What am I missing?

Nordkeyz73 · 04-09-2015, 10:59 AM

I'm wondering if your local BMW CCA chapter can direct you to a former master mechanic from a dealership. One with ECU experience.

thomas88162 · 04-09-2015, 12:50 PM

Quote:

Originally Posted by TheAxiom

I'm at work now, so more diagnostics until I get off, but it wouldn't surprise me if it came over oiled.

They often do, sadly. I've seen the bottom of boxes absolutely soaked just from the oil dripping off of the element.. from a filter on the shelves. For this reason, I use paper elements.

Taskmaster · 04-09-2015, 02:00 PM

I have a back up MAF and some cleaner. I'll clean this one, reset everything and go from there.

Tom Droze · 04-09-2015, 02:51 PM

Quote:

Originally Posted by TheAxiom

I have a back up MAF and some cleaner. I'll clean this one, reset everything and go from there.

Cleaning the MAF often times does not work, so if the problem continues after the cleaning, please don't assume your MAF isn't at fault.

thomas88162 · 04-09-2015, 04:13 PM

INPA provides a lovely graph with bounds for regular values of a MAF... It isn't difficult to read or record this graph while you let the engine go through some driving conditions. From there, you can easily determine if your MAF is wonky or not...

TheSt|G · 04-10-2015, 11:30 AM

Quote:

Originally Posted by thomas88162

They often do, sadly. I've seen the bottom of boxes absolutely soaked just from the oil dripping off of the element.. from a filter on the shelves. For this reason, I use paper elements.

Pretty much why I never use oiled filters or K&N products.

Taskmaster · 04-11-2015, 12:55 PM

Ran a Q50 from a roll in second, and started to pull....then I hit 3rd gear and he got a car and a half and held it.

bimmerquick43321 · 04-11-2015, 01:13 PM

Quote:

Originally Posted by TheAxiom

Ran a Q50 from a roll in second, and started to pull....then I hit 3rd gear and he got a car and a half and held it.

That's not bad, did you get a chance to see which Q50 model it was?, as weight for the base is 3575 which isn't bad at all for ~328hp, however it can go up to 3850 for the awd S model which is getting pretty heavy for the power... also with our cars you need to shift almost before the rev limiter and shift really fast so you won t lose momentum and fall high enough in the rpms in the next gear

Also one thing I noticed when racing, our engine response and power is pretty instant compared to most cars out there, I feel like when I push the accelerator my car just goes, compared to others where it feels like they re engine is waking up slowly.... (not talking about turbo cars only..)

Mavus · 04-11-2015, 01:30 PM

Quote:

Originally Posted by TheAxiom

Ran a Q50 from a roll in second, and started to pull....then I hit 3rd gear and he got a car and a half and held it.

headers + gearing (+lsd) is a great mod

Taskmaster · 04-11-2015, 01:51 PM

Quote:

Originally Posted by mecbain

That's not bad, did you get a chance to see which Q50 model it was?, as weight for the base is 3575 which isn't bad at all for ~328hp, however it can go up to 3850 for the awd S model which is getting pretty heavy for the power... also with our cars you need to shift almost before the rev limiter and shift really fast so you won t lose momentum and fall high enough in the rpms in the next gear

Also one thing I noticed when racing, our engine response and power is pretty instant compared to most cars out there, I feel like when I push the accelerator my car just goes, compared to others where it feels like they re engine is waking up slowly.... (not talking about turbo cars only..)

I don't think it was AWD, no one really does that here in FL. But for me, I thought I had it, and shifted to 3rd gear - it felt like I fell flat on my face.

Currently cleaning MAF and I'm going to run some diagnostic test.

Mike. · 04-11-2015, 04:10 PM

Quote:

Originally Posted by TheAxiom

Quote:

Originally Posted by mecbain

That's not bad, did you get a chance to see which Q50 model it was?, as weight for the base is 3575 which isn't bad at all for ~328hp, however it can go up to 3850 for the awd S model which is getting pretty heavy for the power... also with our cars you need to shift almost before the rev limiter and shift really fast so you won t lose momentum and fall high enough in the rpms in the next gear

Also one thing I noticed when racing, our engine response and power is pretty instant compared to most cars out there, I feel like when I push the accelerator my car just goes, compared to others where it feels like they re engine is waking up slowly.... (not talking about turbo cars only..)

