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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 11-03-2012, 04:54 PM   #221
UdubBadger
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Car will be on the dyno again Monday pending an installation error on the shops part gets fixed. They damaged one of my o2 sensors so need to replace it.
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Old 11-03-2012, 04:55 PM   #222
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Video was just for sound comparison.
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Old 11-04-2012, 06:38 PM   #223
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When are they coming out ?
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Old 11-05-2012, 11:43 AM   #224
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+1 Also interested in the release date on these.
I might jump in on a set.
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Old 11-05-2012, 12:02 PM   #225
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He already said sometime in the beginning of the year.

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Old 11-06-2012, 08:56 AM   #226
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Old 11-07-2012, 07:09 PM   #227
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Need a set now, engine would be out this week

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Old 11-08-2012, 06:10 PM   #228
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It takes a whopping 15 minutes max to strap a car down and do a pull... how did they not have time? It's hard to tell how much of an impact a weeks time of driving, adaptive learning, weather change, etc will have. Also, is the test car really swapping exhausts prior to the re-test? That makes it even more apples to oranges...

Also, that's a very veeeerrryy slow pull. I feel sorry for your engine. I dyno'ed mine on a Mustang setting the weight as 2,500 lbs and aero to 10hp and even then it seemed to take forever. Did they have it set up for curb weight or a timed pull? We always had to set the weight to 70-80% of the actual curb weight otherwise the pulls were too long and too taxing...
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Old 11-08-2012, 06:20 PM   #229
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Quote:
Originally Posted by SH4DY View Post
It takes a whopping 15 minutes max to strap a car down and do a pull... how did they not have time? It's hard to tell how much of an impact a weeks time of driving, adaptive learning, weather change, etc will have. Also, is the test car really swapping exhausts prior to the re-test? That makes it even more apples to oranges...

Also, that's a very veeeerrryy slow pull. I feel sorry for your engine. I dyno'ed mine on a Mustang setting the weight as 2,500 lbs and aero to 10hp and even then it seemed to take forever. Did they have it set up for curb weight or a timed pull? We always had to set the weight to 70-80% of the actual curb weight otherwise the pulls were too long and too taxing...
Dyno and all is all done. I am just waiting on the info. Once I get them yall be first to know.

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Old 11-08-2012, 11:51 PM   #230
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Originally Posted by SH4DY View Post
It takes a whopping 15 minutes max to strap a car down and do a pull... how did they not have time? It's hard to tell how much of an impact a weeks time of driving, adaptive learning, weather change, etc will have. Also, is the test car really swapping exhausts prior to the re-test? That makes it even more apples to oranges...

Also, that's a very veeeerrryy slow pull. I feel sorry for your engine. I dyno'ed mine on a Mustang setting the weight as 2,500 lbs and aero to 10hp and even then it seemed to take forever. Did they have it set up for curb weight or a timed pull? We always had to set the weight to 70-80% of the actual curb weight otherwise the pulls were too long and too taxing...
we ran out of time because the shop closed at 6pm yet the car didn't get off the lift for the install until 7:15pm on the install day. Tech took a few too many smoke breaks during install so I had to pay the price (and sit there all day).

if all of that concerns you it shouldn't - you'd be seeing much more conservative gains in this case rather than some over stretched gains when they added the performance parts - not took them off. besides a tse-3 muffler and stock muffler aren't doing much performance wise anyway - the tse-3 was just welded behind the stock resonators. as for the adaptations - car wasn't driven at all as they bend one of my o2 sensors so I left it in the garage until I went back.

I don't work the dyno (either does Anthony). They do whatever they do because thats how they do it I suppose. They said they wanted a more accurate run in 4th gear so I let them do that instead of 3rd. I assume the weight has SOMETHING to do with the calculations of power and if it doesn't then whatever - it is a 60-120mph pull.
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Old 11-10-2012, 10:47 PM   #231
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Udub- On a Mustang chassis dyno if you use the "vehicle simulation" it uses the weight and the aero losses you input to calculate the load needed to be applied by the Eddy brake to simulate the acceleration of the vehicle as if it were on the road. Using timed runs or slightly overloading is good for tuning because knock events are more likely to register but in doing power pulls it's not really warranted. I operated a Mustang dyno for over two years and just wanted to shed some light on how they operate. I also don't like seeing cars abused unnecessarily...

Edit to clarify: They are correct in using fourth gear because it's the closest 1:1 trans ratio on a MT. They can speed up the pulls though...

I look forward to the results.

Last edited by SH4DY; 11-10-2012 at 10:51 PM.
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Old 11-10-2012, 11:16 PM   #232
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Old 11-10-2012, 11:34 PM   #233
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Originally Posted by SH4DY View Post
Udub- On a Mustang chassis dyno if you use the "vehicle simulation" it uses the weight and the aero losses you input to calculate the load needed to be applied by the Eddy brake to simulate the acceleration of the vehicle as if it were on the road. Using timed runs or slightly overloading is good for tuning because knock events are more likely to register but in doing power pulls it's not really warranted. I operated a Mustang dyno for over two years and just wanted to shed some light on how they operate. I also don't like seeing cars abused unnecessarily...

Edit to clarify: They are correct in using fourth gear because it's the closest 1:1 trans ratio on a MT. They can speed up the pulls though...

I look forward to the results.
Cool thanks for the info. I did ask the owner about it and he said he felt more comfortable using the correct SAE weight given to him on the book (whatever book that was) so they did it that way.

And to be fair we were tuning on these runs also.

Supposed to get the graphs emailed to me soon so ill post them up.
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Old 11-11-2012, 10:46 AM   #234
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Old 11-12-2012, 08:40 PM   #235
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Updates!
What this guy said...

I take it the O2's didn't get fixed?
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Old 11-13-2012, 04:42 PM   #236
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So Still no dyno?
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Old 11-13-2012, 04:49 PM   #237
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Old 11-13-2012, 08:23 PM   #238
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I need these, lol
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Old 11-13-2012, 08:44 PM   #239
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So Still no dyno?
trying to get the shop to send me the correct files. I got a zip file today but it was all text data and no graphs. He said I had to download the mustang software which I did, but it didn't show me anything with the files he sent.

I will say this shop has proven to me why they are going out of business... so inefficient.
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Old 11-13-2012, 10:43 PM   #240
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Originally Posted by UdubBadger View Post
trying to get the shop to send me the correct files. I got a zip file today but it was all text data and no graphs. He said I had to download the mustang software which I did, but it didn't show me anything with the files he sent.

I will say this shop has proven to me why they are going out of business... so inefficient.
I understand your frustration.
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