Some 335i engine tidbits from the Vishnu nerds

OpenFlash · 09-13-2006, 01:50 AM

Hi guys,
Spent a good portion of the day digging inside the engine bay. A few things of interest.

1) The car doesn't have a MAF sensor. Instead it calculates load from 2 MAP sensors. One a few inches upstream of the throttle body and one in the intake manifold. The former actually being a T-MAP sensor (a MAP sensor which incorporates a temp sensor in one sensor body). Pretty neat stuff. I've read about this but have yet to see it any car first-hand.

2) Fuel rail pressure varies as a function of engine load. It can go as low as a few hundred psi to as high as 3000psi!

3) The crank trigger is still a 60-2 toothed wheel. They did not change over to the asymetric trigger configuration that is becoming popular lately for their multiple reference points (a plus when it comes to misfire diagnostics.)

More to come...

Shiv
Vishnu Performance Systems

BiggieJ · 09-13-2006, 02:42 AM

shiv, man we need more guys like you here. i can tell your knowledge is going to greatly benefit out forums here. keep up the great work

PS- i have no idea what you just said but it sounds like knowledge

lawdude · 09-13-2006, 03:41 AM

Whoa, great stuff. Not that I understand it, but still . . .

fibercus · 09-13-2006, 05:14 AM

my only experience with MAP sensors was when converting to individual throttle bodies - . Saw them often on corolla's with individuals + MAP sensor.

Very interesting to see them on the 335i. Your input on any matter of the engine bay would be greatly appreciated here - i am sure of it. =)

thanks!

gscone · 09-13-2006, 07:26 AM

Another fellow desi doing it big. Any plans for a chip?

noro · 09-13-2006, 10:16 AM

So how do they modulate the fuel pressure? Using a vacum hose to change the pressure regulator setting?

Hammerfang · 09-13-2006, 11:05 AM

this might sound like a really dumb question, but does the 335 have an intercooler? cause i remember looking at pics of the engine on the BMW NA website and i did not see one

Griff330Ci · 09-13-2006, 11:37 AM

I heard it alos has a hydraulic flux capacitor. Is this true?

JackMac · 09-13-2006, 11:52 AM

Shiv,

Didn't realize you were also on the E90 forum. I cross-posted some of your findings earlier this week in this thread:

http://www.e90post.com/forums/showthread.php?t=29711

Here is Shiv's whp dyno data from an E92 335:

jmonier · 09-13-2006, 12:42 PM

Quote:

Originally Posted by Hammerfang

this might sound like a really dumb question, but does the 335 have an intercooler? cause i remember looking at pics of the engine on the BMW NA website and i did not see one

Yes it does. There are engine pictures that show it although I don't have a url.

Jason · 09-13-2006, 12:44 PM

Quote:

Originally Posted by jmonier

Yes it does. There are engine pictures that show it although I don't have a url.

Detailed pics of 335i engine - http://www.e90post.com/forums/showthread.php?t=24495

OpenFlash · 09-14-2006, 03:50 PM

Quote:

Originally Posted by JackMac

Shiv,

Didn't realize you were also on the E90 forum. I cross-posted some of your findings earlier this week in this thread:

http://www.e90post.com/forums/showthread.php?t=29711

Here is Shiv's whp dyno data from an E92 335:

Those dyno results are a bit outdated as of this morning

-shiv

crex · 09-14-2006, 04:00 PM

give us the new ones!!!

dArNeLLi · 09-14-2006, 10:19 PM

hey shiv, where in sf do you guys work on the 335? i got a ED pickup first week of october, and curious to see more of the vehicle before i go

OpenFlash · 09-14-2006, 11:48 PM

Quote:

Originally Posted by crex

give us the new ones!!!

okay...
http://www.e90post.com/forums/showthread.php?t=30027

OpenFlash · 09-14-2006, 11:50 PM

Quote:

Originally Posted by dArNeLLi

hey shiv, where in sf do you guys work on the 335? i got a ED pickup first week of october, and curious to see more of the vehicle before i go

The BMW work that we do isn't offical Vishnu business. It's just what i'm doing on the side. As such, I'm doing all the computer work it in my garage in Blackhawk. And all the test driving on 680 and Calaveras Canyon Rd

dArNeLLi · 09-18-2006, 03:51 PM

ooh nice, where is calaveras canyon road, is that near dumbarton? i'm from san francisco and i work right off of 880, i'd like to check out what your doin if you'd let

AHY · 09-18-2006, 04:02 PM

Darnelli: East of Dumbarton, more like San Ramon/East bay. Lots of nice roads to test on....

