BAC5.2 Posted February 13, 2012 Share Posted February 13, 2012 Because then you are trying to fuel from two independent sources, which would each require their own control. It's like trying to run two sets of injectors, and each set being a different size. It can be done, but it takes a long time. Add to that that the fact that the ECU doesn't have any provisions for running port-injection at high RPM and you are facing a huge battle right from the get-go. The easiest, and likely best thing to do, would be to convert to Port-injection only, or use DI for low-load and cruise, and port injection only at higher loads and open-loop fueling. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
ChefRacer Posted February 13, 2012 Share Posted February 13, 2012 Well if you set a static level to the DI injectors, like setting them to run at a peak efficiency percentage, then you could just adjust the PI for anything above and beyond what the DI injectors could handle. DI gets much better efficiency than PI, and can make more power than the PI injectors can handle. Or am I just talking out of my ass? Link to comment Share on other sites More sharing options...
BAC5.2 Posted February 13, 2012 Share Posted February 13, 2012 I think you are talking a bit out of your rear, yes. Setting a "static" DI output isn't really possible, because fueling changes dynamically. Your best bet I would imagine, is to use DI during closed loop, and PI in open-loop. It'd still be kind of a pain, but closed-loop fueling is pretty straight forward. The trick will be whether or not you can disable the existing parameters for DI/PI fueling. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
moulty Posted February 14, 2012 Share Posted February 14, 2012 Qwertyuiop[]poiuytrewrtyuiop[]\\][poiu-\-0986757890-=-098765467897654321`2345678`12357890-09876567890`123456 Link to comment Share on other sites More sharing options...
Mega Users seabass07 Posted February 14, 2012 Mega Users Share Posted February 14, 2012 Qwertyuiop[]poiuytrewrtyuiop[]\\][poiu-\-0986757890-=-098765467897654321`2345678`12357890-09876567890`123456 This is the most helpful post ive seen in a while! Link to comment Share on other sites More sharing options...
dudeondacouch Posted February 14, 2012 Share Posted February 14, 2012 This is the most helpful post ive seen in a while! agreed. Link to comment Share on other sites More sharing options...
moulty Posted February 14, 2012 Share Posted February 14, 2012 *Note to others - don't clean your keyboard while browsing the forums. That is all. Link to comment Share on other sites More sharing options...
Draco-REX Posted February 14, 2012 Share Posted February 14, 2012 And here I thought it was a faceroll. Link to comment Share on other sites More sharing options...
bochinam Posted February 20, 2012 Share Posted February 20, 2012 Why does everyone want and expect there to be a turbo version? I'd prefer to have a high strung 6 than another vfxx that needs upgrading. Subaru, FA30 please. Link to comment Share on other sites More sharing options...
ChefRacer Posted February 20, 2012 Share Posted February 20, 2012 Saw a BRZ on Rhawn St. in NE Philly tonight in red. Link to comment Share on other sites More sharing options...
Ridgeracer Posted February 20, 2012 Share Posted February 20, 2012 Anyone look at gas prices recently?? I'm ok without the turbo. "Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T Link to comment Share on other sites More sharing options...
Draco-REX Posted February 20, 2012 Share Posted February 20, 2012 Anyone look at gas prices recently?? I'm ok without the turbo. The projected mileage for the BRZ has been surprisingly low. I'm hoping the official numbers are much higher. Link to comment Share on other sites More sharing options...
red beast Posted February 20, 2012 Share Posted February 20, 2012 it needs a turbo 3.6 Link to comment Share on other sites More sharing options...
BAC5.2 Posted February 21, 2012 Share Posted February 21, 2012 The projected mileage for the BRZ has been surprisingly low. I'm hoping the official numbers are much higher. I agree. I was expecting better. Has fuel grade been officially released yet? It would suck if it required 93. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
CasopoliS Posted February 21, 2012 Share Posted February 21, 2012 I agree. I was expecting better. Has fuel grade been officially released yet? It would suck if it required 93. I think I read somewhere that it can run on lower octane fuels but they needed 93 to hit the 200 hp mark. I think they have to recommend premium if they spec everything based off it, but I could be wrong. I wish the BRZ / FR-S would have hit the 230 hp mark someway somehow. For what the car is supposed to be, I am sure 200 is a decent number, especially since it is so small... but I would want just a little more in a straight line. To its credit, a Miata is just 167 Hp and also recommends premium unleaded. I am sure this has all been discussed and beat to death, I just decided to jump in this thread. Link to comment Share on other sites More sharing options...
Draco-REX Posted February 21, 2012 Share Posted February 21, 2012 With a 12.5:1 compression ratio, I'm sure Premium is preferred if not mandatory. The EPA hasn't released official mileage numbers yet, but I will be surprised if the BRZ isn't north of 30mpg highway. I can average 29mpg in my spec.B which is 700lbs heavier and doesn't have as good aero or direct injection. Magazines keep estimating around 28-29mpg highway and I just don't see how that can be possible. Link to comment Share on other sites More sharing options...
