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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 08-15-2012, 10:52 PM   #101
jared_wiesner
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No logging software, though it may be worth using Smooth1's and getting some values to send back.
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Old 08-16-2012, 08:25 AM   #102
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Jared- how different is the "euro" tune vs the stock one? I'd be curious about the Epic vs the stock USDM tune...

Also, more of an aside... but i still don't understand why everyone insists on tuning N/A cars to 13:1. I've tuned a considerable amount of N/A late model HEMI's and other vehicles and they all seemed to make more power runner slightly richer (12.5-12.25) allowing for more timing without spark knock. Having done email tunes before I can honestly say that without data-logging, you have to be so safe you're really pretty limited. I've tuned two cars with the EXACT same mods but several states apart and had to adjust timing tables 3-4 degrees... which is a lot.

Did they provide you with any logging software?
I agree that datalogging can be an invaluable tool when remote tuning.
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Old 08-20-2012, 02:33 PM   #103
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Ok, after a lot of time researching and speaking to multiple people about the testing methods I used, I really don't want to give this tune a bad name based on the results so far. The variables (especially the fact that the adaptations were not cleared and relearned) simply did not set it up for success.

After everyone who donated to the dyno time, I owe you all a proper picture of what this tune does. I am getting an exhaust in short order. I will swap it to the stock tune, run it for a few weeks, go and dyno, and then switch to the epic tune, clear adaptations and do a few more runs. No set deadline yet, but I will get this done for you all.
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Old 08-20-2012, 09:31 PM   #104
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Old 09-13-2012, 01:10 PM   #105
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Update*** epic calibration with cams and exhaust

I just got ahold of Randy at Epic today.

I spoke to him about updating my tune for my 3 inch exhaust with the Burns merger and the Schrick 264/248 cams that are going to be going in.

This was his response.

"Definately the collector and more importantly the cams will require changes to the calibration data. It may be best to stick it on the dyno while we are connected and remote calibrate it"

Needless to say, I'm excited!
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Old 09-13-2012, 01:14 PM   #106
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interested in results.....i am still on the fence about dyno tuning my car. i'm not going much more than catless headers on my zhp, but i know there is still power left on table on my current tune file.
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Old 09-13-2012, 01:51 PM   #107
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interested in results.....i am still on the fence about dyno tuning my car. i'm not going much more than catless headers on my zhp, but i know there is still power left on table on my current tune file.
Ya, he's already given me his best guess (basically off the shelf) at a tune for my headers, intake, and m54B30 intake manifold. So this will just be to get the most out of the exhaust and cams.
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Old 09-13-2012, 03:20 PM   #108
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Definitely interested in results, too. I'd hook you up with a logging license as well since they might find it very useful to watch/graph data during the tuning process. That's an area I'd love to get some feedback.
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Old 02-10-2013, 11:25 PM   #109
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Any updates?

