[DrDomer]

So, did Stan send you?

Originally Posted by jprall

Pardon the noob post, but I wanted to jump in. Dinan developed his software on my car. Built the oil cooler, exhaust, suspension, his entire 335 catalog of parts available now and 'coming soon' on my car.

You have my attention. Spill the beans.

I have my own dyno sheets which came from Dinan's DynoPacks which are _____ than DynoJet. Insert higher or lower, depending on how your day is going. I have found that the dyno comparison thing is nothing to make any real decisions over.

[Agreed.

There is a question of power falling off after 6K RPM. The short answer is yes. In fact because of the size of the turbos, revving past 6K has been described as simply making noise. Who knows, maybe someone else has figured out past 6K, but I figure I would confirm that question from my experience. Shift points and power band are really nice matched shifting at ~6K

Wondering how the others extract power to redline then?

I have not asked Steve directly but I don't think this is because he's playing it safe. I've seen my PSI at 13.8. If I had to describe it, I would put it as the software lets the turbos go full bore as soon as they can and as long as they can but they cannot continue to feed that kind of pressure past 6K. It's just my opinion, take it for what it is worth.

I still think it's a reliability issue, not that the turbos are pooped. Still wouldn't know how Shiv could get more juice out of the engine past 6K if their was nothing left.

Next chapter - How frickin awesome are oil coolers?

Not really sure. Care to enlighten me?

[stillclaimndp]

Originally Posted by Mr. 5

You can't compare dynos that were done on different dynos.
You just can't.

i kinda disagree he isn't comparing power, just curve, and both the dinan and the procede are done on "dynojet research" dynos....

edit: looks like attache is too it just has some big old funky advertisement on it...

[e90AW335i]

Originally Posted by stillclaimndp

i kinda disagree he isn't comparing power, just curve, and both the dinan and the procede are done on "dynojet research" dynos....

Sooooooo........send me your files.....

[stillclaimndp]

Originally Posted by revah2

This thread is completely useless and your comparisons are very invalid
Different Dyno, Different day, Different car

-1, not a power comparison and all 3 are dynojet research~

[stillclaimndp]

Originally Posted by jprall

Next chapter - How frickin awesome are oil coolers?

not $2,000 awesome when the car comes with it from the factory (or bmw will give you one free if your didn't)

[stillclaimndp]

Originally Posted by kyleh4852

Sooooooo........send me your files.....

X files?

[e90AW335i]

Originally Posted by stillclaimndp

not $2,000 awesome when the car comes with it from the factory (or bmw will give you one free if your didn't)

+1, now multiple Houston bmw dealerships have told me that all late 2007 and all 2008 models will come with oil cooler regardless of if you have sport package or not...

[e90AW335i]

Originally Posted by stillclaimndp

X files?

.drf files....

[stillclaimndp]

Originally Posted by kyleh4852

.drf files....

335vince and I will get over to the modacar dyno soon... It will be our first time on here, both cars stock other than V2.02. Shiv said at one point he wanted us to go with him and try something new, we are hoping that is his intake or the 2.03 map.

Either way I am hoping to possibly take the opportunity to change torque settings between runs as only a few people have tried that. Will definitely post as soon as we go.

[revah2]

Originally Posted by stillclaimndp

-1, not a power comparison and all 3 are dynojet research~

Doesn't matter. It's still very unscientific and purely speculation

[e90AW335i]

Originally Posted by stillclaimndp

335vince and I will get over to the modacar dyno soon... It will be our first time on here, both cars stock other than V2.02. Shiv said at one point he wanted us to go with him and try something new, we are hoping that is his intake or the 2.03 map.

Congrats..

I look forward to the post....

[jprall]

1) Stan did not send me
2) I had an oil cooler already, see other thread for more info. I still had oil temp issues and I hadn't hit the track yet. So Dinan Oil Cooler = frickin awesome. (awesome if you consider its effectiveness and elegance in design, placement, unobtrusiveness, etc. There is a lot of work in that kit.) Oil Coolers are plainly not simple. The Factory Oil Cooler will not allow track day fun. That may not matter to you. That's cool too.
3) My personal dyno sheet is from a dyno pack. The dyno pack is the kind of dyno that you mount like a wheel versus all kinds of straps and and drum rollers. I watched my car make vroom vroom noises on this dyno. There, now there is even more mystery on how to compare dyno sheets.
4) There was a post earlier about power roll-off being a declared intentional thing from Dinan for safety. I''ll concede that may very well be the case. That was not said to me, but I wouldnt blame him either.

[stillclaimndp]

Originally Posted by revah2

Doesn't matter. It's still very unscientific and purely speculation

Well apparently we don't see eye to eye. Perhaps it would be better to think about what we are looking at. We are looking at 3 different measurements based off information expressed by the ability to spin a large heavy barrel.

