Complete N55 tuning

yitbos1 · 09-13-2010, 07:19 AM

Quote:

Originally Posted by cstavaru

There is such a big dip in torque on the stock N55 until 4500RPM that I find it hard to believe it feels better than the N54.

Not according to this.

shockin330i · 09-13-2010, 11:02 AM

Nice numbers

Sniz · 09-13-2010, 11:17 AM

Quote:

Originally Posted by cstavaru

There is such a big dip in torque on the stock N55 until 4500RPM that I find it hard to believe it feels better than the N54.

OpenFlash · 09-13-2010, 11:35 AM

Quote:

Originally Posted by cstavaru

There is such a big dip in torque on the stock N55 until 4500RPM that I find it hard to believe it feels better than the N54.

That's just caused by an integral correction wind-up issue from loading up the car at such a low rpm, high gear. Really only seen on a high mass inertia dyno set up. It causes a ~1psi overboost which causes a throttle closure. You rarely see this condition on the road. But yes, we eliminate this issue with the Procede.

cstavaru · 09-13-2010, 04:55 PM

Quote:

Originally Posted by yitbos1

Not according to this.

Well, in that dyno comparison the N55 torque looks straight but has 11-15hp less than the N54...

Ilma · 09-13-2010, 06:08 PM

Quote:

Originally Posted by cstavaru

Well, in that dyno comparison the N55 torque looks straight but has 11-15hp less than the N54...

Are you sure about that?

scottp999 · 09-13-2010, 06:18 PM

Very nice work Shiv! Congrats! Do you think the same procede hardware will port over to the n63 eventually? I can see picking up a used 550 in a couple of years.

cstavaru · 09-13-2010, 06:19 PM

Quote:

Originally Posted by Ilma

Are you sure about that?

Why don't you just look at the graphs ?

Doug007 · 09-13-2010, 08:08 PM

Quote:

Originally Posted by shiv@vishnu

That's just caused by an integral correction wind-up issue from loading up the car at such a low rpm, high gear. Really only seen on a high mass inertia dyno set up. It causes a ~1psi overboost which causes a throttle closure. You rarely see this condition on the road. But yes, we eliminate this issue with the Procede.

Integral wind-up is a bitch

Good thing you fixed it or N55 pikes peak runs might have been affected!

I actually know exactly what you're talking about but it's amusing to me to see such a deep technical detail

rKi · 09-13-2010, 09:28 PM

so much torque <3

datbimmerdoe · 09-14-2010, 01:41 AM

good info.

keep up the good work.

MikeDNJBMW · 09-14-2010, 05:25 AM

hey Shiv, what would you say a stock 4 door will put down???

MikeDNJBMW · 09-14-2010, 05:10 PM

also who is making a high flow cat???!!!!!!!!!?????????

shockin330i · 09-14-2010, 05:12 PM

Quote:

Originally Posted by njlakeshoreg

also who is making a high flow cat???!!!!!!!!!?????????

camber toe is working on one i believe and so is ar. Your xi has cats/res on the mid pipes with the 335i has none, only one on the downpipe.

TreDirtyFive · 09-14-2010, 05:39 PM

stick on a 200 cell HJS cat!

MikeDNJBMW · 09-14-2010, 06:16 PM

Quote:

Originally Posted by shockin330i

camber toe is working on one i believe and so is ar. Your xi has cats/res on the mid pipes with the 335i has none, only one on the downpipe.

ahh say whaaa???? no good!!! time to start cuttin ish apart!!! lmao

adrianBMW99 · 09-14-2010, 09:07 PM

Hey Shiv,

How does the top end on a vehicle with this tune feel? Let's say 100-150 MPH acceleration? From my experience, the N55 runs out of steam around 125, the pull after that is rather interminable on the stock tune.

Thanks

MikeDNJBMW · 09-14-2010, 10:00 PM

Quote:

Originally Posted by maxnix

Same as a stock two door?

hahaha good catch!!!

freekin awd lol duhhhhh

shockin330i · 09-14-2010, 11:19 PM

Quote:

Originally Posted by njlakeshoreg

ahh say whaaa???? no good!!! time to start cuttin ish apart!!! lmao

lol yeah Don't know why the xi has cats/res and the regular 335i's dont...

Quote:

Originally Posted by adrianBMW99

Hey Shiv,

How does the top end on a vehicle with this tune feel? Let's say 100-150 MPH acceleration? From my experience, the N55 runs out of steam around 125, the pull after that is rather interminable on the stock tune.

