Newly Installed: Akra Slip-on / RPi Race X-pipe Combo (Pics & Vid) >>>

dj_dub · 10-14-2013, 01:06 AM

(VIDEO AT THE BOTTOM OF THIS POST!!!)

I finally decided to get a new exhaust and x-pipe combo on the M3. After months of research I originally decided on the Akra Slip-on / Mastermind Race X-pipe combo. After talking with EAS, they couldn't get the Mastermind Race X-pipe in the timeframe I gave them, so I opted for the RPi X-pipe which is pretty much the same: Catless and no Resonators. I couldn't be happier with the final outcome in terms of power and sound!!

Quality is great on both the Akra and RPi. Nice deep sound with just enough raspiness. Best part is there is no drone inside the car while cruising on the freeway!

The Car:

IMG_2076a by dj_dub, on Flickr

IMG_2059 by dj_dub, on Flickr

IMG_2134 by dj_dub, on Flickr

The Whole Exhaust Setup Installed:

IMG_2433 by dj_dub, on Flickr

IMG_2434 by dj_dub, on Flickr

Dyno Pics:

IMG_2450 by dj_dub, on Flickr

IMG_2452 by dj_dub, on Flickr

Final Dyno Sheet:

Baseline: 365.90hp 267.22ft-lbs - BMC Filter
After Installed Mods: 384.54hp 276.46ft-lbs - BMC Filter, ESS Tune, Akra Slip-on, RPi X-pipe, Macht Schnell UDP

IMG_2453 by dj_dub, on Flickr

Video - Day After Install: (HD if you click the link)

Big Thanks to Kevin, Tom and the Techs @ EAS for the great work!!

CPWINCH · 10-15-2013, 12:36 AM

rasp city. Need a resonator in there. Car looks great tho

dj_dub · 10-15-2013, 12:55 PM

Quote:

Originally Posted by CPWINCH

rasp city. Need a resonator in there. Car looks great tho

Haha Thanks man! ...the video seems to make it more raspy than it is in person, it's not that bad.

UBER ///M3 · 10-15-2013, 12:59 PM

Super clean E90 brother! Akrapovic FTW!!!

lsmkr01 · 10-15-2013, 01:05 PM

Maybe its overly raspy because its cold. I'd like to here your thoughts after a hard run where the whole car is warm 210 or above. Car looks great btw

dereksM3 · 10-15-2013, 03:02 PM

New numbers seem a bit low or old number a bit high...19hp going to full catless exhaust, tune and pullies? Most gain 30-40whp with those added mods.

dj_dub · 10-15-2013, 03:29 PM

Quote:

Originally Posted by lsmkr01

Maybe its overly raspy because its cold. I'd like to here your thoughts after a hard run where the whole car is warm 210 or above. Car looks great btw

Thanks man, I appreciate it! Definitely overly raspy when it's cold and warming up. When car is up to temp, you'll only hear rasp when I punch it (even then, it's not that bad when you hear it in person). Other than that, it's a pretty deep tone at low rpms, and pretty quiet while cruising. No drone at all at freeway speeds.

Quote:

Originally Posted by dereksM3

New numbers seem a bit low or old number a bit high...19hp going to full catless exhaust, tune and pullies? Most gain 30-40whp with those added mods.

Those were my thoughts initially as well. I know my car still needs to adapt because of the new ESS Tune. Hopefully I'll be able to squeeze out a few more hp's as I drive my car more. I think my baseline is pretty high...my target hp was 380-390hp after mods. I got right in the middle of it so I'm pretty stoked.

Talk2meg00se · 10-15-2013, 04:05 PM

these were your near-stock dyno numbers?

"Baseline: 365.90hp 267.22ft-lbs - BMC Filter"

My numbers: (mods in sig) 369.15 max power, 268.69 max torque

mine put out near identical numbers on the same EAS dyno. seems to confirm that the bolt-ons / tunes don't do a whole lot.

dj_dub · 10-16-2013, 11:32 AM

Quote:

Originally Posted by Talk2meg00se

these were your near-stock dyno numbers?

"Baseline: 365.90hp 267.22ft-lbs - BMC Filter"

My numbers: (mods in sig) 369.15 max power, 268.69 max torque

mine put out near identical numbers on the same EAS dyno. seems to confirm that the bolt-ons / tunes don't do a whole lot.

Haha Yeah, 365.90 was my baseline with just a BMC Filter. I'm still happy in the end though...I'm in the hp range I was hoping for.

I'll dyno again later this winter to see after my car has adapted if I can squeeze out a few more hp's.

Talk2meg00se · 10-16-2013, 10:27 PM

Quote:

Originally Posted by dj_dub

Haha Yeah, 365.90 was my baseline with just a BMC Filter. I'm still happy in the end though...I'm in the hp range I was hoping for.

I'll dyno again later this winter to see after my car has adapted if I can squeeze out a few more hp's.

that's a great baseline. my understanding is that typical "stock" baseline is 350 something. but who really knows. it's hard to pick out fact from fiction in the aftermarket tuner world.

