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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 07-21-2011, 06:25 PM   #121
aggieE46
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Do the HKS! I've heard good things!
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Old 07-22-2011, 07:07 AM   #122
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Drone or just louder?

If it is a drone that is around a certain RPM then you can use a noise canceling chamber to kill it. If it is just generally loud than you will need to do what you are saying. My car with a custom exhaust has a bad drone at 2,500 rpm, Since I have an x pipe it is a 125 Hz frequency that is the drone. I am in the process of making a noise canceling chamber that is tuned to cancel that frequency. I am going to make a post about how to diy it soon, it sounds complicated but is really simple.

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Cannot stand the noise level any more so I talked with UUC about their TSE3 system that I have. It is about the same sound as a set of headers. Basically it will take longer resonators in place of the existing ones to make it quieter. Can't go wider as there is not enough room between the two pipes. Apparently the longer the better. UUC is asking Corsa, the maker, about the exact resonator to install. I will try two first then if this is not enough I will install the 2nd pair for a total of 4 longer resonators. Then, as a last resort
will be longer mufflers.



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Old 07-22-2011, 07:41 AM   #123
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With my stock ZHP exhaust, it's just louder. I don't have any drone. Not sure what Jim is experiencing with the UUC exhaust but the TSE3 really isn't much more than some tubing with a tuned resonator - of course it's tuned for the stock manifolds and these MagnaFlow units may have changed the frequencies which come into play (I think this is exactly why the TSE3 is so bad when paired with catless headers).

I'll be very interested to see how you go about designing and building the noise cancelling chamber. You probably won't be able to effectively capture the sound change on video but see if you can get some before and after recordings anyway.
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Old 07-22-2011, 07:47 AM   #124
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When I had the Magnaflow cat-back with my cat-less headers I had a lot of drone...now I have Borla cat-back and still have some drone around 2000-2500 rpm's but the Borla sounds much better with cat-less headers than the Magnaflow, IMO.

Looking to switch to the Magnaflow headers this fall to solve the drone issue and quite the exhaust down a bit.

I'm interested to read more about this sound chamber!!
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Old 07-22-2011, 09:59 AM   #125
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The Magnaflow cat/headers are about the same sound as having headers with cats added because they both have straight through routing (critical aspect). The sound is especially loud when you do a brief (or longer) WOT and then also when cruising above 3K rpm it is a floorpan vibrating drone. UUC says that the TSE3 is designed for the stock header/cats only. I am waiting to hear what the Corsa tech people tell UUC.

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Old 07-22-2011, 10:06 AM   #126
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The Magnaflow cat/headers are about the same sound as having headers with cats added because they both have straight through routing (critical aspect). The sound is especially loud when you do a brief (or longer) WOT and then also when cruising above 3K rpm it is a floorpan vibrating drone. UUC says that the TSE3 is designed for the stock header/cats only. I am waiting to hear what the Corsa tech people tell UUC.

Jim
Then it doesn't sound like what I am working on would help you since it is general loudness over 3k.

John R.
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Old 07-22-2011, 10:39 AM   #127
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At least Rob didn't give you a speech on how headers are useless and make no power on an E46. No, your dyno chart is lying. NOPE, I'M NOT LISTENING!!!

I ran into the same issue. Rob didn't have any good advice for me, just told me my headers were junk.

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The Magnaflow cat/headers are about the same sound as having headers with cats added because they both have straight through routing (critical aspect). The sound is especially loud when you do a brief (or longer) WOT and then also when cruising above 3K rpm it is a floorpan vibrating drone. UUC says that the TSE3 is designed for the stock header/cats only. I am waiting to hear what the Corsa tech people tell UUC.

Jim
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Old 08-09-2011, 12:15 PM   #128
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Just thought I'd provide positive confirmation that these cats are indeed OBDII friendly. I recently checked the OBDII readiness monitors since I hadn't done this post install and all systems are indeed "ready".
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Old 08-10-2011, 11:04 AM   #129
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Nice!
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Old 08-12-2011, 07:31 AM   #130
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Swapped for a stock 330Ci muffler yesterday and the car is much quieter - my wife is now happy.

