miataturbo.net-like debauchery thread (about the ND or something) - Page 54 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 06-08-2015, 10:05 AM   #1061
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Quote:
Originally Posted by Joe Perez View Post
It's difficult for me to wrap my head around that concept.
Same here, but someone's gotta buy em and take the hit for us

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Joe P likes child-bearing hips.
Not everyone's into narrow teenage boy hips, breh
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Old 06-08-2015, 10:10 AM   #1062
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Originally Posted by Braineack View Post
Joe P likes child-bearing hips.
This is true. Voluptuous, Puerto Rican, child-bearing hips.




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Originally Posted by z31maniac View Post
If no one purchased new cars, there would be no used cars for the misers to buy.
Understood, and something I am always mindful of. It's merely a perspective which I find difficult to internalize.

I think that perhaps I am sometimes wistful for the MT of old, before the days when serious racers joined us and the majority of us here were cobbling together turbo systems on a poverty budget. I'm not resentful by any means, merely torn between two worlds.

For me, personally, the Miata will always be a cheap car purchased thirdhand, flogged without mercy.



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Am I suddenly on the GRM forum? Jesus that attitude is so annoying.
We are in the purchase of buying it, but the deal hasn't closed yet.
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Old 06-08-2015, 02:00 PM   #1063
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Originally Posted by Joe Perez View Post
Understood, and something I am always mindful of. It's merely a perspective which I find difficult to internalize.

For me, personally, the Miata will always be a cheap car purchased thirdhand, flogged without mercy.
I have found myself thinking along these lines for every single new car ever, resolving to only buy used. This is the first time I've considered making an exception. For this car, I think Mazda's engineering should be rewarded with as many retail purchases as possible so they can produce as many NDs as possible, allowing gratuitous third-hand dillydallying over the coming decades.

Also, market segment support, sports cars dying out, rabble rabble rabble.
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Old 06-08-2015, 02:17 PM   #1064
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Idk why I'm so attracted to the poop (I haven't touched it since Friday). Today's fever dream seems to be a bunch of mnetters giving each other hand breezys over a theoretical Mazdaspeed variant.

Choice options include "Why don't they just use the retired MZR DISI?" and the "What about the the Renesis 16X!?" with a splash of "THE FIATA IS THE ONLY TRUE ND".

Personally, my theoretical ND will be powered by a New-Old-Stock Atlas V because nothing can touch 2300lbs (plus 737,400lbs) and 933,000 lbs of thrust.
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Old 06-08-2015, 02:57 PM   #1065
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Nah needs some Merlin 1Ds, we don't have enough RD-180s to launch as it is, and congress in their infinite wisdom has decided to ban them.
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Old 06-08-2015, 03:26 PM   #1066
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I'm still trying to gain some kind of perspective as to what the future likely has in store for the ND in terms of forced induction.

There are enough Skyactiv-G engines out there at this point that I assumed a bit of light Googling would reveal some sort of useful info. Instead, all I'm finding are a bunch of armchair engineers on various forums claiming that the application of forced induction on this engine is simply impossible because the compression ratio is too high. Of course, some of them have also claimed that for a given engine, more power will always be made by increasing the compression ratio than by turbocharging, but the point is that nobody out there seems to have actually tried it yet, or even indicated a serious interest in doing so. (eg: by digging into the fuel and ignition controls, the understanding of which will invariably be crucial to turbocharging any direct-injection engine.)


Sure, GDI is new and scary. And 13:1 is a tad on the high side for most of us. But, then, fuel injection itself used to be new and scary. And 10:1 used to be high, but nowadays we can apply moderate levels of boost to that number with little more than a few powercards.


It's vexing...
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Old 06-08-2015, 03:28 PM   #1067
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Mazda has been dabbling in 18:1 gas motors.
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Old 06-08-2015, 03:32 PM   #1068
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the toyobaru's are running 12.5:1 with boost without issues
there's also plenty of cars with factory DI that the aftermarket has learned to control/modify, and in fact the new wrx's are doing a seriously impressive job running e85 through the stock DI injectors, netting absurd gains with no major documented issues so far.

it's not looking too bad is what I'm trying to say
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Old 06-08-2015, 03:42 PM   #1069
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Quote:
Originally Posted by Joe Perez View Post
I'm still trying to gain some kind of perspective as to what the future likely has in store for the ND in terms of forced induction.

There are enough Skyactiv-G engines out there at this point that I assumed a bit of light Googling would reveal some sort of useful info. Instead, all I'm finding are a bunch of armchair engineers on various forums claiming that the application of forced induction on this engine is simply impossible because the compression ratio is too high. Of course, some of them have also claimed that for a given engine, more power will always be made by increasing the compression ratio than by turbocharging, but the point is that nobody out there seems to have actually tried it yet, or even indicated a serious interest in doing so. (eg: by digging into the fuel and ignition controls, the understanding of which will invariably be crucial to turbocharging any direct-injection engine.)


