[OneThreeFive]

Summary graph of 2009 135i stock, Cobb AP Stage 1 (93 oct), Cobb AP Stage 1 (93 oct) + DP + FMIC


Additional details found here:
http://www.e90post.com/forums/showthread.php?t=523889

[banky]

just got her dyno'd today!

2007 335i 44,xxx miles.

BONE STOCK

Max HP: 263.2

Max Torque: 296.0

Dyno Type: Dyno Dynamics

*95 Degree weather*

Thoughts? it seems normal, but almost a little low? tell me something is wrong so i can tell my dealer before warranty expires 8/20/11. lol 3 sheets are provided: HP + AFR, HP + TORQUE, TORQUE + PSI

Here is HP + Torque:



HP + AFR:



Torque + PSI:



Thoughts?!?!?!

[jdbretz]

More info here:

http://www.e90post.com/forums/showthread.php?t=562348

[bigdnno98]

Pretty normal on a dyno dynamics. I dyno'd at 258rwhp/274tq in 101 degree temps on same dyno. I have an 09 e92 335i.

[Litos]

did this JB4 vs Cobb comparison back early April in 93 degree weather at Cobb's facility.

Mods: ETS, DCI and 93 Octane

facility was impressive - nice and clean and everyone looked as if they were having a great time. friendly environment with smiling faces all around.

got strapped on the dyno and away we went.

1st set of pulls were JB4 Map 1 on 14psi: average of 311whp and 350wtq
2nd set of pulls were JB4 Map 0 stock boost: average of 251whp and 290wtq
3rd set of pulls were Cobb Stage 1 on 15.5psi: average of 326whp and 385wtq


sorry for the "picture" graphs but i didn't get the screen shots emailed to me - just the logs.

[Jeffman]

Thanks for the comparisons. It seems that Cobb consistently slams down the AFR to about a constant 12 after 2900 RPM, whereas the JB4 stage 1 gradually reduces AFR starting a little later at around 3000 RPM, and whereas stock only gradually gets to 13. Isn't this the reason why Cobb fuel mileage suffers so much above 3000 RPM?

[Litos]

Originally Posted by JHR

Thanks for the comparisons. It seems that Cobb consistently slams down the AFR to about a constant 12 after 2900 RPM, whereas the JB4 stage 1 gradually reduces AFR starting a little later at around 3000 RPM, and whereas stock only gradually gets to 13. Isn't this the reason why Cobb fuel mileage suffers so much above 3000 RPM?

maybe, but it's a give and take.

i'll gladly lose a couple mpg's if it means that my car is running much safer A/F's.

that was worth it to me and it was one of the reasons why i switched.

[chancejat]

litos: map 1 on jb4 is 13psi, map 2 is 14.5......

[Litos]

Originally Posted by chancejat

litos: map 1 on jb4 is 13psi, map 2 is 14.5......

on the gauge it was reading more like 14.

either way, consistent 12 A/F's at 15.5psi on the Cobb is more comfortable to me than high 13 A/F's at 14psi from JB4.

p.s.
i didn't try MAP2 because Terry said "MAP2 is too agressive for some cars".

i wasn't about to risk it.

[Wohsho]

updated 301 agressive cobb map, dinan exhaust e92 center section:

[AU335i]

is there a huge difference in what you'll see on the dyno with these cars between 3rd gear and 4th gear pulls?

[WTH]

Evolve Stage 1 everything else is bone stock

[bigdnno98]

Dyno'd in Nashville, TN today. Cobb Stage 1 + FMIC + DCI

[grkm3]

some of you guys are making v8 torque with that little 3.0 tt.IM thinking about getting back into a bimmer.

[rbsileighty]

All files are 93 octane. Both "runfile" pulls are baseline numbers w/ the same exhaust but without the Cobb. The dyno equip was having issues with it's climate box which is why I posted both uncorrected and corrected.

[san6279]

Here are some numbers from today. Unfortunately, no graphs.

Dinan CAI
Dinan FMIC
AR Catted DP's
JB4
CM Meth Kit
50/50 Mix
60 Deg
Mustang Dyno
92 Octane
Map 3/ 30 additive
Run 1: 371 hp (5600 rpm), 429 Tq (3750 rpm)
Run 2: 365 hp (5600 rpm), 440 Tq (3800 rpm)

(I don't see correction info on the printout, and forgot to ask.)

[goproair]

Nice numbers . . . Looking to dyno once I'm done with the mods.

[kanecvl]

Where are the GIAC dyno's?? Wow. We need some more variety.

[san6279]

Originally Posted by goproair

Nice numbers . . . Looking to dyno once I'm done with the mods.

Had Terry review my logs and apparently had some issues during the run. Overshot boost, meth turned off, and it switched to map 0. Going to do some logging on the road as he stated the dyno could be causing some issues. Once I can do that may head back to a Dynojet and see what the numbers look like...just for kicks.

[mose121]

Originally Posted by Alpine Whiteboy

I think Dinan shows what their numbers are on race fuel. thats why your numbers are so far off. I could be wrong but i swear i've read that somewhere...

Dinan uses 93 octane in all of their dyno tests. No idea where you got that info on race fuel from. You can find out more information than anyone needs to ever know about dyno testing and how Dinan does it at http://www.dinancars.com/university/ and then click on the "Dynamometer Testing and The Modern BMW Engine" link. They use a chassis dyno that bolts directly to the wheel hub to get the most accurate dyno numbers possible. There's no better way to measure it accurately. They also use fans that flow 38,000 cfm of air flow @ 75 MPH. That's a lot of air. The fans are normally used in high rise ventilation systems. Go to 4:15 seconds in this video and see what I mean... http://www.youtube.com/watch?v=FM0XrRR3EzU

Originally Posted by My2Cents

Not sure if there is a way to check. BMW just flashed my computer due to the HPFP recall. I will be going in to get Dinan software re-flashed. I will talk to them about my dyno results and make sure they flash stage 2 software. I might dyno my car again afterwards just to see if that was maybe the issue.

It's extremely possible that your HPFP/injectors/DME OEM software/Low pressure fuel sensor was faulty/failing and contributed to your low #'s. I'm assuming your car has the required factory oil cooler for the stage II Dinan tune? Not all N54's have them, just in case you/your dealer hadn't noticed that yet.

[BEAR-AvHistory]

Quick dyno run pure stock 335IS JB4 map 2 93 octane

[RnmEvo9]

My 2008 135i made 392whp/398wtq on a dynojet with just JB4, Raceland downpipes, and Helix FMIC.