E46 Dyno Thread

Originally Posted by stosh1

What's up everybody!? Alright, thought we'd give it one more go on the dyno just for good measure...before I tear it back down again. We pulled a little more fuel up top and played around w/the timing a little bit too, and well...I think the results speak for themselves!?!? We managed to eek out a few more ponies, and torque is now up to 275ft lbs. The car is making 300HP by around 6,000ish rpms and then hitting 360+HP @ 7,700rpms and holding it all the way to 8,500rpms. The car is running very, very well!

I'm a little late to this thread, but what are the mods on this car?

Originally Posted by GG///M3

I'm a little late to this thread, but what are the mods on this car?

You can click on the earlier pages and go back to see what has been posted even years ago.

Originally Posted by GG///M3

I'm a little late to this thread, but what are the mods on this car?

Originally Posted by Stinger9

You can click on the earlier pages and go back to see what has been posted even years ago.

Uuum, my build was just completed this spring, so not sure what you're referring to Stinger9???

Major mods are a mildly re-worked cylinder head, Schrick cams, CSL intake, & a custom Alpha-N tune.

Small video of my car on a dyno in November 2012. This was to test the effects of a Shark Injector plus Evosport underdrive pulleys, and the result was a gain of 9.5 peak HP at the wheels. Same dyno used 2 years earlier. The ambient temp was much cooler for the 2nd test, but the SAE correction should account for that.
Edit: Went from 189.7 to 199.4 RWHP. aFe intake installed but not yet tested.

Next: install CAI and dyno test again in November 2013!

Name: fsmtnbiker
Car/Engine: 01 325i / M52TUB28 (yes, really)
Mods: Conforti Shark Injector software, UUC TSE3 Exhaust
Peak numbers:174whp/178wtq
Dyno type: Dynojet

^That's about the same power as my car currently has. Details?

It's kinda a weird car. The previous owner had a 2.8L swapped in to get a little more power (???) so the motor is a clean, lower miles bottom end with a fresh head... But, I think, running all the M54B25 engine management. I'm not sure which intake manifold it has, I'm assuming the M54B25 since it has the electronic throttle body.

It feels to me like something isn't quite right with the VANOS/Cam Timing, but I haven't had time to go back in and check. It doesn't throw any codes but it is slooooow as the dyno shows (it doesn't help that my E36 has 100whp/80wtq more).

I think, basically, that I would like it to have stock ZHP power. It feels so flat above 4k after the DISA switch. I'm hesitant to do headers since it makes this exhaust sound so awful (and I really do like the sound now.) It's just a new daily for me, so I'm not likely to do much to it. Maybe some pullies (the alternator is doing some... interesting things) and an intake of some sort to replace the stock airbox.

You should flash the 330 software on to it and upgrade to the 330 intake system. Manifold, DISA, TB, Intake boots and the MAF can be had for under 400 total if you look hard enough.

Originally Posted by fsmtnbiker

It's kinda a weird car. The previous owner had a 2.8L swapped in to get a little more power (???) so the motor is a clean, lower miles bottom end with a fresh head... But, I think, running all the M54B25 engine management. I'm not sure which intake manifold it has, I'm assuming the M54B25 since it has the electronic throttle body.

It feels to me like something isn't quite right with the VANOS/Cam Timing, but I haven't had time to go back in and check. It doesn't throw any codes but it is slooooow as the dyno shows (it doesn't help that my E36 has 100whp/80wtq more).

I think, basically, that I would like it to have stock ZHP power. It feels so flat above 4k after the DISA switch. I'm hesitant to do headers since it makes this exhaust sound so awful (and I really do like the sound now.) It's just a new daily for me, so I'm not likely to do much to it. Maybe some pullies (the alternator is doing some... interesting things) and an intake of some sort to replace the stock airbox.

I would take it to a tuner, explain what was done, and have them make an appropriate calibration

Keep in mind it is still a 2.8. I wouldn't expect much more than 190whp

Are you 100% sure the previous owner wasn't blowing smoke out of his ass? i can't see why someone would swap a 2.8 in to an MS43 car with the 3.0 being available.

Originally Posted by TerraPhantm

I would take it to a tuner, explain what was done, and have them make an appropriate calibration

Keep in mind it is still a 2.8. I wouldn't expect much more than 190whp

Are you 100% sure the previous owner wasn't blowing smoke out of his ass? i can't see why someone would swap a 2.8 in to an MS43 car with the 3.0 being available.

Unfortunately, I am 100% sure of what was done. I used to work at the shop that did the work, and now work for the previous owner... And have the shop bill for all the work that was done ($$$$$).

