Hey guys, brief intro, my name is Lee and I manage a german car specialist shop here in northern nj. I bought a 2000 boxster with a blown 2.7l engine to swap in a 3.4 I had laying around.
Ive been very busy recently in the shop and havent had much time recently to work on my 3.4 swap...that along with the fact that ive also been dividing my free time to working on my 944 turbo as well...
So I came across this issue, the roads in my area arent the greatest, and im a bit skeptical of lowering the engine/transmission assembly 1.5". Im sure some of you guys in the south are wondering what im talking about, but the roads out here are HORRIBLE. I feel its really a
poor solution, especially for anyone who is planning on lowering their suspension in the future.
In addition to that, I have been talking to a few big Pcar tuners telling me my particular situation is difficult. Here are some road blocks to tuning my ECU :
1. I need the VIN for the 996 I removed the engine from, which I dont have.
2. When I offer to send over the ecu from the 996 engine so they can pull the VIN out of it, they tell me its another issue because the 3.4 has a cable operated throttle, and the 986 ecu is an egas throttle, and it can not be changed.
3. Then they tell me I should convert the car to a mechanical throttle setup, and use the 996 ecu in the car, but how would I get that to start with the 986 immobilizer blocking it??
So to avoid all this frustrating mess, I plan to install the engine with the 2.7 intake manifold installed, and find someone to tune it. But for the time being, the engine will start and drive with no issues.
The 2.7 manifold does not bolt on to the 3.4 heads, but Porsche did leave the mounting points blank, so you could actually drill, tap, and bolt the manifold to the engine. Im in the process of doing it, Ill take some pics, and post them up. The intake ports need some porting for the injector spray pattern as well.
I realize this will remove about 20hp from the motor, but its worth it if it keeps the lower part of the engine block intact over bumps. Maybe this is why the early boxster S 3.2 makes a lot less hp than it should? A restrictive exhaust system and
this type of manifold arrangement?
I wonder what the newer 987 intake manifold looks like... im pretty sure the engineers at porsche didnt want to mount the engine lower either?
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