[APac_555]

Originally Posted by hotrod2448

I think those dips are from the map not being fine tuned and not knock. Shiv said this was not the final version of the map and he felt there was still something like another 20hp left in there.

If the smoothing factor was set to '0' i would agree that the map just needs fine tuning....but those are not the facts.

Those dips are 15-25whp. To me it looks like knock and the factory ecu is pulling timing. Thats why i asked to see a video of the dyno run..... If a/f and boost were also posted it could shed light on what those dips could be. I would also love to see the raw SAE/0 smoothing graphs......

I fully understand that Vishnu is still in development stages of its ecu mapping/customization, maybe Shiv cannot access all the maps that are needed to make a nice smooth curve......

im just surpised no one has talked about these issues....instead ppl would rather post OT crap.

[jpsimon]

like you said yourself "still in development". This thread was only to show that they hit 400whp. I'm not surprised at all no one has complained about any issues with the map. It's not like this map is going to be released to the public as is

[Dr_Dirt]

Originally Posted by garyhgaryh

The work was all done by yours truly.

1800 HKS turbo kit (NEW)
120 Apexi Boost controller (NEW)
250 HKS downpipe (NEW)
120 FCON w/fuel cut defenser (USED)
200 1pc Aluminum driveshaft (built by a guy in the bay area)
400 Larger spearco IC (used)
----------------------------------
$2890

Add in HKS metal HG $120 and new rod bearings for Jay Marks Toyota in Texas (I can't remember the price - I believe it was $80/set genuine factory toyota

+120 HKS metal HG
+ 80 Rod bearings
-----------------
$3190.

It helps to do work yourself. I bought most of the expensive HKS stuff from a guy in Canada (Reg Riemer) and my mail order Toyota dealer of choice was Jay Marks Toyota in Texas.

$3190 is an amazing price.
Did you tune it yourself? In the past I have spent > $300 for dyno time to get a laughable tune on my Mitsu 3000.
I would also think starting on a NA car and then making it turbo that you would need to do more things like a fuel pump and injectors to get 400hp at the wheels.

[normtrum]

Originally Posted by APac_555

Sorry i havent the time to read through 17 pages of internet bickering.....

Has anyone mentioned the dips that occur @ 3.5k, 4.1k, and 4.9k ??? Does the N54 engine have a factory knock sensor?

Do you have any videos of the dyno run? Can the SAE / '0' smoothing graph be posted along with a/f and boost curves?

I know Vishnu is still in the development stages of its ecu tuning, but that powerband does not look smooth at all especially with a smoothing factor
of '5'....

::runs and hides in teh corner::

I'm not sure I've every seen anyone take a video of their dyno run....maybe someone has, but it's just not really needed.

Originally Posted by jpsimon

like you said yourself "still in development". This thread was only to show that they hit 400whp. I'm not surprised at all no one has complained about any issues with the map. It's not like this map is going to be released to the public as is

Exactly...it was just to show what the capabilities of the car were, not to try and sell an upgraded map, imo.

[APac_555]

Originally Posted by normtrum

I'm not sure I've every seen anyone take a video of their dyno run....maybe someone has, but it's just not really needed.

There are a lot of tuners on the subaru forums that will take a video of the last dyno run. I guess its just not the norm....

A video would give some sort of inclination of what type of events occured during those dips. If the video showed massive amounts of fuel being dumped in the cylinders (you can see the effects of massive amounts of black unburnt fuel coming from the exh.), it would definitely lead to knock/det.

A video would also record the pitch of the engine during the run, it could sound really healthy or it could sound like it was really being pushed...

Well thats neither here nor there, since there is no video....

As a former Vishnu customer i wish Shiv the very best with his new platform

[revah2]

Originally Posted by jcarlucci1

From the dynos Ive seen here, xede isnt putting out anywhere NEAR that kind of power..even with exhaust/downpipes

just wait until nov 30th.

[OpenFlash]

FWIW, the dips were caused by boost fluctuations. Not knock retard.

Shiv

[Nikolas]

Originally Posted by shiv@vishnu

FWIW, the dips were caused by boost fluctuations. Not knock retard.

Shiv

Who are you calling a retard?...........................J/K

[wiltshp]

Originally Posted by shiv@vishnu

FWIW, the dips were caused by boost fluctuations. Not knock retard.

Shiv

Why was the boost fluctuating? Will this be ironed out?

[OpenFlash]

Originally Posted by wiltshp

Why was the boost fluctuating? Will this be ironed out?

We were trying to limit torque which would have otherwise gone up to 450+lbft. And i was trying to do this using a new closed loop feature we are working on. And as with all closed loop systems, oscillations naturally occur if the derivative, integral, etc,. values are dialed in *perfectly*. And this only represents half a day of tuning

shiv

[jpsimon]

Originally Posted by shiv@vishnu

FWIW, the dips were caused by boost fluctuations. Not knock retard.

