miataturbo.net-like debauchery thread (about the ND or something)
04-01-2015, 12:56 AM
#882
Do you really think someone is going to do that on a brand new car still under warranty?
The only people that will mod extensively will be shops that would buy as company car/shop car and those should probably focus on new technology development and support then throwing 90's tech into a new car adn calling it a day.
I dunno tho, just my thoughts
I see so much really cool stuff on other platforms it makes me sad that only in the recent few years we've started seeing cool stuff like more ecu's, modern fueling, modern turbocharging, etc on our cars start to get developed.
The only people that will mod extensively will be shops that would buy as company car/shop car and those should probably focus on new technology development and support then throwing 90's tech into a new car adn calling it a day.
I dunno tho, just my thoughts
I see so much really cool stuff on other platforms it makes me sad that only in the recent few years we've started seeing cool stuff like more ecu's, modern fueling, modern turbocharging, etc on our cars start to get developed.
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04-01-2015, 01:12 AM
#883
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Location: Goleta, Southern California
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I see your point and even agree with it for the long term. I just have the view that D.I. is to port as port was to carbs/T.B.I. It will take time for the aftermarket to catch up. For the short term, there is low hanging fruit.
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04-01-2015, 07:23 AM
#884
With DI you can have your compression and turbo it too. You're just going to have to wait for it to get supported by stuff that has support. Thats a clunky sentence that doesnt make sense but let me explain. The skyactiv motors are already supported by MazdaEdit, but the support of mazda edit is turble. The support of megasqurit is high, but no one sells and off the shelf way to make a MS do DI, everything involves the factory driver box from a toyota or an older mazda DI motor and some custom work. And I dont see the first one changing until the motor gets put in something more interesting than the 3 and the 6, and I dont see the 2nd one changing till DIYAT finishes their current work and starts working on product improvements.
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04-01-2015, 12:21 PM
#890
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Join Date: Mar 2010
Location: Melissa, TX
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Well what matters is the dynamic compression ratio anyway. Need to research the sky active 2.0 to figure that out.
On the DISI 2.3 (10.5 static) e85 mixtures are a miracle fuel. I run a mixture of 7gal 87 and 5 gal e85 and I can reach MBT (and past) at 25psi on a 2871 .55 A/R turbo, putting me at 400whp. On standard 93 I was knock limited at about 330whp. A 3/9 mixture of 93 also gets me there but the extra e85 is good insurance.
I had to add an injector before the throttle body to support the fueling I needed, others run similar setups without the extra injector, but at leaner mixtures than I like.
On the DISI 2.3 (10.5 static) e85 mixtures are a miracle fuel. I run a mixture of 7gal 87 and 5 gal e85 and I can reach MBT (and past) at 25psi on a 2871 .55 A/R turbo, putting me at 400whp. On standard 93 I was knock limited at about 330whp. A 3/9 mixture of 93 also gets me there but the extra e85 is good insurance.
I had to add an injector before the throttle body to support the fueling I needed, others run similar setups without the extra injector, but at leaner mixtures than I like.
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04-01-2015, 12:46 PM
#892
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Join Date: Mar 2010
Location: Melissa, TX
Posts: 172
Total Cats: 20
No that doesn't work at all. The feed pressure to the high pressure pump has nothing to do with the resulting output of the high pressure pump. The high pressure pump is positive dispacement and rail pressure is closed loop controlled via a feed solenoid. We can and do boost the pressure target in the ECU, but there are a few issues. The first is if the pressure relief valve is constantly exercised it fails, the second is we can't currently change out the rail pressure sensor and recalibrate, and when it rails out it causes fuel cut. Lastly the pressure is stock at 1600psi, we bump to 1800, but how high do you really want to push it Before worries about leaks/bursting fuel Lines, and at some point the injectors won't be able to open.
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04-01-2015, 12:57 PM
#893
No that doesn't work at all. The feed pressure to the high pressure pump has nothing to do with the resulting output of the high pressure pump. The high pressure pump is positive dispacement and rail pressure is closed loop controlled via a feed solenoid. We can and do boost the pressure target in the ECU, but there are a few issues. The first is if the pressure relief valve is constantly exercised it fails, the second is we can't currently change out the rail pressure sensor and recalibrate, and when it rails out it causes fuel cut. Lastly the pressure is stock at 1600psi, we bump to 1800, but how high do you really want to push it Before worries about leaks/bursting fuel Lines, and at some point the injectors won't be able to open.
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