[High Flier]

Originally Posted by mdai245

Looks like numbers are in line with dinan. Im interested in why the plot has all that noise though

I've never been on a dyno before. Is it done in one gear or the full set of gears? If so, wouldn't the noise be the shift points?

My observations:
1. MPPSK doesn't seem to be much higher than what I already expected from the stock B58. Dynan Stage 1 appears to be much more of a boost.
2. The torque drop-off is noticeably sharper than I saw from the BMW MPPSK specs.

[ishowerinjager]

Not sure I trust this dyno.... anyone else have thoughts?

The deltas seem about right though

[Beek]

Originally Posted by ishowerinjager

Not sure I trust this dyno.... anyone else have thoughts?

The deltas seem about right though

Loving the Delta's and I know that is the important part ... but I do feel the numbers are too low. Most stock dyno's are coming in around 330 WHP and MPPSK should take them to 365 WHP or so.

OP, is your 440 xDrive? Might account for some lower than expected numbers.

[CCnYiting]

Originally Posted by Beek

Loving the Delta's and I know that is the important part ... but I do feel the numbers are too low. Most stock dyno's are coming in around 330 WHP and MPPSK should take them to 365 WHP or so.

OP, is your 440 xDrive? Might account for some lower than expected numbers.

Mine is 2017 440i Xdrive with MPPSK!

[riskmaker76]

Dont go by the actual numbers as each Dyno unfortunately will yield different results. Focus on the Delta.

With that said, yes these numbers start off very low compared to others who have dynoed a 340 with and without MPPSK

[EBIIMKKP]

Originally Posted by CCnYiting

About the shifting delay, I just want to make corrections, it's not really delay, it just not smooth as without Stage 1 ! I'm 100% satisfied with this product! Also I really do feel the extra hp and torque!

Awesome! Tnx for sharing

[CCnYiting]

Originally Posted by riskmaker76

Dont go by the actual numbers as each Dyno unfortunately will yield different results. Focus on the Delta.

With that said, yes these numbers start off very low compared to others who have dynoed a 340 with and without MPPSK

You are right, when the car at the dyno, when the number comes out, I feel disappointed also with my 440i xdrive, maybe mine convertible is heavier, also 4 wheel drive, the lines at the dyno chart shows the drop when pulls, coz of the 4 wheel system activities, that's what the tuner told! Seriously, I have no clue about dyno, just trust the deltas! At least the number shows the wheel hp, oem spec shows the crank power, isn't it? Please correct me if I'm wrong!

[CCnYiting]

Base on the chart, at lease it shows the difference between oem stock MPPSK and dinantronic Stage 1, no matter how's the number, but it still shows the difference! That's what everybody in forum wants to know!

Back to the topic, $1400US cost me $2100 cnd include shipping, import charges and taxes, it worth it for me for this power gain with keeping factory warranty! Car is not cheap not a civic or corrola, even STI, warranty is a must for a bimmer, am I right, everyone who owns a BMW?

Stage 1 is done on my car, I hope dinan will get the stage 2 release soon, coz I got my downpipe and intake ready for it!

[FeelinBlessed]

Deltas look very good. I agree with others on overall numbers being low. Disappointing

[BASELINE]

Is no one else noticing that dramatic nose dive in power after 6000rpm on the Dinan tune? It's like the car hit a wall. I'm not loving it McDonalds...not at all.

[Beek]

Poor quality gas? Looks like 91 Octane is tops in Toronto.

[Big Nodge]

Originally Posted by BASELINE

Is no one else noticing that dramatic nose dive in power after 6000rpm on the Dinan tune? It's like the car hit a wall. I'm not loving it McDonalds...not at all.

I noticed it. One of the nice things about the B58 is it pulls hard right to the redline. Per this dyno, Dinan deltas fall to pretty much nil after 6k RPMs. Maybe earlier shift points are optimal with the Dinan tune? But more important, will the power drop-off make the car feel like it isn't pulling as hard up top? Possibly less fun to drive even if it's still faster? Not sure, hope to see more dynos.

