The intercooler is not that big.
We were expecting the power we have on the wheels on the crank so we were also pleasantly surprised.
I think the following could be why we had better than expected gains.
1. Stock CR, dropping the CR already robes power.
2. Pulling the timing back by 5 to 10 degrees rob lots of power where with the stock management it is only retarded when necessary.
3. Running stock outlet manifolds optimize flow seeing that the turbo do not create a lot more backpressure than a Cat.
We are using a Gotech standalone management system to run the additional injector.
It is fully programmable and can actually run timing and boost control as well.
We opted to only use one additional injector seeing that it will cool the air down where it is situated as well as enrich the mixture.
The mixture is set according to Rpm and boost through the range. Currently we only enrich above atmospheric pressure.
This is old picks and everything doesn’t necessarily still look the same but it will give you a basic idea.
The 156 with the Black tappet cover actually runs on Gotech Pro-X standalone management and not the stock management. The car actually came to get the management replaced (owned did one jumpstart he shouldn’t have) and ended up with a Turbo as well. It’s not as strong as the white 156 but still strong enough to humiliate a C32 compressor AMG and other random so called fast cars with M’s and other things on the back.