|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
N53 330i Powweerrr loss
|
|
05-30-2017, 06:19 AM | #23 | |
Second Lieutenant
36
Rep 278
Posts |
Quote:
I have Carly 1st generation but I'm not sure how to monitor the Nox. do you know which settings it is? And how do you burn off the sulphur in the cat? Is it similar to forcing a DPF regen on a diesel by a spirited, high rev run for about half an hour or so? Glad to hear your issues are sorted anyway mate, I really hope BMW take note of this and revise the injectors again. I think N54 engines are up to Rev12 |
|
Appreciate
0
|
05-30-2017, 02:04 PM | #24 | |
Enlisted Member
11
Rep 31
Posts |
Quote:
sulphur content should start burning somewhere around 680-800 degrees Celsius (forgot as i did this 3/4 months ago) all i can say in my experience, my sulphur mass was at 850mg (max should be 400mg) and that obviously took longer then 30mins. just make sure you have a full tank of fuel. it doesn't matter if its cheap asda or expensive shell ultra |
|
Appreciate
0
|
05-30-2017, 02:11 PM | #25 |
Enlisted Member
11
Rep 31
Posts |
I had mine deleted off the map and the second set of cats deleted. now it only shows homogen... something (forgot how it was spelt)
|
Appreciate
0
|
05-30-2017, 04:56 PM | #26 | |
Captain
102
Rep 681
Posts |
Quote:
I've noticed on mine occasionally if it's sat idling for a while the engine note changes and it sounds very quiet... like a normal port injected straight 6 of old.. I would love to get that permanently! |
|
Appreciate
0
|
05-31-2017, 07:09 AM | #27 | ||
Second Lieutenant
36
Rep 278
Posts |
Quote:
Brilliant thanks mate I dont mind paying a bit for the add-on in order to reduce Nox levels. The regen procedure sound similar to diesels; guess it makes sense to increase the revs in order to help burn the sulphur off. Quote:
How is the car without secondary cats in terms of power and noise? Do you get pops/crackles on the overrun? |
||
Appreciate
0
|
06-02-2017, 09:09 PM | #28 | |
Enlisted Member
11
Rep 31
Posts |
Quote:
|
|
Appreciate
1
Tr1ppy35.50 |
06-02-2017, 09:15 PM | #29 |
Enlisted Member
11
Rep 31
Posts |
sound wise it does have a slight raspy (a little like the e46 m3) when high revving and a beefier tone when slowly accelerating, wont be able to hear it properly unless you have the rear windows wide open or let someone else drive it. other then that it sounds the same as before when sitting in the car with your windows closed. I do miss my e46 320D when i had the ecotune down pipe as i could hear the turbos spool
|
Appreciate
0
|
01-03-2018, 08:33 AM | #30 |
Enlisted Member
16
Rep 34
Posts |
I also had N53 530i dyno'd recently at Surrey Rolling Road, 244bhp / 248 lbs/ft. This is the calculated flywheel figures by the way. They didn't provide me with the wheel figure print-out as most people are only interested in the flywheel number, but he told me verbally that my wheel figure was 210bhp / 214 lbf/ft so they used a 14% loss to calculate the flywheel figures. He also said my fuelling AFR is fine and my car has no running issues no fault codes etc.
Please can you post your RR print-out as it would good to compare like-for-like. Last edited by leew88; 01-03-2018 at 08:40 AM.. |
Appreciate
0
|
03-07-2019, 06:37 PM | #31 |
Enlisted Member
11
Rep 31
Posts |
Sold my car to my cousin as i gave up and wanted something with a turbo, so i brought a audi a4 2.0T quattro.
But anyway i am curious if the power loss has got something to do with the intank fuel strainer which acts like a fuel filter. Obviously the cars ecu might take that in consideration if its getting a slight low fuel so it adjust the power maybe? i would also like to point out the following work i had done on the engine 2nd cat delete (nox cats) and nox burn cycle just incase oil change spark plugs air filter 6x rev 11 injectors and program to the ecu by a indy BMW tech wall nut blast (valves didnt look that bad) the things i have not done are followed: coil pack intank fuel strainer |
Appreciate
0
|
03-09-2019, 04:15 AM | #33 |
New Member
3
Rep 15
Posts |
Please bear in mind that rolling roads are not exact devices for power measurement, I test/tune engines on engine dynos and rolling roads professionally and know the limitations of trust that can be applied! In the case of eddy brake rollers, torque at the roller is what's measured and there are a lot of ifs between that and the true flywheel output. All figures are estimated, "wheels" and "flywheel"; they way each rolling road does that varies and relies on a combination of roller torque raw, rate of acceleration (vs inertia estimate), environmental observations and engine temps/pressure (although later is rarely used in practice). The success of the estimates against the reality varies and is not consistent, due to tyre/transmission and environmental variables, so it's a fools paradise to say "these rollers are heart breakers" or "these rollers speak the truth" and other common clichés, it's just not that simple.
Your best hope is to find a rolling road operator with a good enough understanding of their machine, to give you reasonably consistent results on your car and use that as a base line. If you really want to know if your engine is comparable with stock original, you'll have to tear it all out and find a good engine dyno, which would an unjustifiable amount of hassle. |
Appreciate
0
|
Bookmarks |
|
|