I don't think it was AWD, no one really does that here in FL. But for me, I thought I had it, and shifted to 3rd gear - it felt like I fell flat on my face.

Currently cleaning MAF and I'm going to run some diagnostic test.

Tell him to come to long island, I'll gladly represent for the N52

Three_thirty_I · 04-13-2015, 05:53 PM

I feel your pain TheAxiom! Been battling with my car's pinging problem for ages, and this includes some definite dips in power delivery around low to mid revs. Below 2000 rpm there are some dips, along with the pinging, and then around 2500 rpm there are some stumbles, but at roughly 3000 rpm (sometimes 2800 or 3200 rpm) there is a distinct dip in power which is so annoying! I have done so much already trying to solve this, in the end it is just robbing me blind! And my car is 100% stock, so not an issue with a mod gone wrong or "fiddling" of any kind. So frustrating.

Taskmaster · 04-13-2015, 06:06 PM

Quote:

Originally Posted by Three_thirty_I

I feel your pain TheAxiom! Been battling with my car's pinging problem for ages, and this includes some definite dips in power delivery around low to mid revs. Below 2000 rpm there are some dips, along with the pinging, and then around 2500 rpm there are some stumbles, but at roughly 3000 rpm (sometimes 2800 or 3200 rpm) there is a distinct dip in power which is so annoying! I have done so much already trying to solve this, in the end it is just robbing me blind! And my car is 100% stock, so not an issue with a mod gone wrong or "fiddling" of any kind. So frustrating.

I STILL haven't figured out the stalling issue. I'm just so fed up.

Tom Droze · 04-13-2015, 06:49 PM

Quote:

Originally Posted by TheAxiom

I STILL haven't figured out the stalling issue. I'm just so fed up.

Did you replace your MAF?

Taskmaster · 04-14-2015, 09:45 AM

Quote:

Originally Posted by Tom Droze

Did you replace your MAF?

Nope, just cleaned this one. I'll do it this week for sure though.

Three_thirty_I · 04-14-2015, 07:54 PM

Try and see if you can swap the MAF out with a good one from another car and see. One of my more recent endeavours was to just replace the MAF with a new one, but made no difference - was a calculated gamble, sort of like buying this car. LOL

Taskmaster · 04-14-2015, 08:10 PM

Quote:

Originally Posted by Three_thirty_I

Try and see if you can swap the MAF out with a good one from another car and see. One of my more recent endeavours was to just replace the MAF with a new one, but made no difference - was a calculated gamble, sort of like buying this car. LOL

I will do that, I have just been driving after reset to adaptations. Torque feels better, stronger for sure - top end is fantastic.

Taskmaster · 04-17-2015, 09:34 PM

The car does feel a little flat at times, but for the most part it feels a lot better. I'm going to swap the MAF and see if that helps any more. So far I would put it at a 7/10 Most of the time, but when it's 10/10 it REALLY Scoots.

Tom Droze · 04-18-2015, 05:34 PM

Any updates here? What did you finally do to resolve your issue?

Taskmaster · 04-18-2015, 05:41 PM

Quote:

Originally Posted by Tom Droze

Any updates here? What did you finally do to resolve your issue?

No...not really. Here is what is funny. If I unhook the MAF, the car runs about the same, until higher RPMS, and then it doesn't feel as strong. The low end feels as good if not a little better. The car also doesn't stall at all.

So...I guess I'll try using my other MAF and/or buying a new one. I emailed OE about my most recent dyno, so let's see what they say.

