[drhousedk]

My 01/2007 E91 330d is missing some power in the top end, and a dyno clearly shows this. Lambda figures are showing a lack of fuel in the top end.

A local tuning company (and a close friend of mine) has done the remap, and it goes like a hammer. Boost seems fine and strong in the top end, but fuel... Well. Seems like it's not getting enough. If he waits until around 3500 rpm to floor it, it measures more power in this range (~20hp) than when flooring it from from 1500 rpm.

I'd really like to know if the fuel filtercould be the culprit of this. The car has got 190k miles on it, and as BMW says it's a lifetime part, I'm considering if the "lifetime" bit is true though.

Currently running @ 335 bhp and 835 nm (616 lbft). DPF removed.

Could it be anything else?

[anielsen71]

Hmm i just Got my fuel filter changed on a aut. BMW Service shop so wouldn't not call it a lifetime part(if such exists)

is it landberg who's done it?
Would like to see a dyno graph from it.

[Hoooper]

BMW doesnt say the fuel filter is a lifetime part in the US, they say to replace it every third oil change (originally it was every 2nd oil change). If the filter has 190k miles on it that could definitely be a reason. Its cheap enough to replace that you might as well do it, especially since it sounds like its way overdue anyway. There is no such thing as a lifetime (lifetime in the sense that it never needs to be replaced, not lifetime in the sense of the typical expected life) filter, especially if it doesnt have a provision to get backflushed.

[drhousedk]

Originally Posted by anielsen71

Hmm i just Got my fuel filter changed on a aut. BMW Service shop so wouldn't not call it a lifetime part(if such exists)

is it landberg who's done it?
Would like to see a dyno graph from it.

They also say lifetime gearbox fluid, I just replaced it 5000 kms ago.

Yes, Landberg did it. Told him to just push it to the absolute limit, but as the turbo provides solid boost and the AFR goes lean, something points to the injection system being at fault.

Regarding the dyno graph, I'll see if I can find it - he never sent it in the first place as the graphs wasn't what he wanted them to be. I know him personally, so I know he's not messing with me - he just wants it to be PERFECT before "bragging".

Originally Posted by Hoooper

BMW doesnt say the fuel filter is a lifetime part in the US, they say to replace it every third oil change (originally it was every 2nd oil change). If the filter has 190k miles on it that could definitely be a reason. Its cheap enough to replace that you might as well do it, especially since it sounds like its way overdue anyway. There is no such thing as a lifetime (lifetime in the sense that it never needs to be replaced, not lifetime in the sense of the typical expected life) filter, especially if it doesnt have a provision to get backflushed.

I will get it done asap then, seems to be a pretty easy job, so I figure, why not... :-)

[GreekboyD]

190,000 miles on your original fuel filter?!

Change it ASAP!

[anielsen71]

Originally Posted by drhousedk

They also say lifetime gearbox fluid, I just replaced it 5000 kms ago.

Yes, Landberg did it. Told him to just push it to the absolute limit, but as the turbo provides solid boost and the AFR goes lean, something points to the injection system being at fault.

Regarding the dyno graph, I'll see if I can find it - he never sent it in the first place as the graphs wasn't what he wanted them to be. I know him personally, so I know he's not messing with me - he just wants it to be PERFECT before "bragging".



I will get it done asap then, seems to be a pretty easy job, so I figure, why not... :-)

Hmm wonder what he could do to mine running with hybrid turbo, Wagner FMIC and no filter at 329hp/715nm.
Maybe I should give him a call....
How is it on the street? One thing is the numbers...another is how it is on the road. Mine is very good on the road as it is..very comftable and very good matched to the auto box....not like the former tuner did it...

[BB_cuda]

drhousedk, make sure to check into repriming the fuel system with the lifting pump. If you don't, there will some abuse of your high pressure pump pump air until diesel gets up to it.

I have yet to do the filter change so no 1st hand experience to offer. I recall a couple guys using software and OBD cable to do this (one guy used Bavarian Technique cable). Dealer changed my fuel filter at 3rd oil change.

[drhousedk]

Originally Posted by GreekboyD

190,000 miles on your original fuel filter?!

Change it ASAP!

Will do - can't find anything about it in the service book.

Originally Posted by anielsen71

Hmm wonder what he could do to mine running with hybrid turbo, Wagner FMIC and no filter at 329hp/715nm.
Maybe I should give him a call....
How is it on the street? One thing is the numbers...another is how it is on the road. Mine is very good on the road as it is..very comftable and very good matched to the auto box....not like the former tuner did it...

If you just tell him to go ahead, I'm sure he can do something nice for you. I'm running a completely stock engine except for the DPF being removed. Not even the swirl flaps are gone yet (but the blanking kit is waiting in the workshop).

My car is very drivable. IIRC max torque is around 2000 rpm, so it sure pulls.

Can I see your dyno graph while waiting for mine? :-)

Regarding the ride, I've just replaced the original shocks (three of them were shot) with a brand new set of Bilstein B4S'es. Yes, cheapo option, but anyways, it rides like a gem now!

Originally Posted by BB_cuda

drhousedk, make sure to check into repriming the fuel system with the lifting pump. If you don't, there will some abuse of your high pressure pump pump air until diesel gets up to it.

