TheSt|G Dyno Day (You asked for it for long enough)

TheSt|G · 07-22-2014, 12:49 PM

Quote:

Originally Posted by TheAxiom

Pics of the Fiance's dyno.

Sure(might be the first time you have made that request and I have it on hand).

Looks like the usual M54 dyno with the usual ~6k RPM dump. Further validated my thoughts that both revving out the M54 is kinda silly, and the 7k rpm redline bump the ZHP got was pointless.

MarkkyyMan · 07-22-2014, 01:18 PM

The head will only flow so much air.

Surge709 · 07-22-2014, 01:23 PM

You continue to prove why your 128i is the best example of what can be achieved! Amazing job with the mods, the tune, and all other things!

TheSt|G · 07-22-2014, 01:37 PM

Quote:

Originally Posted by MarkkyyMan

The head will only flow so much air.

Indeed. And I don't mean any of that as a slight against the M54. I love that motor and that car.

Quote:

Originally Posted by Surge709

You continue to prove why your 128i is the best example of what can be achieved! Amazing job with the mods, the tune, and all other things!

Hah, thanks.

Taskmaster · 07-22-2014, 01:49 PM

Quote:

Originally Posted by TheSt|G

Sure(might be the first time you have made that request and I have it on hand).

Looks like the usual M54 dyno with the usual ~6k RPM dump. Further validated my thoughts that both revving out the M54 is kinda silly, and the 7k rpm redline bump the ZHP got was pointless.

Something is not right with that graph - low end torque is weak, and the power drops off fast! - Otherwise 200whp is VERY healthy for a ZHP. The increased redline wasn't for peak power, it was to increase the overall average power putting the car back at about 5000RPM with a 7000RPM upshift.

Obioban · 07-22-2014, 02:18 PM

^ might have been pulling timing as well, it was quite hot out. Hotter still for her car, as she went second.

TheSt|G · 07-22-2014, 02:33 PM

Quote:

Originally Posted by TheAxiom

Something is not right with that graph - low end torque is weak, and the power drops off fast! - Otherwise 200whp is VERY healthy for a ZHP. The increased redline wasn't for peak power, it was to increase the overall average power putting the car back at about 5000RPM with a 7000RPM upshift.

Quote:

Originally Posted by Obioban

^ might have been pulling timing as well, it was quite hot out. Hotter still for her car, as she went second.

Probably a combination of that and the normal M54 fall off.

As for the low end torque, perhaps it is Besian time.

JimD · 07-22-2014, 03:01 PM

Thanks for the dyno results, Stig. Getting that last ~15hp would only be for bragging rights. If it pulled to redline on the trajectory it was on 4k-6k, it looks like it's an easy 15 and right at 300 adjusted for losses. It could also be that even at a lower ambient temperature it doesn't climb that fast 6K-7K (if for instance there is a restriction in flow (although that should be a smoother transition than the graph shows now 6-7K). Wouldn't be any major difference. 280+ is plenty stout!

Taskmaster · 07-22-2014, 03:35 PM

I have heard stories of a sensitive MS45 ecu pulling timing because of the DISA flap causing noise/bad knock sensor. Who knows anymore.

Obioban · 07-22-2014, 03:38 PM

Quote:

Originally Posted by JimD

Thanks for the dyno results, Stig. Getting that last ~15hp would only be for bragging rights. If it pulled to redline on the trajectory it was on 4k-6k, it looks like it's an easy 15 and right at 300 adjusted for losses. It could also be that even at a lower ambient temperature it doesn't climb that fast 6K-7K (if for instance there is a restriction in flow (although that should be a smoother transition than the graph shows now 6-7K). Wouldn't be any major difference. 280+ is plenty stout!

It went rich right as power dropped, so extremely likely it was pulling timing, not a flow issue.

Kizzu · 07-22-2014, 03:48 PM

Quote:

Originally Posted by TheSt|G

All steady until the top end where timing was pulled for the heat and the engine went super rich.

just for curiosity, but steady as in what figures? top 14's?
ps I'm asking as I recently tuned my n52 from euro spec 125i to 130i and simply want to see other n52 afr.

Taskmaster · 07-22-2014, 03:54 PM

Quote:

Originally Posted by Kizzu

just for curiosity, but steady as in what figures? top 14's?
ps I'm asking as I recently tuned my n52 from euro spec 125i to 130i and simply want to see other n52 afr.

I've seen A/F on top end in the low 13s.

Kizzu · 07-22-2014, 03:57 PM

Quote:

Originally Posted by TheAxiom

I've seen A/F on top end in the low 13s.

woaaah, I've seen top 14's steady till 6.3k then went richer to mid 13's

Taskmaster · 07-22-2014, 10:43 PM

Quote:

Originally Posted by Kizzu

woaaah, I've seen top 14's steady till 6.3k then went richer to mid 13's

That's what I just said.

