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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Chicago 335i Dyno Day Results



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      06-15-2008, 09:29 PM   #23
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Quote:
Originally Posted by e90AW335i View Post
Don't just use the datalogs on V2 to see what boost you are running. If you are seeing a plateau of 14.7psi on the boost logs you are probably running more than that. There is an issue with V2 and the data logging software, this issue is addressed and fixed with V3....

Get a boost gage and double check....
I'm confused...I thought this issue was resolved. Plus, didn't Shiv argued with folks seeing spikes at the point where the gage was typically hooked up and didn't believe it was an issue. If this is true...how is it that V2 is a quality product? If spikes are still an issue with V2 what is Shiv doing to fix this problem?

Were not the people that had spike issues those who had installed DP's or Catless DP's?
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      06-15-2008, 09:46 PM   #24
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Quote:
Originally Posted by LambOfGod View Post
I'm confused...I thought this issue was resolved. Plus, didn't Shiv argued with folks seeing spikes at the point where the gage was typically hooked up and didn't believe it was an issue. If this is true...how is it that V2 is a quality product? If spikes are still an issue with V2 what is Shiv doing to fix this problem?

Were not the people that had spike issues those who had installed DP's or Catless DP's?
This issue is widely known with V2, V3 addresses this and datalogs boost correctly....
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      06-15-2008, 09:53 PM   #25
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Unbelievable!

Is the new upgraded map for V2 going to fix this problem Shiv?
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      06-15-2008, 09:58 PM   #26
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Quote:
Originally Posted by LambOfGod View Post
I'm confused...I thought this issue was resolved. Plus, didn't Shiv argued with folks seeing spikes at the point where the gage was typically hooked up and didn't believe it was an issue. If this is true...how is it that V2 is a quality product? If spikes are still an issue with V2 what is Shiv doing to fix this problem?

Were not the people that had spike issues those who had installed DP's or Catless DP's?
With v2, there was a resistor bridge in the green loom which resulted in signal coloration at high rpm (above 5500rpm). This did NOT cause a boost spike or any boost-related instability. It simply meant that, at high rpm, boost readings in datalogs were 1-2psi lower than actual boost readings. If you leave the default settings alone, you will never run into the problem of running more boost than you want. If you following the directions with regards to User Torque adjustment, you will not run more boost than you want. If you have a boost gauge installed, you can confirm that this is the case.

As for boost spiking, running any higher boost will result in higher boost spikes since steady state boost level and spike amplitude is directly related. The important thing is keeping the duration of the spike small (under 0.25s). This is true regardless of what tune you run. And if you are running a tune that bypasses a solenoid, expect to see even larger boost spikes coupled with some oscillation.

With v3, added features will controlled not only boost level but the rate of boost rise. We also implemented logic that predicted boost spike behavior and took preventive measures against it. This wasn't in response to a "problem" with v2. It was just a sin of omission. One I believe that every engine tuning option had. We were just the only ones to provide datalogging software so it could be seen/recorded. I suspect there is a reason that no one else provides datalogging software for their tunes.

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      06-15-2008, 10:10 PM   #27
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Yeah and also there arent any other competitors that charges 1495 for a tune!!!
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      06-15-2008, 10:15 PM   #28
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Yeah and also there arent any other competitors that charges 1495 for a tune!!!

Yep, that price is out of control! Anything over $700 should be considered robbery.
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      06-15-2008, 10:41 PM   #29
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Anyone else notice how close all the tunes on the list seem? Well at least TQ values.

