Exhaust Connected
Exhaust Connected
The car was a bit loud with just the open downpipe. Not to mention, the open downpipe was pointing directly at my steering rack. So I finally pulled the downpipe off the turbo and cut it down some, then welded this piece of 2.5” pipe with a 45 degree bend in it to it. Then I went under the car and cut off the old turbo flange and welded this downpipe to that. It all worked out pretty well actually. I’m still learning to use my mig welder, and I’m using flux core wire, but it turned out pretty well. May not be a perfect seal, but it’s good enough for now. And I saved a fortune doing it myself. I still need to come up with a down tube for the external wastegate, but it’ll probably be fine leaving it wide open for the time being.
Sunday, July 25, 2010
That board is the “GPIO”. It’s essentially a do-it-yourself, do anything, board. It’s got an MS2 CPU on it, and it’s meant to connect to a MegaSquirt via CAN. This is the board I will be controlling my electronic transmission with. It may not look like it’s got many components on it, but I’ve actually got all the circuits needed for my transmission, and like 4 spare high current output circuits, in the above picture.
There are two different firmwares that I can run on this. The one I had planned to run on it, was called “MegaShift”. But for a half dozen different reasons, I’ve decided to go with the other firmware, I believe it’s called “MicroTrans”.
MicroTrans is written by James Murray, one of the two developers of the -Extra firmware on the MegaSquirts. His code was originally written before the GPIO existed, to be run on the MicroSquirt module. It’s since been adapted to work on a plain MegaSquirt II/v3 board, and it’s now getting adapted to the GPIO board as well. It was also originally written for the GM 4l80e, but with some documentation I provided to him, it will soon support my Chrysler 41te as well.
I’ll definitely be covering this more as I start wiring it in and testing out the new versions of the firmware.
