[Mote]

Hey everyone, as was discussed in the other thread, yesterday I dyno'd at Yimi Sport Tuning.
My mods:
PROcede v3.2
BMS DCI
Eisenmann exhaust
100 oct (full tank)

I'm pleased with the results of the PROcede, not just for sheer numbers but overall driving satisfaction and consistency. A lot of you know that I dyno'd at AMS a few months ago when I had a JB3 v1.1 (same mods only race gas mix that time). 375 whp 370 wtq.

Yesterday's dyno was at a higher elevation and judging by this JB3 owners dyno numbers HERE and nlakind's 310 whp number on JB3 1.22 I'd say the dyno seems to be dyno'ing a bit low.

Anyhow..here's my graph. Knock yourselves out dissecting the info presented.

Also excuse the quality. I captured the graph with my iPhone.

[enrita]

nice !

[MShao825]

Does seem a tad bit low, especially considering your JB3 dyno with the same mods. Still looks good though nonetheless

[Proper Motion LLC]

Originally Posted by mshao825

Does seem a tad bit low, especially considering your JB3 dyno with the same mods. Still looks good though nonetheless

And the JB3 was about 95 octane? Vs these runs with 100 octane

But all dyno's read differently

[NinetyEight740]

not horrible numbers... Could be better...

[OpenFlash]

Originally Posted by NinetyEight740

not horrible numbers... Could be better...

The two similarly modified jb3 cars made 300-315whp that same day on pump gas. Dyno reads a bit differently than other dynos given the elevation and calibration.

Shiv

[Humble335i]

Originally Posted by shiv@vishnu

I know I'm going to get flamed but here goes..
-The big dip in the midrange (~4500rpm) is a throttle closure event
-The little dips above that is knock retard

Shiv

Do you think that applies to this dyno run as well?

[PaulBailey@ltbmw]

Very nice dyno!

[5soko]

Originally Posted by Humble335i

Do you think that applies to this dyno run as well?

Yea, i do see a small dip right, on 2 of the runs at least, i wouldnt say its a smooth run ahahaha.

[OpenFlash]

Originally Posted by Humble335i

Do you think that applies to this dyno run as well?

Where is your graph?

Shiv

[Humble335i]

I don't have a tune so haven't done a dyno run. Is that required to get an answer?

A lot is being made of timing advance/retard and throttle plate closures and as I am in the market for tune, potentially anyway, I'd like to know what makes the two dyno runs so different because frankly they don't look that different to me.

[Mrbangis]

whats the hp on stock 335 like when dyno'd?

[Vince@ V K Motorwerks]

Add an FMIC and see those numbers shoot up!

[MShao825]

Originally Posted by Vince@ V K Motorwerks

Add an FMIC and see those numbers shoot up!

+1

[Turkishexpress]

Originally Posted by 5soko335i

Yea, i do see a small dip right, on 2 of the runs at least, i wouldnt say its a smooth run ahahaha.

Yep as I mentioned on the JB3 thread if both of the smoothing factors were equal, the dynos would look even more similar.

[OpenFlash]

Originally Posted by Humble335i

I don't have a tune so haven't done a dyno run. Is that required to get an answer?

A lot is being made of timing advance/retard and throttle plate closures and as I am in the market for tune, potentially anyway, I'd like to know what makes the two dyno runs so different because frankly they don't look that different to me.

I'm sorry. I misunderstood your question. No, there is no evidence of throttle closure in this dyno result. You can tell this by the absence of longer duration dips that usually occur in the midrange. Same goes for knock retard activity but that is expected given timing control and race gas.

The differences between v3 and jb3 graphs are pretty obvious as the jb3 cars usually tend to be more inconsistent with more evidence of DME protesting. This has become even more of the case recently. You can compare the results of motes car to the two other jb3 cars dyno that same day.

Shiv

[OpenFlash]

Originally Posted by 5soko335i

Yea, i do see a small dip right, on 2 of the runs at least, i wouldnt say its a smooth run ahahaha.

Are you being serious? I really can't tell these days

Shiv

[Humble335i]

I do see more variation on the JB3 dyno but don't the differences in the CF account for at least part of that? I've never had my car dyno'd so I'm just speculating.

I'd have thought that big differences in CF would skew the data points particularly when trying to compare a dyno run made in FL with runs made in CA. Just don't see how anyone can point at a run and say this is caused by throttle plate closures and knock and then look at another chart taken 2500 miles away with similiar dips, albeit not as frequent, and say that those aren't caused by the same thing when the scale isn't the same.

The more I read these forums and the posts on them the more confused I get.

[OpenFlash]

Originally Posted by Humble335i

I do see more variation on the JB3 dyno but don't the differences in the CF account for at least part of that? I've never had my car dyno'd so I'm just speculating.

I'd have thought that big differences in CF would skew the data points particularly when trying to compare a dyno run made in FL with runs made in CA. Just don't see how anyone can point at a run and say this is caused by throttle plate closures and knock and then look at another chart taken 2500 miles away with similiar dips, albeit not as frequent, and say that those aren't caused by the same thing when the scale isn't the same.
The more I read these forums and the posts on them the more confused I get.

Could you specifiy/specify which dyno results you are referring to? I'll be happy to explain how to interpret dyno results by the shape of their curves and the progression of the tune, run after run. It's pretty straight-forward.

Shiv

[RiXst3r]

Originally Posted by shiv@vishnu
I know I'm going to get flamed but here goes..
-The big dip in the midrange (~4500rpm) is a throttle closure event
-The little dips above that is knock retard

Shiv

Originally Posted by Humble335i

Do you think that applies to this dyno run as well?

See attached file....

Personally, and I am no expert, but I do not see any of the same problems... so no, I don't think they apply...

I took the liberty of overlaying the HP curve (it had no tq curve on the graph for us to use) from the jb3 1.22 dyno here:
http://www.e90post.com/forums/showthread.php?t=201636
It is the one that you quoted shiv talking about.

I took that, lined up the runs as best as possible in photoshop, and then highlighted the jb3 run so you can see it better and compare.

You can do the same if you wish... obviously this is only for a "visual" comparison, because the scale very well may be off, although, its probably pretty close.

Compare the HP curve only... you can see that the dips are not the same. The v3 graph looks pretty smooth to me, no large dips or spiking.

[Mike@N54Tuning.com]

Also don't try to compare dyno curves on 91 octane to those on straight 100 octane. The straight 100 octane curve will always be much smoother as the ECU can run full tilt timing advance!

[OpenFlash]

Originally Posted by Mike@N54Tuning.com

Also don't try to compare dyno curves on 91 octane to those on straight 100 octane. The straight 100 octane curve will always be much smoother as the ECU can run full tilt timing advance!

A pump gas instead of race gas wont cause midrange throttle closure. That has to do with inappropriate boost DC mapping. Just log absolute throttle yourself with an obd2 logger and see for yourself. We're dealing with two different problems here. Let's not confuse the two.

Shiv