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Old 08-12-2011, 09:28 AM   #131
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Good to hear as I'm about to go the Magnaflow/cat/headers route with a stock exhaust on 330i.
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Old 08-12-2011, 09:11 PM   #132
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Swapped for a stock 330Ci muffler yesterday and the car is much quieter - my wife is now happy.

Jim
Just the rear section?
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Old 08-16-2011, 07:42 PM   #133
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Getting a baseline dyno tomorrow for the car. All that is on it at the moment is a BMW Performance Intake. Magnaflow headers are off to Swain Tech getting coated (White Lightning) but it will be a bit before getting them back as I am on the west coast. After install, I will dyno again with just the headers and intake which I'll post, sorry about the auto but we'll get some idea about gains. Should I get a tune before the 2nd dyno? Thanks Aggie for the reference, John gave me a deal. TxZHP04, hopefully this won't take too long.
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Old 08-16-2011, 09:42 PM   #134
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Should I get a tune before the 2nd dyno?
If your ultimate plans are to add FI, I wouldn't bother with a tune right now.
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Old 08-17-2011, 12:34 AM   #135
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Indeed, that is where I'm trying to arrive at, an ESS TS2 Supercharger but want to get as much prep as I can.. Thanks for the advice.
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Old 08-17-2011, 08:51 AM   #136
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Indeed, that is where I'm trying to arrive at, an ESS TS2 Supercharger but want to get as much prep as I can.. Thanks for the advice.
And when you get this SC, I suspect that it is a twin screw version, then I would like to talk with you about buying this "BMW Performance Intake" as it will be coming off the motor for the ESS TS2. I have the AA/2 SC ("turbo on a stick") and I would be interested to see if yours is different/better than a stock ZHP intake AND if it will even fit my car. Always looking for easy/cheap ways to get more HP.

Just curious.

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Old 08-17-2011, 09:31 AM   #137
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I will keep you first in mind. Although I've read of ZHP owners fitting this, plug and play, I have no idea if it would be better/different than what you have stock. On this base 330i the butt dyno told me the engine seemed more efficient/slightly smoother, more sensitive throttle response and wants to run to redline quicker, improved MPG but as I said, butt dyno......Looks really nice in the engine bay.
Is your car exhaust stock, post headers?
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Old 08-17-2011, 10:11 AM   #138
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And when you get this SC, I suspect that it is a twin screw version, then I would like to talk with you about buying this "BMW Performance Intake" as it will be coming off the motor for the ESS TS2.
The ESS TS SC'er kits are designed to utilize the stock intake so the kit doesn't include an intake of any sort. Unless coriolanus just wants to switch to something else (and I wouldn't recommend that he do that), he'll need to keep his BMW Performance intake for use with the SC'er.
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Old 08-17-2011, 09:14 PM   #139
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The ESS TS SC'er kits are designed to utilize the stock intake so the kit doesn't include an intake of any sort. Unless coriolanus just wants to switch to something else (and I wouldn't recommend that he do that), he'll need to keep his BMW Performance intake for use with the SC'er.
That's what lack of coffee will get me. Of course, I'll need that intake.....
Dyno'd car today and have the dynopression, about what I expected, I'll post when I have something to compare it to. The auto downshift to 3rd was perplexing to the guys at the acura/honda shop. Had to drive 3hrs. to Eugene. 185.18whp 173.55 mx torq. Dyno Jet, Auto Tranny GM360. Can't wait for headers.
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Old 08-18-2011, 10:00 AM   #140
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Then, obviously, I have not looked at a TS SC close enough as my first impression (wrong) was that the TS mounted directly to the intake ports.
I am an old V8 kind of geezer who thinks a SC is a 671 mounted on top of a V8. Now I need to learn about this "BMW Performance Intake" and whether it is worth the money (whatever that is). And where do you find one.

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