Shiv

[wiltshp]

Originally Posted by shiv@vishnu

We were trying to limit torque which would have otherwise gone up to 450+lbft. And i was trying to do this using a new closed loop feature we are working on. And as with all closed loop systems, oscillations naturally occur if the derivative, integral, etc,. values are dialed in *perfectly*. And this only represents half a day of tuning

shiv

Thanks for the quick response Shiv. Is it feasible to say that after MUCH testing and R&D that if it is determined the stock drivetrain will hold up, that maybe you will leave the boost on?

[garyhgaryh]

Originally Posted by Dr_Dirt

$3190 is an amazing price.
Did you tune it yourself? In the past I have spent > $300 for dyno time to get a laughable tune on my Mitsu 3000.
I would also think starting on a NA car and then making it turbo that you would need to do more things like a fuel pump and injectors to get 400hp at the wheels.

Oh darn, I did forget about the Walbro 255l/h fuel pump I put in so add $100 (I paid less than since I got it at wholesale, but that's the going rate now).
I did this with the stock injectors and, yes, I'm probably at the edge.

I pretty much tuned it myself on $50 dyno runs. The AF was good. I wouldn't expect any Joe schmo to be able to do this project for the price I paid.

I'm sure there are other incidental expenses, but I was talking mainly the total on the bolt ons. In anycase, it's pretty close to $3k .

BTW, this is a turbo car to start with. It's not an NA to turbo conversion,
thus the reason why it wasn't a huge bill for me to get that much HP.

Gary

[jerrym]

Amazing Numbers.
congrads.

[335iheLLraiseR]

Originally Posted by shiv@vishnu

We were trying to limit torque which would have otherwise gone up to 450+lbft. shiv

[M&M]

Originally Posted by shiv@vishnu

FWIW, the dips were caused by boost fluctuations. Not knock retard.

Shiv

Yeah, pretty plain to see that those type of rounded waves are boost-control related & not dett.

[hotrod2448]

Originally Posted by APac_555

If the smoothing factor was set to '0' i would agree that the map just needs fine tuning....but those are not the facts.

Those dips are 15-25whp. To me it looks like knock and the factory ecu is pulling timing. Thats why i asked to see a video of the dyno run..... If a/f and boost were also posted it could shed light on what those dips could be. I would also love to see the raw SAE/0 smoothing graphs......

I fully understand that Vishnu is still in development stages of its ecu mapping/customization, maybe Shiv cannot access all the maps that are needed to make a nice smooth curve......

im just surpised no one has talked about these issues....instead ppl would rather post OT crap.

Looks like your "facts" are more like opinions.

[APac_555]

Originally Posted by M&M

Yeah, pretty plain to see that those type of rounded waves are boost-control related & not dett.

If a boost curve was included in the dyno sheet it would be bluntly obvious....with a smoothing factor of 5 they sure are a lot more rounded than they really are.

Originally Posted by hotrod2448

Looks like your "facts" are more like opinions.

Thanks for your insight. kthxbai

I find it comical that all im trying to do is help the BMW community and i just get flamed. If i never raised a question, shiv would have never shared the facts. Yes i was wrong about the dips not being det. (mainly because not all the information was given ie boost curves, a/f ratios, SAE unsmoothed dyno data)

But what if it really was det? It probably would have been brushed under the carpet....The "wow a BMW with 400whp bandwagon" people are too busy filling this thread with 17 pages of nonsense.

Am i wrong in asking respectable questions on the posted dyno curve? It seems it would have been better for me not to open my mouth at all.

It is an amazing feat for Shiv to hit 400whp on his dyno with a stock 335....it really makes me think more and more about the n54 engine. Now if he can iron out his curves to produce a more smooth power delivery (which im confident he can, maybe not now but later down in development) i would be completely satisfied. I am not as satisfied with the posted curves, thus my questions.....

Im out like a fat bicth in dodgeball.

[B00sted335BMW]

Originally Posted by shiv@vishnu

We were trying to limit torque which would have otherwise gone up to 450+lbft. And i was trying to do this using a new closed loop feature we are working on. And as with all closed loop systems, oscillations naturally occur if the derivative, integral, etc,. values are dialed in *perfectly*. And this only represents half a day of tuning

shiv

Since this is a closed loop system and you are trying to tune it to that, will the V2 have any problems with a BOV then?????

[OC Guy]

Originally Posted by APac_555

It is an amazing feat for Shiv to hit 400whp on his dyno with a stock 335....it really makes me think more and more about the n54 engine. Now if he can iron out his curves to produce a more smooth power delivery (which im confident he can, maybe not now but later down in development) i would be completely satisfied. I am not as satisfied with the posted curves, thus my questions.....

Im out like a fat bicth in dodgeball.

stock 335?

[335ie90socal]

one word: WOW

[APac_555]

Originally Posted by OC 335i

stock 335?

sorry chipped and a catback.....basically stock.

Stock cats, diverter valves, intake...... :