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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Bimmerlabs 330i Tune DIY Step by Step



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      08-08-2024, 06:08 AM   #815
jkho
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BimmerLabs 125i to 130i --> Dyno Results

Quote:
Originally Posted by jkho View Post
Firstly big shout out to Hass, Rjhal, Terra and whomever else I missed... you guys are the real MVP!
Also appreciate the YouTube video E92William; lucky mine went smoothly like yours without any FatalErrors

I got this done on my Aussie MY09 E82 125i last weekend.
Unlocked some N52 goodness, super stoked with my 130i Coupe

My write up here --> https://www.1addicts.com/forums/show...0&postcount=11

Dumbed it down... might have some additional checks and explanation that might help guide you in the right direction!
Click here, https://www.1addicts.com/forums/show...1&postcount=14

Dynodynamics in kw.
But I've done a conversion to HP and estimated DynoJet result/gains.
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MY09 E82 125i M-sports --> | Black/Black | Rims: 18" 261s | 130i Tuned with BimmerLabs | Flowdesigns Splitter kit with front lip extensions | CF spoiler | CF M-Tech diffuser | Blacklines 63212225282 | Black Dual Slat Kidney | Xenons: D-Series 6000k LED | AE: NovSight 6000k LED |
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      08-08-2024, 12:34 PM   #816
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Quote:
Originally Posted by wayman519 View Post
Since the tune my car killed a set of NGK laser platnium spark plugs I replaced last april. The 330i was specced with laser iridium plugs from factory.
My car went from averaging 24 mpg to 20 mpg after the tune. And it is not from driving like a jackass after the tune. I have NGK laser platinum plugs right now. I'm wondering if that is part of the problem, since the 330i is spec'd with laser iridium. I just ordered a set of laser iridium plugs to try out and see if that makes any difference.
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      08-25-2024, 08:31 PM   #817
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Quote:
Originally Posted by firesnatch View Post
My car went from averaging 24 mpg to 20 mpg after the tune. And it is not from driving like a jackass after the tune. I have NGK laser platinum plugs right now. I'm wondering if that is part of the problem, since the 330i is spec'd with laser iridium. I just ordered a set of laser iridium plugs to try out and see if that makes any difference.

Since i put in the NGK ruthenium plugs everything has been perfect, iridiums should be great too. If your coils have over 100k i would replace those.
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      08-26-2024, 08:02 AM   #818
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Quote:
Originally Posted by wayman519 View Post
Since i put in the NGK ruthenium plugs everything has been perfect, iridiums should be great too. If your coils have over 100k i would replace those.
Thanks for the tip. It has been a few weeks and I forgot to post an update. I put in new NGK 1208 Laser Iridium plugs. My gas mileage went back up from 20mpg average to 23.2 average, which is pretty close to what I had before. So good enough for me.

EDIT: 2 months later I'm at 23.7 average. I changed out one coil pack that was older than the rest and changed my rear diff fluid. Those are the only things that could have contributed to improved mileage.

Last edited by firesnatch; 10-18-2024 at 02:56 PM..
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      10-16-2024, 10:53 AM   #819
wayman519
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One last update, I had the weird rough cold start after the tune. Turns out my valvetronic football gasket was not sealing anymore. I had leaking oil on the valve cover in pools and fuel trims +10%. I replaced the gasket but i had not installed it properly and the problem got worse. To install the gasket properly i laid it on my bench table with motor facing side down and tried to bend the mounting screw hole tabs towards the table. This required a shit tonne of force to maybe move it 0.25 to 0.5mm. I then installed the gasket ensuring it was seated correctly to the plastic valve cover and torqued the bolts down. You can then insert the motor and align the inner gasket with the motor screws and torque it down. Now insert the last motor screw at the bottom of the motor and torque it down. This fixed my rough cold start and my trims are +-2%. I have seen messages about this tune causing rough cold start. It does not cause the rough start, but will be more apparent since the valve lift has been increased.

Last edited by wayman519; 10-16-2024 at 11:28 AM..
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      10-17-2024, 12:55 PM   #820
mattanderson
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Quote:
Originally Posted by wayman519 View Post
One last update, I had the weird rough cold start after the tune. Turns out my valvetronic football gasket was not sealing anymore. I had leaking oil on the valve cover in pools and fuel trims +10%. I replaced the gasket but i had not installed it properly and the problem got worse. To install the gasket properly i laid it on my bench table with motor facing side down and tried to bend the mounting screw hole tabs towards the table. This required a shit tonne of force to maybe move it 0.25 to 0.5mm. I then installed the gasket ensuring it was seated correctly to the plastic valve cover and torqued the bolts down. You can then insert the motor and align the inner gasket with the motor screws and torque it down. Now insert the last motor screw at the bottom of the motor and torque it down. This fixed my rough cold start and my trims are +-2%. I have seen messages about this tune causing rough cold start. It does not cause the rough start, but will be more apparent since the valve lift has been increased.
Thanks for this info, I definitely have a cold rough start with an initial high idle.

Sorry if I missed it but how are you logging fuel trims?
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      10-18-2024, 04:14 PM   #821
wayman519
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Quote:
Originally Posted by mattanderson View Post
Thanks for this info, I definitely have a cold rough start with an initial high idle.

Sorry if I missed it but how are you logging fuel trims?
Oh yeah i had the high rpm cold start too, it also went away with the vacuum leak fixed.

I used dashcommand app and a generic bluetooth obd adapter. Its easier to log while im driving and record the whole trip.
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