I really don't care all that much about more power. It would be nice but in reality I have a "fast" car when I want to drive it. This is strictly a DD and it gets good enough mileage that I am probably not going to mess with it. Maybe flashing up to the 330 stuff with the larger TB/MAF/IM as was suggested above, eventually.

I have no idea why they went with a 2.8 instead of the 3.0 - It's dumb in my book too (but I got such a good deal on the car that I couldn't pass it up.)

Completely unrelated:

Has anyone ever swapped an E36 exhaust into an E46? The head bolt pattern is the same, the underbody isn't that different. I'm wondering if it would be worth some power (I have more than one full E36 exhaust laying around.) It would be interesting to see how much power could be gained simply by removing those ridiculous factory manifolds and replacing them with... less ridiculous factory manifolds (or something aftermarket.)

Originally Posted by fsmtnbiker

Has anyone ever swapped an E36 exhaust into an E46? The head bolt pattern is the same, the underbody isn't that different. I'm wondering if it would be worth some power (I have more than one full E36 exhaust laying around.) It would be interesting to see how much power could be gained simply by removing those ridiculous factory manifolds and replacing them with... less ridiculous factory manifolds (or something aftermarket.)

Hah! Chris let me know if you find anything out, I'm working on a similar project... (E36 shorty headers with a cat added after a collector for my ZHP)

I'm not totally sure the shorties will clear the engine mount arm, but there's a $40 M54B30 nearby, and the arm is $30, so I might just buy those and find out before I try it in my car.

Name: satx e46
Car/Engine: E46 M54B25
Mods: injen filter using stock pipe/hose, muffler delete
Dyno type: Dynojet
Peak numbers: 174whp / 121 ft-tq



[YOUTUBE]

Name: Aaron
Car/Engine: E46 M3 s54
Mods: stainless steel muffler (Megan racing)
Peak numbers: 310whp/252wtq
Dyno type: dynomax
-MAP IN PROFILE-

Sorry couldn't post map in post but its in profile pics. Dynoed in full sun closed hood in 85+ degree weather and still put down good numbers. JAILBREAK TUNING located in westminister CA is the responsible party if you live in the surrounding area give the boys a call

Name: Mike
Car/Engine: 2004 330i ZHP
Mods:
Baseline: BMW Performance intake
Tuned: Bimmerbrakes headers, Magnaflow exhaust, dyno tune
Peak numbers: 231whp/230wtq
Dyno type: Dynodynamics

The first thumb is the baseline run, with just a BMW Performance intake installed. The second comparison plot is after the installation of the headers and exhaust, and a dyno tune.

Originally Posted by mko9

Name: Mike
Car/Engine: 2004 330i ZHP
Mods:
Baseline: BMW Performance intake
Tuned: Bimmerbrakes headers, Magnaflow exhaust, dyno tune
Peak numbers: 231whp/230wtq
Dyno type: Dynodynamics

The first thumb is the baseline run, with just a BMW Performance intake installed. The second comparison plot is after the installation of the headers and exhaust, and a dyno tune.

nice numbers. are the dynodynamics the ones that tend to run a little inflated?

Originally Posted by Steven747

nice numbers. are the dynodynamics the ones that tend to run a little inflated?

numbers mean nothing, lol.

I heard dyno dynamics dynos reads low. idk I was keeping up with 330i's.


I think dyno jet is the one that reads high. But then again you can get different readings different days with the same car...

Name: Redline
Car: 99 323i 5mt 191,000 miles
Engine: m52tuB25
Mods: Dinan CF long tube CAI, Headers, No cats, custom exhaust (stock 1st resonator, 3" mid pipe, borla xs muffler) custom dyno tune
Dyno: Dyno Dynamics (reads low compared to dynojet according to tuner)
Max Horsepower: 182.4 at 6,000 RPM'S
Max Torque: 170 at 4,700 RPM's


Sent from BimmerApp mobile app

Originally Posted by Steven747

nice numbers. are the dynodynamics the ones that tend to run a little inflated?

no they dont usually but if the operator has not used shootout mode they can enter in a scale factor and fudge it to get any number you want. if you see a dyno dynamics dyno without shootout written on it you never know what is going on in the background and it is worthless for comparison with other graphs. shootout mode locks in several variables like the ramp rate, correction factors so the operator cant fudge it unless he puts the temp probe in a bad spot but even then it is all printed on the graph to see if it is suspect.

some places even say they can correct dynodynamics to read dynojet. this is a complete wank and just pain BS, all they are doing is fudging the numbers to make the customer happy there is not a fixed correction to get from one to another. if you want a dynojet number well go to a place with a dynojet......

fvck numbers, line em up