without needing to read the whole topic......yep, rob is correct, this is also the same infomation i have had direct from TTE..due to duty cycle, not there physical flow characturistics.and if you look through my posts over the years regarding this i have stated it before, hence why TTE never recomended the pulley upgrade on std cars......
So what you are saying is that the standard injectors are running at max then on a standard car.
As the s/c kit, in no way controls the air/fuel mix, its still using the same duty cycle that the standard ecu telling it to yes
All the s/c kit is doing is putting more air into the mix.
Now if you add pig/back ecu, then this can control the air/fuel better, as has been done on the turbo cars.
were not talking about piggyback ecu, you have even said it yourself, the supercharger does not control fueling all it does is ADD more air........exactly, hence running lean.
the ecu runs the ijectors at the cycle its programmed to do, no more, hence why TTE who designed the kit, also say the injectors are running at there max duty cycle with the supercharger.
remember TTE were never allowed to alter any factory settings, the supercharger had to be a plug and play option, the only addition allowed was a voltage clamp on manifold pressure....
Matt you last statment is the hole point.
From factory no car maker is going to have injectors running at max.
The is200 is running lean when you add s/c kit, yes is will, but the injectors are still running at factory settings, thats why.
So all i am saying is, if you add ecu to control the air/fuel, you will get more air/fuel from the standard injectors, you dont need to add bigger injectors upto 250bhp, just like has been done with the turbo cars
If you do that the injectors and the injector drivers are operating outside of their design parameters with regard to performance and reliability so it is to be avoided wherever possible.