Black Prinz · 07-23-2014, 01:22 PM

Quote:

Originally Posted by Surge709

You continue to prove why your 128i is the best example of what can be achieved! Amazing job with the mods, the tune, and all other things!

+ 1 & why I look forward to Stig's contributions.

Thank You Sir!

TheSt|G · 07-24-2014, 07:22 AM

Quote:

Originally Posted by Black Prinz

+ 1 & why I look forward to Stig's contributions.

Thank You Sir!

Thanks guys.

As mentioned before, I'll try to get back when it is a bit cooler out to do some glory pulls for peak power.

andrey_gta · 07-26-2014, 10:32 PM

Not to steer thread offside

Quote:

Originally Posted by TheSt|G

revving out the M54 is kinda silly, and the 7k rpm redline bump the ZHP got was pointless.

But would Schrick Cams fix the upper end @ extra rpm?

Arent ZHP cams desirable to begin with too?

Taskmaster · 07-26-2014, 11:18 PM

Quote:

Originally Posted by andrey_gta

Not to steer thread offside

But would Schrick Cams fix the upper end @ extra rpm?

Arent ZHP cams desirable to begin with too?

The ZHP is more desirable as a whole, but the cams themselves are a bust. But yes, with the Shrick cams, peak power is at 67-6800rpm instead of 6000rpm and they are probably up over 15whp on the standard cams at 7000rpm.

Taskmaster · 07-26-2014, 11:20 PM

I want to see what a header specific tune is worth on these cars - more torque and more top end power. Has Evolve stated they are interested in such?

Obioban · 07-27-2014, 05:46 AM

Quote:

Originally Posted by TheAxiom

I want to see what a header specific tune is worth on these cars - more torque and more top end power. Has Evolve stated they are interested in such?

St|g is running a header specific tune.

Taskmaster · 07-27-2014, 09:11 AM

Quote:

Originally Posted by Obioban

St|g is running a header specific tune.

I don't think he is at all...

Taskmaster · 07-27-2014, 09:18 AM

07-22-2014, 01:18 PM	#46
MarkkyyMan Captain 38 Rep 701 Posts Drives: 2010 BMW 128i Join Date: Dec 2009 Location: Indiana, U.S. iTrader: (0)	The head will only flow so much air.
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07-22-2014, 01:23 PM	#47
Surge709 New Member 0 Rep 7 Posts Drives: Silver e39 M5 Join Date: Jun 2009 Location: Stamford CT iTrader: (0)	You continue to prove why your 128i is the best example of what can be achieved! Amazing job with the mods, the tune, and all other things! __________________ 2003 M5: 355/345 brembos, 18" BBS RG-Rs, Evolve CAI, Intrave, Eurodash, Zionville radiator, GC coilovers (430/380), Eibach sways, Powerflex bushings, V1, Laser Intercept, Uniden CB & scanner, illuminated sills, Evolve Headers, SS Cats/X-pipe/street exhaust, Evolve Dyno Tune (Alpha-N), Leatherique!
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07-22-2014, 02:18 PM	#50
Obioban Emperor 1614 Rep 2,753 Posts Drives: M3, M3, M5, M5 Join Date: Apr 2008 Location: West Chester, PA iTrader: (0) Garage List 2008 BMW M5 [0.00] 2017 BMW i3 [0.00] 2005 BMW M3 Coupe [0.00] 2001 BMW M5 [0.00]	^ might have been pulling timing as well, it was quite hot out. Hotter still for her car, as she went second. Last edited by Obioban; 07-22-2014 at 02:32 PM..
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07-22-2014, 03:01 PM	#52
JimD Brigadier General 368 Rep 3,547 Posts Drives: 128i convertible Join Date: Apr 2009 Location: Lexington, SC iTrader: (0)	Thanks for the dyno results, Stig. Getting that last ~15hp would only be for bragging rights. If it pulled to redline on the trajectory it was on 4k-6k, it looks like it's an easy 15 and right at 300 adjusted for losses. It could also be that even at a lower ambient temperature it doesn't climb that fast 6K-7K (if for instance there is a restriction in flow (although that should be a smoother transition than the graph shows now 6-7K). Wouldn't be any major difference. 280+ is plenty stout! __________________ 128i Convertible, MT, Alpine White, Black Top, Taupe Leatherette, Walnut, Sport Ordered 5/22/09, Completed 6/4/09, At Port 6/9/09, On the Georgia Highway 6/13/09, Ship Arrived Charleston 6/24/09 at 10pm, PCD 7/21/09
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07-22-2014, 03:35 PM	#53
Taskmaster Banned 2465 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	I have heard stories of a sensitive MS45 ecu pulling timing because of the DISA flap causing noise/bad knock sensor. Who knows anymore.
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07-26-2014, 11:20 PM	#63
Taskmaster Banned 2465 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	I want to see what a header specific tune is worth on these cars - more torque and more top end power. Has Evolve stated they are interested in such?
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07-27-2014, 09:18 AM	#66
Taskmaster Banned 2465 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)
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