Sorry, just to add, from what I've learned this is because on high boost/flow at full throttle the ITB butterfly's cause terbulance and uneven flow through the runner where you are trying to gain even flow (torque)JasonFriday13 wrote:I guess I wasn't clear enough: [When you put a big turbo on an engine,] ITB's become a restriction so on goes a big single.*84vvt wrote:I call bullJasonFriday13 wrote:"c ITB's become a restriction so on goes a big single.
They are just a pain to tune for Forced induction " ITB's" that is.
That's just what I have learned anyway, I wonder if there have been any tests done to check if this is true?
Running ITB's are good for response, because the throttle plate is so close to the valves.
I rarely blab like that on the forums, but I do it a bit more often when working on cars with other people.
My mate that has a drift shop has made a 15mm spacer to go between the head and ITB's to help with this problem on his single turbo high boost set up.
He said if he could he would stick with the twin turbo set up (running different upgraded turbos of corse) because they are far more responsive but because of twice the cost and twice the amount of areas for a fault to occur on a race car it's not worth it.
And the same goes for the throttles, if they weren't factory he would run a single plenum and throttle to make it far more simple.
In his words, "less shit there is on the car, the less shit there is to fix"
Intakes looking super clean though man! Would be interesting to see what you do later on, seems there's ambition and smarts for a good project