On the other hand, from the posts it sounds like maybe he did his bypass/stock runs first? I can't really tell, but if that's the case then the car might not have been fully adapted to the Dinan piggyback for the pulls. Possibly explains the jerky power curve and weak top-end deltas.

[jalkster]

Originally Posted by BASELINE

Is no one else noticing that dramatic nose dive in power after 6000rpm on the Dinan tune? It's like the car hit a wall. I'm not loving it McDonalds...not at all.

Yeah... the whole power band looks sketchy.

[jalkster]

Originally Posted by Big Nodge

On the other hand, from the posts it sounds like maybe he did his bypass/stock runs first? I can't really tell, but if that's the case then the car might not have been fully adapted to the Dinan piggyback for the pulls. Possibly explains the jerky power curve and weak top-end deltas.

Yeah it seems to be this way... especially taking into account how different each Dinan pull was. He was warned to do the control test last!

[BASELINE]

Originally Posted by jalkster

Yeah it seems to be this way... especially taking into account how different each Dinan pull was. He was warned to do the control test last!

Something is up... either timing takes shit, hard boost drop off, or its cutting throttle cause that's a precipitous drop in power. I wouldn't want it, faster or not. 1000rpm of gear is too precious performance real estate to just give up for a lumpy ass power bump down low.

[BASELINE]

One thing to note DynaPacks tend to accentuate power fluctuations, so that part of what we see on the power choppiness, but the absolute numbers and that drop off at 6K is still very real.

[jalkster]

Boy am I ready for a flash

[Dinan_Engineering]

I will be the first to say that this dyno looks odd but I would just be speculating and making a stab at what is actually going on since info is incomplete. I can assure you though that the tune does not fall off at the top end like this chart seems to indicate. I think the OP can confirm that pretty quickly when driving. Power is still pulling all the way to redline just like the stock car. My guess is the car wasn't allowed to rest between pulls and these were back to back with the car pulling power to save itself most likely due to high CAT temps. Again, this is just a theory based on the limited data we have at hand though.

[BASELINE]

Originally Posted by jalkster

Boy am I ready for a flash

1000%.... enough of the Mickey Mouse mods. Let's get this party started.

[BASELINE]

Originally Posted by Dinan_Engineering

I will be the first to say that this dyno looks odd but I would just be speculating and making a stab at what is actually going on since info is incomplete. I can assure you though that the tune does not fall off at the top end like this chart seems to indicate. I think the OP can confirm that pretty quickly when driving. Power is still pulling all the way to redline just like the stock car. My guess is the car wasn't allowed to rest between pulls and these were back to back with the car pulling power to save itself most likely due to high CAT temps. Again, this is just a theory based on the limited data we have at hand though.

Fair points... if the program is boost additive and not absolute value the car could be hitting the fuel cap limit up top when combined with MPPSK.

In my experience dynoing my car multiple times... letting it sit ignition off or idling tends to raise IATs. Best way to cool it is (assuming proper airflow), to do a few light boost -/+ 3psi runs to get air flowing through the system. The B58 tends to try and retain as much heat as possible when turned off, my guess is to minimize cold start stresses.

[enjoythemusic]

Originally Posted by CCnYiting

Yes, Cubiza! You just mentioned, after dinantronic enabled, at sport+ mode, up shift is not that smooth as bypass mode, that's only point I really don't feel good with it! Specially when do up shift at full throttling, got some of delay, not like at by pass mode, bypass mode at up shift, the car just like pop up toward!

i'll take a educated guess at this, the stock diverter valve is not properly handling things, and thus too much pressure loss. We're waiting for the Dinan Big Turbo to arrive here to do up Stage 4 within a 435i and one of things planned is to bolt-on the Go Fast Bits DV+ mod. The 440 might be having the same DV problem when you have a lot of boost.

[BASELINE]

Originally Posted by enjoythemusic

i'll take a educated guess at this, the stock diverter valve is not properly handling things, and thus too much pressure loss. We're waiting for the Dinan Big Turbo to arrive here to do up Stage 4 and one of things planned is to bolt-on the Go Fast Bits DV+ mod.

On what engine? Stage 4 Dinan Turbo kit? Whatcha talking bout Willis!?