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Dude if the Veyron can do it a Miata can do it better

 

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.

 

just dont forget a balance tube.

 

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.

 

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.

 

Hybrid Alpha N?

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.

 

MAF is a way more elegant and reliable way of doing it. You have a single air inlet on a turbo car anyway, might as well use it to measure airflow directly.

BTW not a single OEM uses speed-density these days.

 

I'm always playing around with ideas. last week I was thinking high compression and nitrous, which would work and get me all the power i'd want on the street, then well into turbo power on the track, but turbos are just really damn fun, and an itb turbo setup would be monstrous. I don't have anything here at school besides my car and its current setup. I need to gather parts for my engine build though, cause I'm getting paranoid about the condition of my current ****. I need a job like yesterday.

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.

 

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.

 

I talked with Jeremy about his setup sometime ago and he basically told me the complexity of the system wasn't worth the gains. All in all a well designed single TB setup would do just as well. Plus with a turbo, you really don't hear the ITB's.

 

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.

 

If you try the setup, please let us know how it comes along.

 

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.

 

Well that was kind of how Jeremy came to it. He purchased a former CSP car that had the ITB's and a bunch of other parts. Took what he needed, so other parts to friends, and then sold the car itself (making money in the end).

 

ITB whoring time!

 

lol what happened to your carbon fiber plate?

 

all this car needs is a turbo now