwhelming for the price if you’re considering peak gains alone.

Of coursw, using another car on another dyno in a different location is quite a leap.

Using the same Dinan efficiency, your stage 3 setup is ripping a whopping 424/390 brake!
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