04-09-2015, 10:59 AM	#23
Nordkeyz73 Lieutenant 166 Rep 571 Posts Drives: E90 328i ZSP, Macan Turbo Join Date: Jun 2013 Location: CT iTrader: (0)	I'm wondering if your local BMW CCA chapter can direct you to a former master mechanic from a dealership. One with ECU experience. __________________ BMW Performance SSK, BMW Performance Blackline Tails, BMW Performance Exhaust, BMW 3-Stage Intake Manifold, Evolve Automotive Tune, Weisslicht LED Halos, Black Kidneys, Digital Speedo
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04-09-2015, 02:00 PM	#25
Taskmaster Banned 2476 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	I have a back up MAF and some cleaner. I'll clean this one, reset everything and go from there.
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04-09-2015, 04:13 PM	#27
thomas88162 Lieutenant 19 Rep 595 Posts Drives: E92 328i Join Date: Jun 2013 Location: Clinton, IN iTrader: (0)	INPA provides a lovely graph with bounds for regular values of a MAF... It isn't difficult to read or record this graph while you let the engine go through some driving conditions. From there, you can easily determine if your MAF is wonky or not...
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04-11-2015, 12:55 PM	#29
Taskmaster Banned 2476 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	Ran a Q50 from a roll in second, and started to pull....then I hit 3rd gear and he got a car and a half and held it.
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04-13-2015, 05:53 PM	#34
Three_thirty_I Lieutenant Colonel 378 Rep 1,928 Posts Drives: 2010 BMW E90 330i M Sport Join Date: Aug 2010 Location: Cape Town, South Africa iTrader: (0) Garage List 2010 BMW E90 330i M ... [9.63]	I feel your pain TheAxiom! Been battling with my car's pinging problem for ages, and this includes some definite dips in power delivery around low to mid revs. Below 2000 rpm there are some dips, along with the pinging, and then around 2500 rpm there are some stumbles, but at roughly 3000 rpm (sometimes 2800 or 3200 rpm) there is a distinct dip in power which is so annoying! I have done so much already trying to solve this, in the end it is just robbing me blind! And my car is 100% stock, so not an issue with a mod gone wrong or "fiddling" of any kind. So frustrating. __________________ 2010 BMW E90 330i M Sport (M) Ex: BMW E90 330i (M) '05 (His) \| (Hers) BMW E46 320i f/l (M) '03
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04-14-2015, 07:54 PM	#38
Three_thirty_I Lieutenant Colonel 378 Rep 1,928 Posts Drives: 2010 BMW E90 330i M Sport Join Date: Aug 2010 Location: Cape Town, South Africa iTrader: (0) Garage List 2010 BMW E90 330i M ... [9.63]	Try and see if you can swap the MAF out with a good one from another car and see. One of my more recent endeavours was to just replace the MAF with a new one, but made no difference - was a calculated gamble, sort of like buying this car. LOL __________________ 2010 BMW E90 330i M Sport (M) Ex: BMW E90 330i (M) '05 (His) \| (Hers) BMW E46 320i f/l (M) '03
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04-17-2015, 09:34 PM	#40
Taskmaster Banned 2476 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	The car does feel a little flat at times, but for the most part it feels a lot better. I'm going to swap the MAF and see if that helps any more. So far I would put it at a 7/10 Most of the time, but when it's 10/10 it REALLY Scoots.
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04-18-2015, 05:34 PM	#41
Tom Droze Major 413 Rep 1,286 Posts Drives: 2012 BMW 328i (e92) Join Date: Jul 2014 Location: Scottsdale, Arizona iTrader: (0)	Any updates here? What did you finally do to resolve your issue? __________________ 2012 Jet Black 328i Coupe / ESS Tuning Gen. 2 Supercharger / Evolution Racewerks Oil Cooler / BMS Oil Catch Can / BMW Performance Exhaust with Dinan Y Pipe / Eibach Pro Kit Springs / Koni FSD Shocks / MFactory LSD & Differential Bushings / Performance Rear Trailing Arms / BMW Performance Strut Brace / Stop Tech Slotted Rotors / Hawk HPS 5.0 / SS Brake Lines / Brass Guide Pins / M3 Front Control Arms, 28 MM FSB, Engine Cowl, and DCT Paddle Shifters / Michelin PSS / APEX ARC-8
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