Ridgeracer Posted February 21, 2012 Share Posted February 21, 2012 I would hope actual mpg on the highway is mid 30s considering the DI. "Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T Link to comment Share on other sites More sharing options...
CasopoliS Posted February 21, 2012 Share Posted February 21, 2012 I can average 29mpg in my spec.B You driving with an egg between your foot and the accelerator? That is good. Link to comment Share on other sites More sharing options...
BAC5.2 Posted February 21, 2012 Share Posted February 21, 2012 With a 12.5:1 compression ratio, I'm sure Premium is preferred if not mandatory. The EPA hasn't released official mileage numbers yet, but I will be surprised if the BRZ isn't north of 30mpg highway. I can average 29mpg in my spec.B which is 700lbs heavier and doesn't have as good aero or direct injection. Magazines keep estimating around 28-29mpg highway and I just don't see how that can be possible. I was thinking the same. I CAN get 29mpg on the highway. The BRZ should be able to easily beat that. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
Draco-REX Posted February 21, 2012 Share Posted February 21, 2012 You driving with an egg between your foot and the accelerator? That is good. Keep in mind this is pure highway driving. Cruise control set at 72-73mph from one gas station to the next across upper New York. So pretty ideal conditions. But I expect more from the BRZ. Link to comment Share on other sites More sharing options...
CasopoliS Posted February 21, 2012 Share Posted February 21, 2012 I have been reading articles on both the BRZ and the Genesis Coupe. Two different cars, but nonetheless I am sure they will be cross-shopped. Based on what I have read, the 3.8 V6 is the only Gen Coupe to buy, but maybe with the 2013 power increase the 2.0T will become a better option than the last version. But if the BRZ gets excellent gas mileage, it could potentially beat both as a DD (especially the V6). Personally, with the BRZ and the 2013 Genesis Coupe coming out, I think a slightly used MT 3.8 Gen Coupe Track will become a great buy. You will probably be able to get RWD, N/A 300 hp, Brembos, 6MT for around $20-22k. Gas mileage will be so-so with the V6... but still. I might be in the wrong thread here. I am just talking aloud. Carry on. Link to comment Share on other sites More sharing options...
dmanaenk Posted February 21, 2012 Share Posted February 21, 2012 ^Before you settle on last gen GC with 6mt - go read their forums. That tranny is junk. 666 Link to comment Share on other sites More sharing options...
Ridgeracer Posted February 21, 2012 Share Posted February 21, 2012 I have been reading articles on both the BRZ and the Genesis Coupe. Two different cars, but nonetheless I am sure they will be cross-shopped. Based on what I have read, the 3.8 V6 is the only Gen Coupe to buy, but maybe with the 2013 power increase the 2.0T will become a better option than the last version. But if the BRZ gets excellent gas mileage, it could potentially beat both as a DD (especially the V6). Personally, with the BRZ and the 2013 Genesis Coupe coming out, I think a slightly used MT 3.8 Gen Coupe Track will become a great buy. You will probably be able to get RWD, N/A 300 hp, Brembos, 6MT for around $20-22k. Gas mileage will be so-so with the V6... but still. I might be in the wrong thread here. I am just talking aloud. Carry on. I was actually cross shopping all three. However given the fact that my 05 LGT is still plenty fast for me but a pig when it comes to gas mileage and because I live in the tri-state having big power doesn't really matter as much anymore. I just want to go a different direction with my next car and also get better gas mileage too considering it cost me 57 bucks this morning to fill the LGT. "Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T Link to comment Share on other sites More sharing options...
Alfred_Buchi Posted February 21, 2012 Share Posted February 21, 2012 ^ come on diesel Subaru in the states... Brz mileage will probably be real reasonable. I don't think anyone was trying to beat sport coupe mpg records or anything but especially compared to our legacies, should be pretty good. Anyone averaging over 20 in a legacy is spending way more time on the freeway than I do. 15 mile each way commute on surface streets, lots of stop lights = 15.9 mpg consistently. 17 if I have zero fun for a whole week. I hate my mpg but love my legacy... Gonna be tough to find anything I can afford that would beat it overall. Link to comment Share on other sites More sharing options...
BAC5.2 Posted February 21, 2012 Share Posted February 21, 2012 I have been reading articles on both the BRZ and the Genesis Coupe. Two different cars, but nonetheless I am sure they will be cross-shopped. Based on what I have read, the 3.8 V6 is the only Gen Coupe to buy, but maybe with the 2013 power increase the 2.0T will become a better option than the last version. But if the BRZ gets excellent gas mileage, it could potentially beat both as a DD (especially the V6). Personally, with the BRZ and the 2013 Genesis Coupe coming out, I think a slightly used MT 3.8 Gen Coupe Track will become a great buy. You will probably be able to get RWD, N/A 300 hp, Brembos, 6MT for around $20-22k. Gas mileage will be so-so with the V6... but still. I might be in the wrong thread here. I am just talking aloud. Carry on. The Genesis buying guide is this: Leaving it stock? Get the V6 Looking to mod? Get the 2.0T I've driven both variants, and the trans is fine in both. Definitely better than the cable 6MT in the 2010+ LGT. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
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