I have yet to do the filter change so no 1st hand experience to offer. I recall a couple guys using software and OBD cable to do this (one guy used Bavarian Technique cable). Dealer changed my fuel filter at 3rd oil change.

I'm looking into ISTA Rheingold, which should be able to do just this - otherwise INPA might be able to do the job. But thanks for the tip, makes perfect sense to ensure that the high pressure pump won't run dry!

[anielsen71]

Originally Posted by drhousedk

Will do - can't find anything about it in the service book.



If you just tell him to go ahead, I'm sure he can do something nice for you. I'm running a completely stock engine except for the DPF being removed. Not even the swirl flaps are gone yet (but the blanking kit is waiting in the workshop).

My car is very drivable. IIRC max torque is around 2000 rpm, so it sure pulls.

Can I see your dyno graph while waiting for mine? :-)

Regarding the ride, I've just replaced the original shocks (three of them were shot) with a brand new set of Bilstein B4S'es. Yes, cheapo option, but anyways, it rides like a gem now!

Sure, i'll find my graph for you. I've just send Thomas a mail

With my current setup I run equal with an E46 M3 and just wasts std 335d's in a straight line :-)

Regarding suspension, I'm running eibach sports, Bilstein B8, eibach anti roll bars and full power flex bushings. And still...I'm considering changing to Bilstein B16 IRC

[drhousedk]

Originally Posted by anielsen71

Sure, i'll find my graph for you. I've just send Thomas a mail

With my current setup I run equal with an E46 M3 and just wasts std 335d's in a straight line :-)

Regarding suspension, I'm running eibach sports, Bilstein B8, eibach anti roll bars and full power flex bushings. And still...I'm considering changing to Bilstein B16 IRC

My goal is actually exactly an E46 M3... When you do full throttle starts, do you start in M2 or?

Sounds like a VERY!!! nice setup. Must ride like nothing else!

[Hoooper]

Are you guys talking about supercharged or otherwise heavily modded e46 m3s? A 335d with tune and DPF delete should absolutely ruin a stock e46 m3

[drhousedk]

Originally Posted by Hoooper

Are you guys talking about supercharged or otherwise heavily modded e46 m3s? A 335d with tune and DPF delete should absolutely ruin a stock e46 m3

Stock E46 M3, and our cars are 330d's. Only thing affordable in Denmark. A very used example with 190k miles on the clock costs around USD 30k - if you look the right places...

[anielsen71]

This is the latest dyno from BR Performance from last fall:
https://dl.dropboxusercontent.com/u/..._AW_31_033.pdf
A bit less than i remembered, 320bhp/706nm

And yes, our cars is 330d's. Not a model that has ever been on sale in the US to my knowledge. Single turbo setup with 231bhp/500nm as stock.

And yes its a nice suspension. Really firm and really stable at higher speeds :-)

[drhousedk]

Originally Posted by anielsen71

This is the latest dyno from BR Performance from last fall:
https://dl.dropboxusercontent.com/u/..._AW_31_033.pdf
A bit less than i remembered, 320bhp/706nm

Very similar curves, except for my power curve which dips around 3000-3200 rpm, so I'm missing out on a few horsepower. It should produce 355-360 hp at 3800 rpm, but doesn't, due to a lack of fuel...

[anielsen71]

Btw, have a look under the European subforum.
We have a tread from denmark going there :-)

I have been investigating a bit on the autobox. It's made to handle aprox 600nm input.
Have you done any preventive action to make it last?
For me i've only changed fluids and filters every 70-80.000 km

[drhousedk]

Originally Posted by anielsen71

Btw, have a look under the European subforum.
We have a tread from denmark going there :-)

I have been investigating a bit on the autobox. It's made to handle aprox 600nm input.
Have you done any preventive action to make it last?
For me i've only changed fluids and filters every 70-80.000 km

Could you help we with a link?

I've change fluids, and I'm planning to do a converter upgrade in the future. It seems to be the converter that bites the bullet.

Edit: Recorded a video using SnagIt... WOT:

Seems like the rail pressure is just fine.

[anielsen71]

Sure, http://www.e90post.com/forums/showth...6#post17838176

[Vacheron16]

Hi

I´m surprissed you get so much out of your engines. I undertand if u loose the DPF it gives a extra bit.

But still think your numbers are high.

I got my 325d up to 292 Hp and 600 Nm. Maybe i can get more now I don´t know? Especially if i drop the DPF? how much will this give me and can u feel the difference?

I can hang with a stock 335d now but always want more. I believe the 336 M57 motor will give the same hp output as a 330d M57 when optimized.

[anielsen71]

I talked to a norwegian in here a few months back.
He had changed the injectors to 335d type and given it a tune....310hp, dont remember the torque.
So...its possible on 325d also.

[_TB_]

Originally Posted by Vacheron16

Hi

I´m surprissed you get so much out of your engines. I undertand if u loose the DPF it gives a extra bit.

But still think your numbers are high.

I got my 325d up to 292 Hp and 600 Nm. Maybe i can get more now I don´t know? Especially if i drop the DPF? how much will this give me and can u feel the difference?

I can hang with a stock 335d now but always want more. I believe the 336 M57 motor will give the same hp output as a 330d M57 when optimized.

if you're at 292bhp with original 325d injectors - you're running beyond the reasonable limit. The DPF will suffer from it.. Upgrade the injectors to either 330d og 335d (272 bhp version)