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Originally Posted by akaryrye
(Post 363644)
4 tiny turbos would take just as long as one turbo 4 times as big ... well actually i think it would be worse due to the way the exhaust pulses would be hitting the turbines. Think about it, instead of 1800cc to power a turbo, now for each you have 450cc.
whatever, you were just joking anyway, and i ruined it lol. |
i was thinking about doing twin turbos just for the awesome factor, where each one is on it's own system and is fed into two ITB runners. seems expensive, and twice as many points of failure. But it sure would be one engine bay packed to the gills with awesome.
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just dont forget a balance tube.
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Originally Posted by N3v
(Post 363803)
i was thinking about doing twin turbos just for the awesome factor, where each one is on it's own system and is fed into two ITB runners. seems expensive, and twice as many points of failure. But it sure would be one engine bay packed to the gills with awesome.
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Tune the spark and fuel maps using a Mustang 5.0 MAF sensor. The calibration values are already available in megasquirt. I am unsure of how you would do boost control and other MAP based functions without a MAP sensor though.
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Originally Posted by The_Pipefather
(Post 363913)
Tune the spark and fuel maps using a Mustang 5.0 MAF sensor. The calibration values are already available in megasquirt. I am unsure of how you would do boost control and other MAP based functions without a MAP sensor though.
Isnt that what its for? |
I didnt know u were planning to run a turbo itb setup or was this a recent thought?
ill be there whenever i can to snap pics! actually need to post up the pics i havd of ur setup when i get home. |
Originally Posted by Saml01
(Post 363935)
Hybrid Alpha N?
Isnt that what its for? BTW not a single OEM uses speed-density these days. |
Originally Posted by flier129
(Post 363940)
I didnt know u were planning to run a turbo itb setup or was this a recent thought?
ill be there whenever i can to snap pics! actually need to post up the pics i havd of ur setup when i get home. I'm gonna toy around with the idea of using a mustang 5.0 MAF in my setup, it would instantly make tuning a snap. I don't really trust my current IAT sensor anyway, which is installed into the #1 runner, literally an inch and a half from the engine head. |
Originally Posted by skidude108
(Post 363846)
What about a cross? the turbo hooked to cylinders 1,2 feed 3,4 and the turbo running off 3,4 feed 1,2... No idea if there would be any benefit, but it might add to the cool factor.
I just worry about unequal pressure, so a balance tube for the tow manifolds would make sure all cylinders see the same amount of boost. it's common in TT v6 and v8 setups. |
idle would suffer with hybrid alpha n. off boost would be in alpha n while on boost would be in speed density.
ideally, i would like to tune idle in speed density, above 85 kpa in alpha n (which is how i have my itb setup) and boost in speed density. it doesnt seem doable that way. so, maf might be the best option with "boost sensing" for timing retard during boost. |
Originally Posted by Miatamaniac92
(Post 363619)
Can be done successfully, search JeremyS on the pointy board.
His homepage His top speed run, I don't know what he was running at the time though. MX-5 Miata Forum - View Single Post - Fastest Miata? ITB's are on my long term projects list. Chris |
well, i don't really care, I already have the ITB's. I'll just do it for the cool factor. It might flow better because the pressure is being regulated right at the runners, and it might also have better response. I really don't know though. What is certain though, is that it'd be beastly. As long as it performs as well as an aftermarket manifold I'll be happy.
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If you try the setup, please let us know how it comes along.
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Don't be too disappointed if you find less gains than say, bumping the boost up by 2 psi, which is a lot easier to do.
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Originally Posted by N3v
(Post 364518)
well, i don't really care, I already have the ITB's. I'll just do it for the cool factor. It might flow better because the pressure is being regulated right at the runners, and it might also have better response. I really don't know though. What is certain though, is that it'd be beastly. As long as it performs as well as an aftermarket manifold I'll be happy.
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5 Attachment(s)
ITB whoring time!
Attachment 208382 Attachment 208383 Attachment 208384 Attachment 208385 Attachment 208386 |
lol what happened to your carbon fiber plate?
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Originally Posted by flier129
(Post 365036)
ITB whoring time!
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