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Default More 800whp N54 Dyno Testing - 11-17-2015, 02:40 PM

Hey guys,

Spent some time on the dyno today with Payam@VM's car. Main purpose of testing was to evaluate the new JB4 single turbo O2 sensor calibration and JB4 port injection control.

In doing that it appears we also upped the official bar a bit for single turbo N54 power.

Notes:

1) This big turbo really sings at 35psi. It's starting to get to the point that we need to add 4bar and 5bar MAP sensor support to the JB4. It's on my radar.
2) Car has a major issue dropping timing in cyl4. We have no idea why.
3) The JB4 o2 sensor control is working very well. It's amazing how lean we were running previously without really giving it much thought. The second dyno file is a comparison to his testing a couple months ago. AFR was creeping up to the mid 13s. If you're running a single turbo and not using the latest JB4 o2 sensor control firmware, your AFR is much leaner than you think it is.
4) The JB4 port injection control is working perfectly as well. It's convenient being able to datalog and change it from the same JB4 interface and it's nice that it finally self corrects for low fuel pressure. Much more planned for this.
5) Given the AFRs are accurate now we're using *a lot* more fuel than we did previously. Maintaining low pressure on E80 (as read via JB4 flex fuel sensor) has become an issue again. Been funneling data to Fuel-IT who has some new stuff in the works.
6) I heart JB4 anti-lag.
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Default 11-17-2015, 02:49 PM

niiiiiice!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


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///Monst3r ///Monst3r is offline
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Default 11-17-2015, 03:04 PM

When will new firmware be posted?


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Default 11-17-2015, 03:07 PM

woohoooo!!! now lets race at 23psi next event! lol.


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Default 11-17-2015, 03:18 PM

Woah. That's insane!!!
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Default 11-17-2015, 05:32 PM

If it makes more power "leaner" why not try to duplicate? Low 12s sounds safer but if engine likes it so be it...otherwise very respectable...
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Default 11-17-2015, 05:44 PM

Wow


Crazy numbers
And spool omg


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Default 11-17-2015, 05:45 PM

Quote:
Originally Posted by Ando @ BMS
woohoooo!!! now lets race at 23psi next event! lol.
LOL, I hate you!

Quote:
Originally Posted by AbacusRacingN54
If it makes more power "leaner" why not try to duplicate? Low 12s sounds safer but if engine likes it so be it...otherwise very respectable...
It didn't make more power though, that's the good part! So now we have a much safer tune that matches the AFR in the logs as the tail pipe.


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Default 11-17-2015, 05:52 PM

Quote:
Originally Posted by ///Monst3r
When will new firmware be posted?
I posted it today in the single turbo thread.


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Default 11-17-2015, 06:05 PM

Quote:
Originally Posted by Ando @ BMS
woohoooo!!! now lets race at 23psi next event! lol.
I was thinking the same thing Congrats on the results though Payam.
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Default 11-17-2015, 06:30 PM

What size turbo did you shoehorn in there Payam?


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Default 11-17-2015, 07:00 PM

Quote:
Originally Posted by Ando @ BMS
woohoooo!!! now lets race at 23psi next event! lol.


Congrats man...those are some impressive numbers!



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Default 11-17-2015, 07:40 PM

Quote:
Originally Posted by erichale
What size turbo did you shoehorn in there Payam?
PTE Gen 2 6870 .84AR


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Default 11-17-2015, 07:57 PM

Thats funny, I was looking at the same one but i'm considering the divided 1.15 a/r


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Default 11-17-2015, 07:59 PM

Built motor??
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Default 11-17-2015, 09:24 PM

Quote:
Originally Posted by Vorsprung_CJB
Built motor??
He's going to need one soon I think. This is a beat up old stock motor.


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Default 11-17-2015, 09:27 PM

I want to see some rolling anti lag speedo footage. This thing has to be monsterous


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Default 11-17-2015, 10:39 PM

Quote:
Originally Posted by Newguy123
I want to see some rolling anti lag speedo footage. This thing has to be monsterous
Absolutely!


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Default 11-18-2015, 01:09 AM

WOW.......My mind is COMPLETELY BLOWN after seeing this!!! And this is on a
"old stock motor".......Damn these N54's really handle power extremely well to the point that 500rwhp-600rwhp should be NO PROBLEM for these motors in stock form. Man......I WISH MY LOGS COULD LOOK LIKE THAT!!!!!! Haha....But seriously....I cant imagine the way that thing pulls as soon as it gets into boost.....


I think its ok to say that if big singles with the right modifications and proper tuning can make 800+RWHP CONSISTENTLY... the n54 engine is getting into 2GZGTE territory The 2JZGTE motor is probably one of the best motors to modify by throwing on a big single and some supporting mods and it comfortable makes 600rwhp-800rwhp COMFORTABLY.... Looks like the N54 does to and were just getting started Congrats to Terry, AGAIN for providing the N54 community with more and more and more POWER!!! Looks like I might have to SERIOUSLY look into something more than the RB's I have on the car already...WOW...800RWHP!!!! Seriously CONGRATS and look forward to seeing even higher numbers


E92 A/W JB4 G5 ISO w/WEDGE PERFORMANCE FLASH+FBO+RB's+LSD+60% E85/93 mix 508whp 531 ft lb torque 11.73 @121mph on street tires with a 2.1 60'!!! NO METH!
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Default 11-18-2015, 01:12 AM

Quote:
Originally Posted by boostaholic
WOW.......My mind is COMPLETELY BLOWN after seeing this!!! And this is on a
"old stock motor".......Damn these N54's really handle power extremely well to the point that 500rwhp-600rwhp should be NO PROBLEM for these motors in stock form. Man......I WISH MY LOGS COULD LOOK LIKE THAT!!!!!! Haha....But seriously....I cant imagine the way that thing pulls as soon as it gets into boost.....


I think its ok to say that if big singles with the right modifications and proper tuning can make 800+RWHP CONSISTENTLY... the n54 engine is getting into *2JZGTE* territory The 2JZGTE motor is probably one of the best motors to modify by throwing on a big single and some supporting mods and it comfortable makes 600rwhp-800rwhp COMFORTABLY.... Looks like the N54 does to and were just getting started Congrats to Terry, AGAIN for providing the N54 community with more and more and more POWER!!! Looks like I might have to SERIOUSLY look into something more than the RB's I have on the car already...WOW...800RWHP!!!! Seriously CONGRATS and look forward to seeing even higher numbers
had to make a spelling correction lol


E92 A/W JB4 G5 ISO w/WEDGE PERFORMANCE FLASH+FBO+RB's+LSD+60% E85/93 mix 508whp 531 ft lb torque 11.73 @121mph on street tires with a 2.1 60'!!! NO METH!
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Default 11-18-2015, 02:52 AM

Great results!

Do you have some videos?


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Default 11-18-2015, 07:59 AM

My timing on cylinder 2 is often dropping behind the other 5 so I hope you find an answer to your timing drops. However there's not much comparison of a stock turbo car to this. I've changed coils and plugs so maybe bad injector or carbon build up causing a hot spot and unusual flame front? False knock maybe?


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Default 11-18-2015, 09:45 AM

Quote:
Originally Posted by Terry @ BMS
I posted it today in the single turbo thread.
terry, what back end flash adjustments are required for this update, if any


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Default 11-18-2015, 09:54 AM

A higher fuel scalar but log it and we'll see.


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