My last effort

[XfireZ51]

Originally Posted by LGAFF

This car has Jeal cams which have ramps that open quicker than even regrinds...meaning overlap, less vac...confusing the MAP Sensor and O2s...meaning its going to run pig rich more than likely.....if you did not program the chip for the cams...there are going to be idle and fuel issues.

The O2s present an issue only if he's running Closed Loop. The MAP sensor won't be confused but it will move around a bit causing fuel and spark to change constantly.If the VE and SA tables aren't "smoothed", the motor will bounce around, ie surge as the cal moves from one cell to the other.