Search found 13 matches

by josh@severntuning
Sat Oct 24, 2020 3:03 pm
Forum: DME Tuning Tech
Topic: MS45 - Tuning the Intake Manifold Model and Torque Tables
Replies: 12
Views: 11286

Re: MS45 - Tuning the Intake Manifold Model and Torque Tables

You're most likely correct that your car is not entering full load enrichment and still targeting a stoichiometric part-load AFR. I do adjust part load tables to target a richer mixture and smooth the transition to full load, so that even if the car doesn't go into full load enrichment the AFR is st...
by josh@severntuning
Tue May 26, 2020 5:46 pm
Forum: DME Tuning Tech
Topic: Tuning MS45.1
Replies: 19
Views: 14532

Re: Tuning MS45.1

The MS45 ECU can be scaled for any sized injector. I’m running Porsche 997tt injectors (650cc). The correction factor is a time correction... with the stock injectors it is set to 1, and with the Porsche injectors I set it to 0.4 (injector pulsewidth will be 40% of stock). @josh@severntuning can yo...
by josh@severntuning
Tue May 26, 2020 4:53 pm
Forum: Tuning Requests
Topic: SoCal burble tuning
Replies: 2
Views: 909

Re: SoCal burble tuning

We also offer this service through ByteTuner and are located in Oxnard. In addition, we provide fully customized performance tunes. josh@severntuning.com
by josh@severntuning
Sun May 17, 2020 5:25 pm
Forum: DME Tuning Tech
Topic: MS45 Doubled MAF Sensor Range
Replies: 6
Views: 5735

Re: MS45 Doubled MAF Sensor Range

Here's the base MS45.0 file with the Audi RS4 MAF values filled in. I pulled the RS4 values from a WinOLS file and used linear interpolation to find the mass flow (kg/hr) for the MS45.0 break points (voltage).
by josh@severntuning
Mon Mar 30, 2020 12:52 am
Forum: DME Tuning Tech
Topic: MS45 MAF Transfer Curve Comparison
Replies: 14
Views: 12072

Re: MS45 MAF Transfer Curve Comparison

Here's a 512x1 RS4 MAF curve I pulled off of a WinOLS project. It's pretty close to the RS4 curve available on e46fanatics, other than ~200 kg/hr offset I've estimated. If you want to use mine, you'll need to delete every other cell.
by josh@severntuning
Mon Mar 30, 2020 12:17 am
Forum: DME Tuning Tech
Topic: MS45 MAF Transfer Curve Comparison
Replies: 14
Views: 12072

Re: MS45 MAF Transfer Curve Comparison

There are multiple MAF curves for the same part number, and multiple sensors that share the same part number. There's a "large diameter housing" RS4 version and a smaller diameter housing version. If you're using the RS4 curve, make sure you're using the RS4 MAF and not the B5 S4 MAF. https://www.ec...
by josh@severntuning
Fri Mar 27, 2020 3:37 am
Forum: DME Tuning Tech
Topic: MS45 MAF Transfer Curve Comparison
Replies: 14
Views: 12072

Re: MS45 MAF Transfer Curve Comparison

1. I have checked they have same resistance in 20celsius and from Live Data I have checked in cold mornings it seems to be pretty accurate. Higher temps I can't be sure yet as we have cold weather here at the moment and I haven't tested they for example 35-50 celsius environment but yeah that's goo...
by josh@severntuning
Tue Mar 24, 2020 9:51 pm
Forum: DME Tuning Tech
Topic: MS45 MAF Transfer Curve Comparison
Replies: 14
Views: 12072

Re: MS45 MAF Transfer Curve Comparison

1. The IAT sensor is integrated into both the stock MS45 and the RS4 MAF sensor. You'll need to compare the curves of both sensors and ensure they are close. In theory you should be able to use the RS4 MAF sensor's IAT sensor without issue. IIRC they are both 5 wire setups, though I haven't had a ch...
by josh@severntuning
Tue Jul 30, 2019 10:01 am
Forum: DME Tuning Tech
Topic: MS45 - Tuning the Intake Manifold Model and Torque Tables
Replies: 12
Views: 11286

Re: MS45 - Tuning the Intake Manifold Model and Torque Tables

Wow...probably the best "first post" ever! There is so much information here! I'm glad you guys are pushing the boundaries of tuning the torque tables. This is how the community will learn what's possible with these DMEs! In other news, we figured out the additive checksum algorithm (for MS43 and M...
by josh@severntuning
Tue Jul 30, 2019 9:55 am
Forum: DME Tuning Tech
Topic: MS45 - Tuning the Intake Manifold Model and Torque Tables
Replies: 12
Views: 11286

Re: MS45 - Tuning the Intake Manifold Model and Torque Tables

Hi Josh, wow, thank you very much for that post, i'm currently starting to play around with my E85 Z4 3.0i and the information here is very helpful. I'm currently building the new airflow setpoint table with the information you provided. By accident i figured out a strange thing: I've raised all ce...
by josh@severntuning
Tue Jul 30, 2019 9:24 am
Forum: DME Tuning Tech
Topic: Tuning MS45.1
Replies: 19
Views: 14532

Re: Tuning MS45.1

What parameters did you adjust for the secondary O2’s and SAP? The MS45 ECU can be scaled for any sized injector. I’m running Porsche 997tt injectors (650cc). The correction factor is a time correction... with the stock injectors it is set to 1, and with the Porsche injectors I set it to 0.4 (inject...
by josh@severntuning
Tue Jul 23, 2019 7:38 am
Forum: DME Tuning Tech
Topic: Sporadic timing jumps,RPM dip at idle
Replies: 1
Views: 2469

Re: Sporadic timing jumps,RPM dip at idle

Can you post some details about your setup?
by josh@severntuning
Fri Jul 12, 2019 12:12 am
Forum: DME Tuning Tech
Topic: MS45 - Tuning the Intake Manifold Model and Torque Tables
Replies: 12
Views: 11286

MS45 - Tuning the Intake Manifold Model and Torque Tables

I’ll start off with a disclaimer – what I know today about MS45 is not what I knew yesterday, and it may be different than what I know tomorrow. Knowledge of the MS45.0 and MS45.1 ECU is constantly evolving; new discoveries are being made several times a year. I don’t take credit for finding the tab...

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