Thanks

Really? I've pegged my n55 and shifting from 4th to 5th feels great... the car just want's to keep pulling. I can only imagine how it feels with a tune...

MikeDNJBMW · 09-15-2010, 06:04 AM

Quote:

Originally Posted by shockin330i

lol yeah Don't know why the xi has cats/res and the regular 335i's dont...

Really? I've pegged my n55 and shifting from 4th to 5th feels great... the car just want's to keep pulling. I can only imagine how it feels with a tune...

what a damn drag...i didnt want to put a whole new exhaust on, just put a new hfc on, i guess i will be doing a cool setup now :0)

adrianBMW99 · 09-15-2010, 07:03 AM

Quote:

Originally Posted by shockin330i

Really? I've pegged my n55 and shifting from 4th to 5th feels great... the car just want's to keep pulling. I can only imagine how it feels with a tune...

Really? I certainly hope you have quite a bit of distance to spare for this to happen... Crossing 130, it takes the car a while to gain speed.

You sir, have clearly never driven a well tuned and bolted evo, supra, Z06, or M5 for that matter!

shockin330i · 09-24-2010, 11:58 AM

Quote:

Originally Posted by adrianBMW99

Really? I certainly hope you have quite a bit of distance to spare for this to happen... Crossing 130, it takes the car a while to gain speed.

You sir, have clearly never driven a well tuned and bolted evo, supra, Z06, or M5 for that matter!

Well no wonder you feel like it ran out of steam. Look what you are comparing it to lol

09-13-2010, 11:02 AM	#24
shockin330i Brigadier General 798 Rep 4,784 Posts Drives: 2016 ZCP M3 Join Date: Jan 2007 Location: f y'all, I'm from Texas (RGV) iTrader: (1)	Nice numbers __________________ ERnie 2016 BSM/f80/ZCP
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09-13-2010, 06:18 PM	#29
scottp999 Brigadier General 133 Rep 4,764 Posts Drives: 4runner SR5 Join Date: Mar 2007 Location: MD iTrader: (2) Garage List 2007 BMW 335 [9.00]	Very nice work Shiv! Congrats! Do you think the same procede hardware will port over to the n63 eventually? I can see picking up a used 550 in a couple of years.
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09-13-2010, 09:28 PM	#32
rKi zergling! 3 Rep 96 Posts Drives: 11 E92 335i Join Date: Jul 2010 Location: Taiwan iTrader: (0)	so much torque <3
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09-14-2010, 01:41 AM	#33
datbimmerdoe Lieutenant General 1271 Rep 17,493 Posts Drives: like I'M BOUT THAT LIFE Join Date: Jul 2008 Location: PARADISE aka CANES COUNTRY iTrader: (0)	good info. keep up the good work. __________________ #datbimmerdoe #thatbimmertho FOLLOW @datbimmerdoe on INSTAGRAM
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09-14-2010, 05:25 AM	#34
MikeDNJBMW Lieutenant 16 Rep 420 Posts Drives: 2011 e90 335 ix, 08 335i e92 6 Join Date: Sep 2010 Location: bergen county, nj iTrader: (6) Garage List 2012 bmw x5d [0.00]	hey Shiv, what would you say a stock 4 door will put down???
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09-14-2010, 05:10 PM	#35
MikeDNJBMW Lieutenant 16 Rep 420 Posts Drives: 2011 e90 335 ix, 08 335i e92 6 Join Date: Sep 2010 Location: bergen county, nj iTrader: (6) Garage List 2012 bmw x5d [0.00]	also who is making a high flow cat???!!!!!!!!!?????????
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09-14-2010, 05:39 PM	#37
TreDirtyFive Major 253 Rep 1,334 Posts Drives: X3 M40i Join Date: Jun 2008 Location: Los Angeles, CA iTrader: (11)	stick on a 200 cell HJS cat! __________________ X3 M40i G01, M235i F22, 335 F30 MSport, 135 DCT, 335 E92, Audi A3
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09-14-2010, 09:07 PM	#39
adrianBMW99 First Lieutenant 90 Rep 328 Posts Drives: BMW Join Date: Aug 2010 Location: FL iTrader: (0)	Hey Shiv, How does the top end on a vehicle with this tune feel? Let's say 100-150 MPH acceleration? From my experience, the N55 runs out of steam around 125, the pull after that is rather interminable on the stock tune. Thanks
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