I made a tester to determine what is wrong with the drive-by-wire system in my 360. We deduced that the failure was with the throttle bodies (TB), one or both. The ideal thing would be to buy two new throttle bodies and an accelerator potentiometer (AP) and just replace everything. That's probably what would happen if I brought the car into a Ferrari dealer and probably most independents too. I didn't want to just go spend $4000 on parts. A TB for the 360 is $1750 at Ricambia, and I need two. Plus another $400 for the AP just to be sure. I spent a lot of time figuring out exactly how the drive-by-wire functions. It's really quite interesting how the system works with several levels of checks and balances. It's an important system with important safety considerations. I had two goals for this project: 1. Determine what's wrong with the existing set of TB's. 2. Determine if they can be repaired or rebuilt rather than just replaced. The tester is based on an Arduino with an LCD, SD card, and the usual input and outputs of a stock chip. The software was a lot more involved to setup than the hardware. I was mostly concerned with these things: 1. Are all the gears and moving parts fully functioning? 2. Are the potentiometers (there are 2) working properly? 3. How much lag is there from zero to full throttle? 4. How much power does the motor consume? Once I got the program up and running with an old TB from my 360, I run it on a new one and an eBay special for the 360. Here's the graph from the data: Image Unavailable, Please Login The volts are from the TB potentiometer #1 which goes from low to high volts as the throttle plate moves. The line chart above is taken from 5ms data and is very clean. The line stops when full throttle has been reached. As indicated, the new throttle body had considerably less lag going from idle to full throttle. The two old ones nearly matched each other in lag. Both were from similar mileage and year cars. I'm left wondering if this throttle lag would detract from performance of the car? Rebuilding... After careful visual examination, I determined that the only difference between a run of the mill Bosch 0 280 750 XXX and the one for the 360 (an "038") is a vent. This is the one that pumps oil into your intake if you overfill your car with oil. Besides that one little physical difference, the series of TB's that the 360 is part of are virtually identical. I found a nice TB for a Porsche on Amazon that had the exact same dimensions as the 360's TB. It's a model #474 (vs. 038 for the 360). Same size everything. Same connector. Same mounting holes. Could it be a source of spare parts? At less than 1/10th the cost of the #038, worth looking into. My next project will be disassembling the old eBay specials I bought and rebuild them with new parts from the Porsche TB I got from Amazon. I'll know the answer to this question soon.