10-14-2013, 01:06 AM	#1
dj_dub IG: @dj_dub 1870 Rep 1,454 Posts Drives: 2010 BMW E90 M3 - SG/FR 6MT Join Date: Jan 2013 Location: SF Bay Area to Las Vegas iTrader: (4) Garage List 2023 Sequoia TRD Pro [0.00] 2017 Porsche 991.2 C2S [0.00] 2006 BMW E46 M3 Vert [0.00] 2010 BMW E90 M3 [6.00]	Newly Installed: Akra Slip-on / RPi Race X-pipe Combo (Pics & Vid) >>> (VIDEO AT THE BOTTOM OF THIS POST!!!) I finally decided to get a new exhaust and x-pipe combo on the M3. After months of research I originally decided on the Akra Slip-on / Mastermind Race X-pipe combo. After talking with EAS, they couldn't get the Mastermind Race X-pipe in the timeframe I gave them, so I opted for the RPi X-pipe which is pretty much the same: Catless and no Resonators. I couldn't be happier with the final outcome in terms of power and sound!! Quality is great on both the Akra and RPi. Nice deep sound with just enough raspiness. Best part is there is no drone inside the car while cruising on the freeway! The Car: IMG_2076a by dj_dub, on Flickr IMG_2059 by dj_dub, on Flickr IMG_2134 by dj_dub, on Flickr The Whole Exhaust Setup Installed: IMG_2433 by dj_dub, on Flickr IMG_2434 by dj_dub, on Flickr Dyno Pics: IMG_2450 by dj_dub, on Flickr IMG_2452 by dj_dub, on Flickr Final Dyno Sheet: Baseline: 365.90hp 267.22ft-lbs - BMC Filter After Installed Mods: 384.54hp 276.46ft-lbs - BMC Filter, ESS Tune, Akra Slip-on, RPi X-pipe, Macht Schnell UDP IMG_2453 by dj_dub, on Flickr Video - Day After Install: (HD if you click the link) Big Thanks to Kevin, Tom and the Techs @ EAS for the great work!! __________________ CarboProject CF Plenum \| Dinan CF Intake \| ESS Tune \| RKP X-Pipe \| Akra w/CF Tips \| MFactory CF DS \| CSF Cooling \| AST 5200 \| Hotchkis F/R Sways \| SPL/Ground Control/Fall-Line Arms \| DEFIV Diff Brace \| StudioRSR Rollcage \| 3-piece BBS RT88 \| Michelin PS4S \| Brembos F/R \| Recaro Profi SPG XL \| CAE Ultra Shifter \| OMP/Ridgeline Wheel \| BAVSOUND \| GT4 CF Front Lip/Canards/Rear Wing \| Arkym CF Rear Diffuser \| Forcewerkz CF SS \| Varis CF Lower Tray \| Turner Skidplate \| BayOptiks Headlights Last edited by dj_dub; 10-14-2013 at 01:43 AM..
	Appreciate 0 Tweet Quote

10-15-2013, 12:36 AM	#2
CPWINCH Brigadier General 774 Rep 4,639 Posts Drives: Toyota Prius Join Date: May 2010 Location: Los Angeles iTrader: (7)	rasp city. Need a resonator in there. Car looks great tho __________________ Follow my BMW instagram @CARMODIFICATION Let me know you are from bimmerpost and i'll follow back
	Appreciate 0 Quote

10-15-2013, 12:59 PM	#4
UBER ///M3 Nüburgring Nordschleife BTG 8:05 70 Rep 826 Posts Drives: 2012 LEMANS BLUE E92 ZCP M3 Join Date: Jun 2012 Location: Ezelsdorf, Germany iTrader: (0)	Super clean E90 brother! Akrapovic FTW!!! __________________ ESS V2 Tune, ACM Test Pipes, AA Green Filter,Custom painted Recaro Pole Positions, Akrapovic slip on, Stoptech ST60/ Pagid pads, KW Clubsports, APEX ARC8s/Pilot Sport Cups, Hamann carbon fiber hood, ONEighty Headlight mod (selfmade), CRT lip with splitters, Blacked out/paint matched emblems, black aluminum extended paddles and pedals
	Appreciate 0 Quote

10-15-2013, 01:05 PM	#5
lsmkr01 Lieutenant Colonel 50 Rep 1,627 Posts Drives: E92 M3 Join Date: Feb 2007 Location: SC iTrader: (0)	Maybe its overly raspy because its cold. I'd like to here your thoughts after a hard run where the whole car is warm 210 or above. Car looks great btw
	Appreciate 0 Quote

10-15-2013, 03:02 PM	#6
dereksM3 Captain 273 Rep 886 Posts Drives: 2016 MG 340i M-Sport Join Date: Mar 2009 Location: Lynnwood, WA iTrader: (3)	New numbers seem a bit low or old number a bit high...19hp going to full catless exhaust, tune and pullies? Most gain 30-40whp with those added mods.
	Appreciate 0 Quote

10-15-2013, 04:05 PM	#8
Talk2meg00se Captain 130 Rep 660 Posts Drives: 2013 E92 M3 Join Date: Aug 2010 Location: Los Angeles iTrader: (0)	these were your near-stock dyno numbers? "Baseline: 365.90hp 267.22ft-lbs - BMC Filter" My numbers: (mods in sig) 369.15 max power, 268.69 max torque mine put out near identical numbers on the same EAS dyno. seems to confirm that the bolt-ons / tunes don't do a whole lot. __________________ TiAg \| ZCP \| DCT \| Euro MDM \| aFe filter \| MS Pulley \| Akra Slip-on \| MS Spacers \| 255/275 M4S \| H8 180s
	Appreciate 0 Quote