![[ProjectSTi]](https://blogger.googleusercontent.com/img/a/AVvXsEgqVanZg9w-c4hS30-vwmY1vqbhTqkAlpb0a2RMSq9lGDlNvjWa6PF_M3Dcb_y6Lzef4wChPlx3cJivdW2n8v3tjZ8PrUJzH4D7Ktx4Jhzz0H0hrUmEXP80ofkZt9y5xM1irMQWm787FTXxzia9UsFrNI3MwfiwgLlTpAO-55uip-USRGdOW4WYicZieO0=s174)
I know I always said I wasn't going to modify the Type R....then I got an Nur Spec exhaust and Apexi ECU. These are all sensible for the following reasons:
A subaru isn't a subaru without the Burble.
Its not safe to drive the car "properly" on UK fuel whilst running a Japanese ECU for Japanese fuel.
Hence the Apexi ECU.
Now that I have justified that much....
A HUGE thanks to Pete....you know who you are, who has remotely help me analyse the logs, over a glass of wine on my part....and told me how to get going and what to tweek.
I did some good pulls in 4th gear with the FC Edit software running. As its a *steep* learning curve, my first mistake was to only wire the 5v signal from the wideband into the FC Datalogit box. After a full boost pull in 4th gear, the gauge was showing an AFR of 10. The Software was logging 12! Not good. Ill get the wire cutters out tomorrow and rewire a new ground signal into the box to take care of the error.
Next up, I floored it in 4th, from 2000rpm the whole way up to redline. Once on boost, I got an AFR of 10.....exactly what the fuel map was demanding. That means the MAF and fuel pump are good so far....
Anyway. Now that I had some base readings, Peter found that there was increased Knock in the boosted region of the map. Not good; Knock kills engines.
So the next step was to pull timing in this area and smooth it all out. The Ignition map is starting to take shape, but the next step will be to load it into the cars ECU, and do a few more pulls, log the AFR and knock, then try to lean it out a little bit at a time.
The beauty of FC Edit is that you can "compare" one map against the other and see what areas you have modified and by ho much. Handy to keep a track of changes as you keep tweeking things.
A subaru isn't a subaru without the Burble.
Its not safe to drive the car "properly" on UK fuel whilst running a Japanese ECU for Japanese fuel.
Hence the Apexi ECU.
Now that I have justified that much....
A HUGE thanks to Pete....you know who you are, who has remotely help me analyse the logs, over a glass of wine on my part....and told me how to get going and what to tweek.
I did some good pulls in 4th gear with the FC Edit software running. As its a *steep* learning curve, my first mistake was to only wire the 5v signal from the wideband into the FC Datalogit box. After a full boost pull in 4th gear, the gauge was showing an AFR of 10. The Software was logging 12! Not good. Ill get the wire cutters out tomorrow and rewire a new ground signal into the box to take care of the error.
Next up, I floored it in 4th, from 2000rpm the whole way up to redline. Once on boost, I got an AFR of 10.....exactly what the fuel map was demanding. That means the MAF and fuel pump are good so far....
Anyway. Now that I had some base readings, Peter found that there was increased Knock in the boosted region of the map. Not good; Knock kills engines.
So the next step was to pull timing in this area and smooth it all out. The Ignition map is starting to take shape, but the next step will be to load it into the cars ECU, and do a few more pulls, log the AFR and knock, then try to lean it out a little bit at a time.
The beauty of FC Edit is that you can "compare" one map against the other and see what areas you have modified and by ho much. Handy to keep a track of changes as you keep tweeking things.
Comments
Post a Comment