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      05-09-2016, 02:35 PM   #1
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maximum power out of an unopened N55?

Whats the max power you can pull out of the N55 without opening the engine and keeping the stock tranny and drivetrain? other upgrades outside the engines are allowed.
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      05-09-2016, 02:39 PM   #2
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so far...mid 600's (rwhp)
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      05-09-2016, 04:00 PM   #3
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Quote:
Originally Posted by ronanz View Post
so far...mid 600's (rwhp)
Sounds about right
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      05-09-2016, 05:44 PM   #4
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Quote:
Originally Posted by ronanz
so far...mid 600's (rwhp)
That's pretty fantastic. Considering the custom turbo kit has not yet been developed yet those numbers are awesome.
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      05-12-2016, 08:43 AM   #5
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Quote:
Originally Posted by Chicken_Joe View Post
That's pretty fantastic. Considering the custom turbo kit has not yet been developed yet those numbers are awesome.
not trying to sound rude, maybe I'm misunderstanding what you're saying, but that's where those numbers came from, a stage 3 custom turbo.
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      05-12-2016, 10:42 AM   #6
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On the n55, without upgraded turbo but everything else FOB and tune you would get up to 400whp (within the safety limits).
This means you swap out and replace:
Charge pipe
Intercooler
Down pipe
Intake
Fuel pump
Add in meth kit and some e85 mix.

Turbo upgrade like Pure Stage 2, with port injection and custom ecu tunes will get 500+ whp.
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      05-12-2016, 11:19 AM   #7
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What is recommended to change for ecu tune+catless downpipe?
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      05-12-2016, 11:32 AM   #8
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Quote:
Originally Posted by obriennathaniel
Quote:
Originally Posted by Chicken_Joe View Post
That's pretty fantastic. Considering the custom turbo kit has not yet been developed yet those numbers are awesome.
not trying to sound rude, maybe I'm misunderstanding what you're saying, but that's where those numbers came from, a stage 3 custom turbo.
Ahh I see. I didn't know anyone had developed one yet.
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      05-12-2016, 11:37 AM   #9
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Quote:
Originally Posted by Chicken_Joe View Post
Ahh I see. I didn't know anyone had developed one yet.
Yea ACF has one they're testing, that's where the numbers came from. 645 whp or so, I forgot the exact number. I know there's a few other tuners out there with one in development like Enzo, and Pure has one that they say is strictly just to see what they can do but wont release it to the public and haven't said much about it.
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      05-12-2016, 11:39 AM   #10
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Quote:
Originally Posted by obriennathaniel
Quote:
Originally Posted by Chicken_Joe View Post
Ahh I see. I didn't know anyone had developed one yet.
Yea ACF has one they're testing, that's where the numbers came from. 645 whp or so, I forgot the exact number. I know there's a few other tuners out there with one in development like Enzo, and Pure has one that they say is strictly just to see what they can do but wont release it to the public and haven't said much about it.
Lol awee pure seems like they would be the ones to do it since you know, that's what they do best.
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      05-18-2016, 12:55 PM   #11
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In my experience the stock clutch will not handle 600 whp (or rather the accompanying TQ). So just wanna add that data point.

Last edited by zinner; 05-18-2016 at 04:13 PM.
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      05-18-2016, 03:06 PM   #12
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Yeah, what's interesting. Engine is ok for 600hp, but what about the 335xi xdrive transmission, what is the limit of hp ant nm?
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      05-18-2016, 04:12 PM   #13
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Quote:
Originally Posted by terminator335i View Post
On the n55, without upgraded turbo but everything else FOB and tune you would get up to 400whp (within the safety limits). .
I would disagree with that. 400 whp on a dyno jet, where lets say stock is 270, on a N55 is not a realistic goal for a FBO F3x chassis.

FOB to me is intake/exhaust/intercooler/charge pipes

Meth and E85 (mix) would fall outside FOB, guess you go either way on that.
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      05-18-2016, 05:33 PM   #14
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Quote:
Originally Posted by cailas View Post
Yeah, what's interesting. Engine is ok for 600hp, but what about the 335xi xdrive transmission, what is the limit of hp ant nm?
The stated torque limit (HP is irrelevant) for the ZF8HP45 automatic transmission many of us have is 450NM.

obriennathaniel and I are far above that limit already and we have had no drivetrain issues to date.
Rumor is that ZF understates the limit, like many other major manufacturers, with good reason, on the lesser versions of the ZF8HP transmissions, but I have heard rumors that the ZF8HP45 could possibly withstand up to the full 900NM as their top of the line ZF8HP90 used in several other vehicles such as the Rolls Royce, Charger Hellcat, and others.

I don't know of a single case of someone with a tuned N55 breaking their ZF transmission to date, so we're all sort of playing the waiting game to see how far we can actually take it and who will be the first to break something major.

Also the official number for stage 3 development turbos from ACF was 647WHP, but they have moved onto an even larger turbo for their stage 3 and have goals that it will reach 700WHP.
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      05-18-2016, 05:38 PM   #15
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Quote:
Originally Posted by zinner View Post
I would disagree with that. 400 whp on a dyno jet, where lets say stock is 270, on a N55 is not a realistic goal for a FBO F3x chassis.

FOB to me is intake/exhaust/intercooler/charge pipes

Meth and E85 (mix) would fall outside FOB, guess you go either way on that.
I agree that Meth doesnt fall under **FBO**, because the installation is a bit more than a simple bolt-on, but E85 mixes are absolutely under the FBO category, driving a little out of the way to a gas station that sells E85 fuel is much easier than any bolt-on mod.
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      05-18-2016, 11:35 PM   #16
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376rwhp.
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