Stealth335i · 09-19-2006, 11:14 PM

Quote:

Originally Posted by shiv@vishnu

1) The car doesn't have a MAF sensor. Instead it calculates load from 2 MAP sensors. One a few inches upstream of the throttle body and one in the intake manifold. The former actually being a T-MAP sensor (a MAP sensor which incorporates a temp sensor in one sensor body). Pretty neat stuff. I've read about this but have yet to see it any car first-hand.

Shiv
Vishnu Performance Systems

Shiv,
I was looking at that myself when I went to test drive the car, but I didn't see the one in the intake manifold, which is what threw me off. Good thing is that its not a MAF, it would give just a bit more headaches. With the two map sensors, can the former be compared to an AIT sensor? Such as the typical AEM setup, 3/5 GM map sensor and GM AIT sensor. Also with the direct injection and the larger scale in fuel pressure, is there any need for fuel upgrades (injectors, fuel pumps, fuel rail, fpr)?
Thanks.

ahnh77 · 09-19-2006, 11:20 PM

damn..i'm headed out to blackhawk this weekend...love to check out the ride...can i get a peek??

Quote:

Originally Posted by shiv@vishnu

The BMW work that we do isn't offical Vishnu business. It's just what i'm doing on the side. As such, I'm doing all the computer work it in my garage in Blackhawk. And all the test driving on 680 and Calaveras Canyon Rd

SamK · 09-19-2006, 11:22 PM

glad someone's playing with it, cause I'm ready to mod the shit out of it. it's fun and its fast.

txusa03 · 09-20-2006, 08:50 AM

Quote:

Originally Posted by shiv@vishnu

Hi guys,
Spent a good portion of the day digging inside the engine bay. A few things of interest.

1) The car doesn't have a MAF sensor. Instead it calculates load from 2 MAP sensors. One a few inches upstream of the throttle body and one in the intake manifold. The former actually being a T-MAP sensor (a MAP sensor which incorporates a temp sensor in one sensor body). Pretty neat stuff. I've read about this but have yet to see it any car first-hand.

2) Fuel rail pressure varies as a function of engine load. It can go as low as a few hundred psi to as high as 3000psi!

3) The crank trigger is still a 60-2 toothed wheel. They did not change over to the asymetric trigger configuration that is becoming popular lately for their multiple reference points (a plus when it comes to misfire diagnostics.)

More to come...

Shiv
Vishnu Performance Systems

Even tho I don't understand what you wrote but can you show me how I can do this type of dignosis to my e90330?

09-13-2006, 01:50 AM	#1
OpenFlash 1750 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Some 335i engine tidbits from the Vishnu nerds Hi guys, Spent a good portion of the day digging inside the engine bay. A few things of interest. 1) The car doesn't have a MAF sensor. Instead it calculates load from 2 MAP sensors. One a few inches upstream of the throttle body and one in the intake manifold. The former actually being a T-MAP sensor (a MAP sensor which incorporates a temp sensor in one sensor body). Pretty neat stuff. I've read about this but have yet to see it any car first-hand. 2) Fuel rail pressure varies as a function of engine load. It can go as low as a few hundred psi to as high as 3000psi! 3) The crank trigger is still a 60-2 toothed wheel. They did not change over to the asymetric trigger configuration that is becoming popular lately for their multiple reference points (a plus when it comes to misfire diagnostics.) More to come... Shiv Vishnu Performance Systems
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09-13-2006, 02:42 AM	#2
BiggieJ Second Lieutenant 62 Rep 239 Posts Drives: e92 335 ZSPZPPOPP Join Date: Nov 2005 Location: SoCal iTrader: (0)	shiv, man we need more guys like you here. i can tell your knowledge is going to greatly benefit out forums here. keep up the great work PS- i have no idea what you just said but it sounds like knowledge
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09-13-2006, 03:41 AM	#3
lawdude Colonel 94 Rep 2,339 Posts Drives: 335i ZPP ZSP TiAg MT Join Date: Jul 2006 Location: Georgia iTrader: (1)	Whoa, great stuff. Not that I understand it, but still . . .
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09-13-2006, 05:14 AM	#4
fibercus Captain 35 Rep 830 Posts Drives: E92 M3 Join Date: Mar 2006 Location: US iTrader: (4)	my only experience with MAP sensors was when converting to individual throttle bodies - . Saw them often on corolla's with individuals + MAP sensor. Very interesting to see them on the 335i. Your input on any matter of the engine bay would be greatly appreciated here - i am sure of it. =) thanks!
	Appreciate 0 Quote

