I would like to clarify my understanding of the VVT tables when it comes to the DOHC setup of my pentastar engine. These tables are totally new to me, but I’ve read everything I can find on it. The problem is that there seems to be conflicting information because of different engine setups, like from the V8 engines who don’t have DOHCs. If I have anything wrong here, please correct me. I’ll supply my stock tables as reference. (2016 Dodge Challenger SXT 3.6L Pentastar)
So first thing, because my engine is a pentastar with dual overhead cams, the VVT values for Intake and Exhaust can be modified independently of each other. This allows one to tune both for low-end torque and high-end horsepower independently as opposed to a single cam setup, where changes typically sacrifice one for the other.
There are 4 main tables to modify.
Airflow/Variable Camshaft - Intake Camshaft/Desired Angle and WOT Desired Angle
Airflow/Variable Camshaft - Exhaust Camshaft/Desired Angle and WOT Desired Angle
The Intake Cam Position table’s values represent RETARD values. (ie. value of 130 from 0 rpm to 3000 rpm is full RETARD of the cam. That would mean that a value in the table of say 126* in the last two columns represents a 4* advance?
On the other hand, Exhaust Cam Position table’s values represent ADVANCE values. (ie. the 117 values along the lower limits are full ADVANCE) So a value of 101 in the last column would represent retarding the value 16* from full advance?
Is that all correct so far?intakeVVT.PNGexhaustVVT.PNG