Help. CEL won't go away after Engine Swap

[victoreric]

I did an engine swap to a 3.4L (from a 99') after my 2002' 2.7 died.

After the mechanical was done, it drives fine, but the Check Engine Light came on. I then got the softronic software to flash my DME and it drives better, but the CEL still won't go away. I used the intake, injectors, and MAF from my boxster. Does anyone know if I should be using the ones from the 996 and is it possible?

Does anyone else know what I can do to get rid of the CEL?

[Loren]

You need to read the fault codes.

It might also help to read the numerous posts on engine swaps.

[victoreric]

You need to read the fault codes.

It might also help to read the numerous posts on engine swaps.

Sorry forgot to mention the fault codes. It's reporting P1128 and P1130. I checked into this and it's saying that it's running lean and possible leak somewhere. I also searched through the engine swap posts and couldn't find anything similar. These codes were the same before and after the Softtronic conversion. I thought that the conversion would get rid of it but it didn't.

[victoreric]

Does anyone know if I should be using the 996 MAF because I did the engine swap?

[1schoir]

Does anyone know if I should be using the 996 MAF because I did the engine swap?

I remember reading that the new Boxsters had a different (less prone to fouling) design than the early Boxsters. I think Loren actually posted diagrams of the two different types of MAF's.

It's possible that the 996 MAF is of the newer design type. It's worth looking into.

What year is the 996 that the 3.4 came from?

Regards, Maurice.

[Loren]

For series 996:

MY99 C2 (non-egas) uses 996.606.123.00 (and there is no upgrade)

MY99 C4 - MY01 (all egas cars) use 996.606.124.00 (and there is no upgrade)

MY02 and newer (egas and 3.6 liter) use 996.606.125.01 (and there is no upgrade)

So which intake are you using with which MAF?

[tholyoak]

You need to talk to Scott at softronic and figure out how the mapping was done to get your DME to work with the older motor. This will dictate whether the early or late MAF is used as well as provide some insight into what could be causing the lean running condition. Without that information you are just guessing.

-Todd

[victoreric]

Does anyone know if I should be using the 996 MAF because I did the engine swap?

I remember reading that the new Boxsters had a different (less prone to fouling) design than the early Boxsters. I think Loren actually posted diagrams of the two different types of MAF's.

It's possible that the 996 MAF is of the newer design type. It's worth looking into.

What year is the 996 that the 3.4 came from?

Regards, Maurice.

The 996 was a 99'. My boxster is an 02'

[victoreric]

You need to talk to Scott at softronic and figure out how the mapping was done to get your DME to work with the older motor. This will dictate whether the early or late MAF is used as well as provide some insight into what could be causing the lean running condition. Without that information you are just guessing.

-Todd

Ok. thanks.