Basically it's really a simple tool when it comes to a dynojet as opposed to a mustang dyno or dynamic dyno, which proactively apply resistance and require very accurate calibration.

That considered, i think that the shape of the dynographs can in fact be compared if they are the same brand, but the power numbers cannot be compared.

[e46e92love]

Originally Posted by stillclaimndp

i kinda disagree he isn't comparing power, just curve, and both the dinan and the procede are done on "dynojet research" dynos....

edit: looks like attache is too it just has some big old funky advertisement on it...

Thank You

Originally Posted by stillclaimndp

-1, not a power comparison and all 3 are dynojet research~

Thank you again

[sambonator]

Was boost logged in these runs?

[RiXst3r]

I am sure someone already said this, but I dont feel like wasting my time reading the whole thread.

You need the graphs to be on the same scale... and then you can compare curves and delta... but you cant compare peak power this way...

Thanks for the effort though

[e46e92love]

Originally Posted by stillclaimndp

Well apparently we don't see eye to eye. Perhaps it would be better to think about what we are looking at. We are looking at 3 different measurements based off information expressed by the ability to spin a large heavy barrel.

Basically it's really a simple tool when it comes to a dynojet as opposed to a mustang dyno or dynamic dyno, which proactively apply resistance and require very accurate calibration.

That considered, i think that the shape of the dynographs can in fact be compared if they are the same brand, but the power numbers cannot be compared.

....and thank you

[BoostedInPhx]

I think if you follow this link http://www.dinancars.com/filepreview...A%20EDITED.pdf
you will get your answer. The second bullet item under the section "The Dinan Way" will give you your answer. They believe at higher RPMs and boost the maximum RPM limit is exceeded for the turbos. This could result in a reliability problem in their opinion. They taper off the boost at higher RPMs to prevent this over speed condition and this results in a drop in hp. I have also questioned the reliability of the tunes that bypass the one turbo so the waste gate is always closed so all the exhaust is driving the one turbo. Is this driven to excessive RPMs? Will this result in reduced reliability?

I am also surprised others have not commented on this Dinan PDF for their tune. If you read it closely you see that they both have tested this using a chassis dyno and an engine dyno. This is how they determined the actual drive line losses. Also it show a peak flywheel horsepower on a stock engine at 332 FWHP when BMW says it is 300. Underrated as expected and explains why a 335 is faster then a 330hp G37. The stock wheel hp is also higher because it was tested on a dynopack dyno which is a load based dyno as opposed to an inertia based dyno. The load based dyno can measure the hp at a fixed speed/load so no power is being used to accelerate the wheels, drive trains and rotating mass of the engine resulting in a higher readings. This reading more resembles the manufacture's FWHP readings.

Maybe most people missed the link to the press release since it is not real obvious. As a disclaimer I have no one's tune on my 335.

[stillclaimndp]

Originally Posted by e46e92love

....and thank you

lol that was the first time anyone has told me i wasn't scientific im like mr. fact, totally w/ you on this one my man.

[e46e92love]

Originally Posted by BoostedInPhx

I think if you follow this link http://www.dinancars.com/filepreview...A%20EDITED.pdf
you will get your answer. The second bullet item under the section "The Dinan Way" will give you your answer. They believe at higher RPMs and boost the maximum RPM limit is exceeded for the turbos. This could result in a reliability problem in their opinion. They taper off the boost at higher RPMs to prevent this over speed condition and this results in a drop in hp. I have also questioned the reliability of the tunes that bypass the one turbo so the waste gate is always closed so all the exhaust is driving the one turbo. Is this driven to excessive RPMs? Will this result in reduced reliability?

I am also surprised others have not commented on this Dinan PDF for their tune. If you read it closely you see that they both have tested this using a chassis dyno and an engine dyno. This is how they determined the actual drive line losses. Also it show a peak flywheel horsepower on a stock engine at 332 FWHP when BMW says it is 300. Underrated as expected and explains why a 335 is faster then a 330hp G37. The stock wheel hp is also higher because it was tested on a dynopack dyno which is a load based dyno as opposed to an inertia based dyno. The load based dyno can measure the hp at a fixed speed/load so no power is being used to accelerate the wheels, drive trains and rotating mass of the engine resulting in a higher readings. This reading more resembles the manufacture's FWHP readings.

Maybe most people missed the link to the press release since it is not real obvious. As a disclaimer I have no one's tune on my 335.

I may be a complete moron but what tune bypasses one of the turbos

[e46e92love]

Originally Posted by stillclaimndp

lol that was the first time anyone has told me i wasn't scientific im like mr. fact, totally w/ you on this one my man.

BTW, potato guns are fun as sh*t to play with, got a huge one myself

[stillclaimndp]

Originally Posted by e46e92love

BTW, potato guns are fun as sh*t to play with, got a huge one myself

HA! Combustion in general is fun to play with, N54 anyone?