09-13-2006, 07:26 AM	#5
gscone First Lieutenant 23 Rep 349 Posts Drives: 2016 Porsche Turbo, 2017 BMW M Join Date: Mar 2006 Location: NJ iTrader: (0)	Another fellow desi doing it big. Any plans for a chip? __________________ Too many damn cars..
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09-13-2006, 10:16 AM	#6
noro Colonel 90 Rep 2,707 Posts Drives: '91 M3, '04 E46 ZHP, '72 2002 Join Date: Aug 2006 Location: Boston iTrader: (0)	So how do they modulate the fuel pressure? Using a vacum hose to change the pressure regulator setting?
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09-13-2006, 11:05 AM	#7
Hammerfang Private First Class 15 Rep 159 Posts Drives: 2017 F31 330i M-sport Join Date: Apr 2006 Location: NJ iTrader: (0)	this might sound like a really dumb question, but does the 335 have an intercooler? cause i remember looking at pics of the engine on the BMW NA website and i did not see one
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09-13-2006, 11:37 AM	#8
Griff330Ci New Member 0 Rep 22 Posts Drives: '01 330Ci Join Date: Jul 2006 Location: Phoenix iTrader: (0)	I heard it alos has a hydraulic flux capacitor. Is this true?
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09-13-2006, 11:52 AM	#9
JackMac Recovering BMW Addict 151 Rep 1,914 Posts Drives: <OO (\|\|\|)(\|\|\|) OO> Join Date: Nov 2005 Location: Southeast PA iTrader: (7) Garage List 2010 MINI John Coop ... [9.66]	Shiv, Didn't realize you were also on the E90 forum. I cross-posted some of your findings earlier this week in this thread: http://www.e90post.com/forums/showthread.php?t=29711 Here is Shiv's whp dyno data from an E92 335:
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09-14-2006, 04:00 PM	#13
crex Captain 53 Rep 659 Posts Drives: bmw 135i, Jeep wrangler Join Date: Nov 2005 Location: NOVA iTrader: (1)	give us the new ones!!!
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09-14-2006, 10:19 PM	#14
dArNeLLi Lieutenant 76 Rep 579 Posts Drives: 335i on ED, pickup 10/6 Join Date: Sep 2006 Location: San Francisco iTrader: (2)	hey shiv, where in sf do you guys work on the 335? i got a ED pickup first week of october, and curious to see more of the vehicle before i go
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09-18-2006, 03:51 PM	#17
dArNeLLi Lieutenant 76 Rep 579 Posts Drives: 335i on ED, pickup 10/6 Join Date: Sep 2006 Location: San Francisco iTrader: (2)	ooh nice, where is calaveras canyon road, is that near dumbarton? i'm from san francisco and i work right off of 880, i'd like to check out what your doin if you'd let
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09-18-2006, 04:02 PM	#18
AHY First Lieutenant 12 Rep 333 Posts Drives: e92 335i, e70 3.0 m-sport Join Date: Aug 2006 Location: N. California, East Bay iTrader: (5)	Darnelli: East of Dumbarton, more like San Ramon/East bay. Lots of nice roads to test on....
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09-19-2006, 11:22 PM	#21
SamK New Member 0 Rep 25 Posts Drives: '03 Jetta n '07 335i coupe Join Date: Sep 2006 Location: Fayetteville, Arkansas iTrader: (0)	glad someone's playing with it, cause I'm ready to mod the shit out of it. it's fun and its fast.
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