I have a M54B30 ZHP and an Epic tune that yielded very little. I gained a few ponies at low rpm (which I wanted most), and lost a bit over 5k
I don't think this engine wants to make a lot more power:
Magnaflow Catback = Nothing but a great sound
Carbonio Cold air intake = No gain below 4300 rpm and picked up about 8hp from 4800+
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Old 02-11-2013, 06:17 AM   #110
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Nothing yet, I'll be getting a dyno tune over the phone with epic in the spring.
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Old 02-11-2013, 10:50 AM   #111
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Nothing yet, I'll be getting a dyno tune over the phone with epic in the spring.
What a waste of money. I've been telling people that BMW did a good job on their stock tunes expecialy the Euro ones. These comercial tuners are desperate to make money they sell snake oil to people.
Simple formula to make more power on your engine is reduce the restriction of air going in and out of the engine, reduce rotating mass. If you can't get more air in the engine it won't make more power.
Only way to increase the power significantly on naturally aspirated engine is to increase the compression ratio and run slightly more aggressive camshaft along with increased compression. Everything else is just big waste of money
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Old 02-11-2013, 11:20 AM   #112
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What a waste of money. I've been telling people that BMW did a good job on their stock tunes expecialy the Euro ones. These comercial tuners are desperate to make money they sell snake oil to people.
Simple formula to make more power on your engine is reduce the restriction of air going in and out of the engine, reduce rotating mass. If you can't get more air in the engine it won't make more power.
Only way to increase the power significantly on naturally aspirated engine is to increase the compression ratio and run slightly more aggressive camshaft along with increased compression. Everything else is just big waste of money
Except according to my dyno thread, people without tunes almost always make less power than those with it, including my own car.
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Old 02-11-2013, 12:53 PM   #113
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Except according to my dyno thread, people without tunes almost always make less power than those with it, including my own car.
I've seen your thread. People there do other upgrades together with the tune so you can't realy tell from where the gain comes from. And if there is gain it usualy comes from the cost of low end power and torq just to gain few HP near redline. BMW does not leave any meat on the bone when it comes to ECU programming, they max it out for 91 octane fuel and tell you to use premium fuel.
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Old 02-11-2013, 01:17 PM   #114
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I've seen your thread. People there do other upgrades together with the tune so you can't realy tell from where the gain comes from. And if there is gain it usualy comes from the cost of low end power and torq just to gain few HP near redline. BMW does not leave any meat on the bone when it comes to ECU programming, they max it out for 91 octane fuel and tell you to use premium fuel.
I have done pretty much every bolt-on including cams, you've got to be kidding if you think that the stock tune will run the car better with all these changes than one tweaked on the dyno just for them

Just to put things in perspective, back around e-test time, I flashed back on the BMW tune for the emissions sniffer test. The car failed horribly. I flashed on the Epic tune and while it didn't quite pass that way, the readings were super close to where they should be. Clearly the car was running more happily on the Epic tune.
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Old 02-11-2013, 01:41 PM   #115
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Originally Posted by HakenTT View Post
I've seen your thread. People there do other upgrades together with the tune so you can't realy tell from where the gain comes from. And if there is gain it usualy comes from the cost of low end power and torq just to gain few HP near redline. BMW does not leave any meat on the bone when it comes to ECU programming, they max it out for 91 octane fuel and tell you to use premium fuel.
I didn't lose any power, so there goes that point.
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Old 02-11-2013, 01:49 PM   #116
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HakenTT,
you need to lurk moar.
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Old 02-12-2013, 08:26 AM   #117
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Originally Posted by HakenTT View Post
I've seen your thread. People there do other upgrades together with the tune so you can't realy tell from where the gain comes from. And if there is gain it usualy comes from the cost of low end power and torq just to gain few HP near redline. BMW does not leave any meat on the bone when it comes to ECU programming, they max it out for 91 octane fuel and tell you to use premium fuel.
There is actually room for improvement. You've admittedly never tuned a car on the dyno, but once you get a chance to I think you'll have a much better understanding.
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Old 06-14-2013, 01:37 PM   #118
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Time for an update!

I've saved up a bit of cash and will be proceeding with a custom remote dyno tune by Randy Mueller of Epic Motorsports in the next few weeks. (Likely the week of the 24th)

It's now got schrick 264 cams and a 3 inch custom exhaust on top of the rest, we'll see what happens.
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Old 06-14-2013, 03:35 PM   #119
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Anxious to see what these guys can do!
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Old 06-14-2013, 03:48 PM   #120
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Originally Posted by jared_wiesner View Post
Time for an update!

I've saved up a bit of cash and will be proceeding with a custom remote dyno tune by Randy Mueller of Epic Motorsports in the next few weeks. (Likely the week of the 24th)

It's now got schrick 264 cams and a 3 inch custom exhaust on top of the rest, we'll see what happens.

In my fantasy world, this is what I'd like;

While on the dyno, you:

1) You first dyno the car in its current state, with its current hardware and aftermarket tune. If on a Dynojet, CF = SAE, RPM, and AFR. Log with a printout what your WHP and WTQ numbers are.

2) Pull off the aftermarket tune and go back to stock, re-dyno. Log with a printout what your WHP and WTQ numbers are.

3) Now start tuning in your Epic Motorsports Remote tune, when it's all dialed in, log with a printout what your WHP and WTQ numbers are.
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