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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 08-06-2014, 04:35 PM   #141
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seeing as i bought the headers can we see that dyno graph now?
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Old 08-06-2014, 08:11 PM   #142
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seeing as i bought the headers can we see that dyno graph now?
I suppose.

Techniks versus Kromer Krafts.

Incidentally I still think there's a bit more power with exhaust cam tuning, but that's for over the winter. I'm not tearing into the car again with the National Championships coming up so soon.
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Old 08-07-2014, 10:23 AM   #143
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Wow awesome stuff solo! It's amazing what you miss when you leave for a while. I'm glad people like you are still pushing the boundaries for this platform. This may have to be the next thing I do to my car.
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Old 08-07-2014, 12:58 PM   #144
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Wow awesome stuff solo! It's amazing what you miss when you leave for a while. I'm glad people like you are still pushing the boundaries for this platform. This may have to be the next thing I do to my car.
Are you still working on Dremeling out your throttle body?
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Old 08-07-2014, 03:21 PM   #145
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Heh, it's still sitting on my bench. I really never expected that to really work dremeled out anyhow I just wanted to see if the walls had the material to go big enough to make it worthwhile to get someone to bore it/have the chance to run it at full throttle and see if it made power, but the chance of it being able to really idle without stalling would be pretty slim.

In any case, I kinda decided it wasn't the major bottle neck when I realized the big error I made by piping all of my exhaust into a single 3 inch magnaflow cat right after the merge. I'm making a test pipe this week as the whole car is going back together from subframe re-enforcement and the exhaust is handy anyhow. There is no way that a quasi "high flow" single cat would be able to flow enough. The whole car went on the back burner for a while (basically the whole time I was gone), but I'm really excited to see what happens when I uncork the exhaust.
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Old 08-07-2014, 04:31 PM   #146
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Wow awesome stuff solo! It's amazing what you miss when you leave for a while. I'm glad people like you are still pushing the boundaries for this platform. This may have to be the next thing I do to my car.
You aren't going to want to do that for a daily driver. Better off with a good set of cams if you can swing that.

However, for a track car that lives above 3,500 RPM, this is great.
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Old 08-07-2014, 04:40 PM   #147
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You aren't going to want to do that for a daily driver. Better off with a good set of cams if you can swing that.

However, for a track car that lives above 3,500 RPM, this is great.
Bartender, I already have cams and pretty much everything else that is common done... (see my cam DIY guide http://forum.e46fanatics.com/showthr...124&highlight= ) while the car is daily driven, it is more track rat than commuter.

Loads and Loads of E36 guys run the M50 manifold on the street without missing the bottom end power that much. Hell I lost some bottom with the cams, at this point I figure why not go all the way. Help those cams with the job of getting this thing to breathe.
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Old 08-07-2014, 10:28 PM   #148
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All that money could of got you a rebuilt S54 motor. Not sure of price of conversions on a 5 speed though. I do like the idea of going with the larger intake runners but prefer stock air box to Cai just a sound.... BMW engineer's can design a good airbox. Post more dyno results
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Old 08-08-2014, 01:06 AM   #149
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Bartender, I already have cams and pretty much everything else that is common done... (see my cam DIY guide http://forum.e46fanatics.com/showthr...124&highlight= ) while the car is daily driven, it is more track rat than commuter.

Loads and Loads of E36 guys run the M50 manifold on the street without missing the bottom end power that much. Hell I lost some bottom with the cams, at this point I figure why not go all the way. Help those cams with the job of getting this thing to breathe.
Definitely do the m50 swap! Especially since you have cams and want more high end rip

Just like you said, let the cams make the head flow more air.
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Old 08-08-2014, 05:42 AM   #150
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The M50 loses no low end torque versus the m54.

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Old 08-08-2014, 08:36 AM   #151
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All that money could of got you a rebuilt S54 motor. Not sure of price of conversions on a 5 speed though. I do like the idea of going with the larger intake runners but prefer stock air box to Cai just a sound.... BMW engineer's can design a good airbox. Post more dyno results
You can't race an engine swapped car in many classes without being classed unlimited. Unless you have crazy money, you don't wanna try and swim with the sharks there.
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Old 08-08-2014, 08:40 AM   #152
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The M50 loses no low end torque versus the m54.

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Even with the loss of the DISA? That doesn't make sense.
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Old 08-08-2014, 10:11 AM   #153
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I think you need to read this thread from the beginning before stating that.

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Old 08-08-2014, 11:43 AM   #154
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I think you need to read this thread from the beginning before stating that.

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Don't worry, I had read the thread start to finish with much interest before I made that comment. Like I said, this is great stuff. I know you stated that you only see 5-7 ft/lbs lost under 3700 if everything else is optimized. That kind of power loss down low is going to be felt though, especially in stop and go where that kind of loss could be 10 percent or more of the power that the engine is making at 1000-2000 RPM.

Like you said, and I agree whole heartedly, for a car that lives above 3500 rpm, who cares? For those on the street its a little bit of compromise, just like for the e36 guys.(One that I think is entirely worth while) Either way, we would need a comparison dyno from very low rpm to see the difference down low. But if the car is only making 50 ft/lbs and is losing 7 thats a decent hit.
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Old 09-24-2014, 10:29 AM   #155
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I had another thought on why it could be that your are not seeing that same power as the other car with this manifold. Did he use a template like you did to port match or did he do it using dye/paint and the actual manifold. With variances in castings being a reality and using the template you did to port, the manifold ports may not perfectly match up to the head. It's at least very likely that a small part of the gains are simply from perfect port matching. Usually the tried and true old school way to do this is to put machinists dye/or paint on the head and then bolt down the manifold and port based on the markings left. This way you can custom fit the pieces to each other and eliminate manufacturing tolerances. Maybe yours isn't far off, but if you have the manifold off again during the winter I'd try painting up the head and bolting it on to see if there are any lips. Its obviously better if the manifold port is slightly smaller than the head port than it is the other way around.
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Old 09-24-2014, 12:33 PM   #156
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Nope. The power issue has been resolved.

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Old 09-24-2014, 03:16 PM   #157
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What class are you running in? I apologize if I missed it, I looked through the whole thread. Can't watch the video, though... =[
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Old 09-25-2014, 07:11 AM   #158
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Old 09-25-2014, 07:39 AM   #159
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Excuse the dirt, plan on having the head cleaned after.

My manifold when bolted up varied quite a bit in the relation of manifold ports to the heads ports.
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Old 09-25-2014, 08:02 AM   #160
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I think you're confused as to how I created the templates, but I'm glad your method worked for you.
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