Hello to all the members , my current setup is this:
B20b block (stock)
b16a2 head
itr cams , valve and valvespirngs
stock headgasket
compression ratio is unknown
skunk2 TB 70mm
B16a2 stock intake
Custom UEL header with 60/63mm full exhaust with 2 silencers and a cat.
Car on a maha dyno made 217.6Hp and 20.5kg of torque
Dyno is fully calibrated (we have no reason to doubt those numbers).

I recieved itbs , which will be installed soon but we need to figure out what kind of injectors we need to get.

The car has a limiter at 7815 , currently I am running stock b20b injectors (which not sure the size and stock FPR).
The duty cycle at idle is at 1% , 2.7ms injector duration and at limiter is at 100% , assuming ofcourse that the stock b20b injectors are 240cc.
Now , realistically speaking due to the size of the itbs and such we are guessing for the worst case scenario of 250hp not more (will be suprised if it even reaches this number or more).
The car is a daily driver and we want to keep idle characteristics of 800rpm and the limiter where it is at the moment.
I am located in europe so I was looking at DW 420CC injectors , RDX 410CC and some stock k20 injectors from Beck/Arnley 310CC which I am not sure that I wanna go that route.

I was leaning on the 410CC but I am not quite sure that they be stable at idle , (working at their dynamic range) which is calculated by ms
Does anyone have data on what are the min and max ms that they can work?
And if anyone has any experience with a similar setup that could keep the idle low and work as intented?

 

410cc from a Bosch style injector will be an absolute cakewalk to get a good idle out of. Even 1000cc+ injectors are very easy to get a smooth and reasonable idle from these days.
I've had a couple cars on 1000cc injectors (FIC and Injector nation) and idle was never an issue for me or the tuner.

I don't think you have high enough compression or big enough cams to get the most out of ITB's.

 

Thank you so much for the fast reply , sounds great then will proceed with the rdx 410s , in terms of itbs and cr , it’s true although some machine shops and mechanics believe that the hp number is due to higher cr 10.5~ but it’s unknown again. The manufacturer of the itbs insists that we ll see gains from low to top end but you are correct we will not see the max gains of the itbs unless higher cr and cams , will update once everything is done about the build and can tag you if you want

 

Sounds like an awesome NA build either way, I'm sure it's a blast to drive. Have fun!

 

True statement. Well said.

What do you expect them to say... our product sucks, it won't work in your case, but you should buy it ?!? They are the Manufacturer... they have a vested interest in enticing you to purchase their product.