Itb Setup Ecu?

[unarmed_skyline]

you could always run the thing on flintstone power that would sort out your map sensor woes.

Or you could set it up and tune it off the tps only

"Some ITBS don’t use a map sensor because they have no way of reading vacuum from all 4 ITB’s this is where you need to tune a car from the TPS sensor only using a method of tuning called Alpha-N, which can also be used in combination with a atmospheric pressure sensor to detect how high or low you are above sea level" (stolen from a honda site)

but i've been doing a lot of reading and all the 4ag boys all seem to use tps vs rev tunning only and have no issues

you can also combo tune with tps ans map sensor, having a though map (manifold absolute pressure) sensor so if you running na with equal length runners ect would the absolute pressure be equal over each runner?? or could u feed a vacum line from each throttle body/intake into a big collecter then into map sensor would that equalise/adverage the map??

the reason people take the itb's off gtrs is because of how hard they are to tune with otherwise every car would have em if they were easy

Also just a thought without a manifold you would need a vac pump so feed for your brake master as you'd have no vacum to grab, and how do you go about ur idle control fuel pressure reg ect??

Heres a pic of an sr20 with itb's into a custom plenum which is your second idea, i think it will end up being the easiest/cheapest and if set-up probperly i dont think you would loose that much throttle response, also easier to set up some sorta cold air feed

plus a link to the artical http://www.turbomagazine.com/features/0704.../car_specs.html

This is what an engine should sound like toyota v8 with itbs ohh sounds soo hot

Here's a guide on how to build and set-up with lots of great info except about the map sensor set-up grrrrr

http://www.v8soarer.com/itb/index.shtml#Vacuum

ok think thats enought to think about for now, after spending the last half hour listening to itb set ups on Utube has convinced me next car even if its turbo is going to have some itb's set up sounds so hot

[MBS206]

Adaptronic e420c ECU.

It runs either MAP, TPS or MAP crossed with TPS.

The mapxTPS is a special setup, first used on the 4AGE with the quad throttles.

There's issues with multi throttles and getting a good pressure source.

So Andy (Owner of Adaptronic) has a beautiful way to tune with MAPxTPS tuning.

Works beautiful for great power, insane throttle response, and economy!

[N/A MIKE]

Heres a pic of an sr20 with itb's into a custom plenum which is your second idea, i think it will end up being the easiest/cheapest and if set-up probperly i dont think you would loose that much throttle response, also easier to set up some sorta cold air feed

I think Im going with a R33 intake manifold, adapter plate, RB26 itb's, runners (undecided length), bell mouths, maniflold type plate (with bell mouths nicly set in), and im thinking CARBON FIBER manifold and 4" intake pipe down to a Q45 afm (or 2 ) and massive pod in a cold air box. I think I will run individual vacume hoses to a colector to use for brake/fuel pressure, Im going to see how the gtr's get around this + idle. Im doing it on the cheep for now as I think me jobs going up the s#!tter .

No job = more tinker time in shed :laughing-smiley-014:

More tinker time in shed = less cash money for toys

Less cash money for toys = less things to tinker with in shed

Less things to tinker with in shed = god forbid more time spent with the misses (this has its good and bad points, lets not forget wink.wink)

More time spent with misses = will lead to arguments over unenployment

and it will just spiral down from there realy

Found a thort inspiring page in the states though http://www.rossmachineracing.com/intakepartspage.html filled my head with ideas

Insperation from BMW and honda

[Eug]

BMW ideas would be the way to go, start with the E46 M3.

the main hurdle isn't the components required, it's the tuning and like you said the runner lengths.

ideally you would initially get adjustable runners and spend hours on end on the dyno to get it right. then you would get the CF ones fabricated at the set length. however the minute you change timing, fuel mixture, tune, etc. the lengths may need to be changed again. each variable affects one another differently and each time you modify the 'optimal setting' shifts.

that said, you would only do that if you were chasing the last poof-teenth of a kilowatt. most people don't care.