Sure, GDI is new and scary. And 13:1 is a tad on the high side for most of us. But, then, fuel injection itself used to be new and scary. And 10:1 used to be high, but nowadays we can apply moderate levels of boost to that number with little more than a few powercards.


It's vexing...

When I get one in 2017/2018 you sure as hell can bet that MKTurbo's will be trying to boost a ND as long as engine management is figured out.
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Old 06-08-2015, 03:47 PM   #1070
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By then we should have chinacharger EFR knockoffs
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Old 06-08-2015, 03:51 PM   #1071
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Correct me if I'm wrong, but I thought the whole point of DI was to spray the fuel exactly at your ignition event. Is there a major difference in injection events between a DI gas and DI diesel engine?
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Old 06-08-2015, 03:52 PM   #1072
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Quote:
Originally Posted by 18psi View Post
By then we should have chinacharger EFR knockoffs
EFR knockoff's you are silly. I am going to use the same t3 I use in every other setup. Mostly because I am lazy and don't want to stock more turbos.
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Old 06-08-2015, 03:56 PM   #1073
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Diesel uses the fuel for ignition. These GDI engines do not (yet anyway). In homogeneous mode you still need time to disperse the fuel. In stratosfied mode maybe a small fuel event near the time of ignition and maybe a little more after that.
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Old 06-08-2015, 04:32 PM   #1074
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Correct me if I'm wrong, but I thought the whole point of DI was to spray the fuel exactly at your ignition event. Is there a major difference in injection events between a DI gas and DI diesel engine?
edit: Dave beat me to the post.

But yes, while GDI delays the injection of fuel until a point in the compression cycle near to the ignition point, there is some time elapsed.

More importantly, the fuel is still expected to burn in a controlled manner with a single flame-front, rather than detonating. Even a GDI engine can experience knocking, and that's the characteristic that the naysayers are using to justify their claims that turbocharging the ND engine will prove impossible.

(By Mazda's own admission, the North American-spec Skyactiv-G engines have a slightly lower CR than their rest-of-world counterparts in order to allow us to use 87 octane (R+M/2) fuel without knocking.)




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Originally Posted by shuiend View Post
When I get one in 2017/2018 you sure as hell can bet that MKTurbo's will be trying to boost a ND as long as engine management is figured out.
That's the part that worries me a tad.

Historically, Mazda ECUs have not been well-served by the aftermarket, nor easily accessible to the consumer.

Subaru ECUs can be comprehensively reprogrammed with nothing more than an OBD-II dongle. Hondas are well-served by Hondata which, while slightly pricey, will happily sell you a daughterboard that puts a USB port on the side of your ECU.

But Mazda?

The NC has been on the streets for a little over 10 years, and yet there's still no way for me to dyno tune one. So far as I'm aware, ECUTek is the only player in the NC ECU market, and they've chosen not to give end-users the ability to modify their own ECU data, preferring instead to enforce the old tune-by-mail scheme where they get you "close enough" without actually allowing you to peek under the curtain.


Don't mean to sound like a negatron here, just thinking out loud...

Last edited by Joe Perez; 06-08-2015 at 04:42 PM.
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Old 06-08-2015, 04:36 PM   #1075
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MS3 and MS6 have the cobb accessport which is same/similar to what the subaru kids play with. So that's pretty cool

I think the Miata just keeps getting overlooked by the major companies.

I guess ecutec is finally working on stuff for the NC, but it's so overpriced
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Old 06-08-2015, 04:48 PM   #1076
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OFT is available for the NC as far as i know.
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Old 06-08-2015, 04:57 PM   #1077
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OFT is available for the NC as far as i know.
Huh, so it is.

OpenFlash Tablet

I was not aware of that.
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Old 06-08-2015, 05:46 PM   #1078
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OFT is available for the NC as far as i know.
I have watched the video on their site and done a little bit of reading. From just a quick look OFT only lets you install tunes Shiv makes, which is useless to me. Looking at the downloads section it lists RomRaider as something to use to do the tuning yourself. Having never used RomRaider before is it anything like TS?

This video from Shiv makes me optimistic. Maybe an NC is in my future sometime next year.
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Old 06-08-2015, 05:51 PM   #1079
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Romraider is pretty cool, I like it. Not like MS, but in a sense the "MS of OEM ecu tuning"
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Old 06-08-2015, 05:58 PM   #1080
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Romraider is pretty cool, I like it. Not like MS, but in a sense the "MS of OEM ecu tuning"
So basically I am spoiled by TS?
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