Help. CEL won't go away after Engine Swap

[victoreric]

Originally Posted by Paul

Why aren't you using the 996 injectors? Are you running the DME as a 996?

I don't know why, but I guess I should be using the 996 injectors then? The DME was the original one from a 2002 boxster, (7.2?) but then I flashed it with Softronics conversion file so I don't know what it is now.

[Topless]

Caveat- ( I have never made this swap before) but it seems to me that if you have 996 displacement you also need a 996 MAF housing, 996 injectors and 996 DME software so everyone is on the same page.

I have more questions than answers at this point. Tholyoak is our resident motor swap expert as he has done many 996 conversions. Probably need to inventory all things on your car and look him up to sort this all out. Custom DME programming is probably the way to go on your car since the intake/displacement/exhaust no longer match any stock setup.

[tholyoak]

As I stated on Renntech, you need to contact Scott Slauson at softronic and find out how the mapping was done. This will dictate what MAF is needed. The 996 injectors are the same as the boxster. Without knowing how the 7.2 was remapped to run the earlier motor, everything else is just guessing. My only recommendation would be to ditch the 986 intake manifolds as this will restrict the breathing of the 996 motor.

-Todd

[victoreric]

Originally Posted by tholyoak

As I stated on Renntech, you need to contact Scott Slauson at softronic and find out how the mapping was done. This will dictate what MAF is needed. The 996 injectors are the same as the boxster. Without knowing how the 7.2 was remapped to run the earlier motor, everything else is just guessing. My only recommendation would be to ditch the 986 intake manifolds as this will restrict the breathing of the 996 motor.

-Todd

Ok. So when you say ditch the 986 manifold, then does that mean to use the manifold from the 996?

[tholyoak]

Yes, that is correct.
It isn't just swapping the plastic part either. The 996 manifold consists of the upper plastic component that bolts to the aluminum intermediate manifolds that in turn mount to the cylinder heads. The boxster plastic intake bolts directly to the cylinder head. To use the 986 fuel rails with the 996 manifold the mounting tabs for the fuel rails to the manifold need to be modified in position and height.
In order for the taller 996 intake to fit, both ends of the engine/trans system need to be lowered by ~1".

-Todd