I am really wondering if +/-25hp variation makes any marked difference in real life on road true performance when the TQ values seem so close to each other. At usual highway speeds up to maybe 120mph, any big difference between the various tunes?
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      06-15-2008, 10:45 PM   #30
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Very nice. The Dinan Stage II numbers appear to be very impressive.
+1 its holding its own for a over priced under tuned flashed
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      06-15-2008, 11:26 PM   #31
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Originally Posted by vbmw335 View Post
335i (v2.02 1/26 map,90% tq settings) my car (93 oct) -
HP: 327 , TQ:382
is this typical for a V2 car (everything else stock)??
It all depends on dyno testing conditions. With inadequate cooling, you'll see lower numbers (320-330whp). With good cooling, you can see more (340-350whp). This applies even more so with v3 since the aggression of the tune (boost and timing) is dependent upon intake air temp. v2 doesn't have this feature and relies upon the factory ECU's IAT-based boost compensations. They work in theory (hotter, less dense air results in more boost) but in application, they aren't ideal given octane contraints.

Not sure why your torque is so high though. 382lbft seems quite high for an otherwise stock car.

Vince-- You running a full v3 set-up with IAT input?

Shiv
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      06-16-2008, 10:12 AM   #32
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Originally Posted by CubanJJ09 View Post
+1 its holding its own for a over priced under tuned flashed
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      06-16-2008, 11:25 AM   #33
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Quote:
Originally Posted by shiv@vishnu View Post
It all depends on dyno testing conditions. With inadequate cooling, you'll see lower numbers (320-330whp). With good cooling, you can see more (340-350whp). This applies even more so with v3 since the aggression of the tune (boost and timing) is dependent upon intake air temp. v2 doesn't have this feature and relies upon the factory ECU's IAT-based boost compensations. They work in theory (hotter, less dense air results in more boost) but in application, they aren't ideal given octane contraints.

Not sure why your torque is so high though. 382lbft seems quite high for an otherwise stock car.

Vince-- You running a full v3 set-up with IAT input?

Shiv

I am not runing the IAT setup and running the the 5-22 stage 2 beta map. Still waiting on the PnP harness. Can you PM me on when you believe I will have it.

Thanks.
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      06-16-2008, 04:16 PM   #34
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Quote:
Originally Posted by shiv@vishnu View Post
It all depends on dyno testing conditions. With inadequate cooling, you'll see lower numbers (320-330whp). With good cooling, you can see more (340-350whp). This applies even more so with v3 since the aggression of the tune (boost and timing) is dependent upon intake air temp. v2 doesn't have this feature and relies upon the factory ECU's IAT-based boost compensations. They work in theory (hotter, less dense air results in more boost) but in application, they aren't ideal given octane contraints.

Not sure why your torque is so high though. 382lbft seems quite high for an otherwise stock car.

Vince-- You running a full v3 set-up with IAT input?

Shiv

Shiv,
I am seeing boost levels around 15 psi and spikes (1 sec) around 20 psi during 2nd and 3rd gear shift. Is there something I should be concerned of at 382 lbft of torque? Should I turn down the TQ values below 90%?
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      06-16-2008, 08:03 PM   #35
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Quote:
Originally Posted by Vince@ V K Motorwerks View Post
I am not runing the IAT setup and running the the 5-22 stage 2 beta map. Still waiting on the PnP harness. Can you PM me on when you believe I will have it.

Thanks.
Then you're not running v3 PnP harnesses start to ship out tomorrow. 50 this week. 50 more next week. And 50 more after that. I don't know where you are in line but it's coming.

vbmw335-- you have PM.

Shiv
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      06-16-2008, 08:47 PM   #36
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Quote:
Originally Posted by shiv@vishnu View Post
Then you're not running v3 PnP harnesses start to ship out tomorrow. 50 this week. 50 more next week. And 50 more after that. I don't know where you are in line but it's coming.

vbmw335-- you have PM.

Shiv
I think I hear a VIOLIN playing!!! lol Heard this before........
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      06-16-2008, 10:24 PM   #37
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Quote:
Originally Posted by shiv@vishnu View Post
Then you're not running v3 PnP harnesses start to ship out tomorrow. 50 this week. 50 more next week. And 50 more after that. I don't know where you are in line but it's coming.

vbmw335-- you have PM.

Shiv
Then what should I expect with the v3 over my current setup?
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