hey everyone, here's an update on tuning the 1.3 NATS ecu.
With all the engine mods complete it was time for a remap.
Back in June I contacted Ed at fusion motorsport about remapping the 1.3 nats ecu. He didn’t have any boards available due to high demand so I had to wait till August before he was ready.
I popped down to surrey and began work on the ecu. A nistune type 4 board was soldered to the ecu, uploaded the k11 image map and tried to start it but it didn’t run. The engine light didn’t turn on during ignition except during limp mode so something wasn’t right. We tried all sorts and nothing worked. It was getting late so I had to go back home for work. Ed sent my ecu map to nistune to sort it out and so I’ll have to go back another day.
20th november I made it back down to surrey for the 3rd time to get this nistune board working. Ecu out, ed sorted out the programming and hey presto it finally works after 4 months of work
Drove to the dyno, hook it up, Ed programming the ecu while charlie runs the car.
On the stock first run it managed 85hp. The lower graph is power and upper graph is air/fuel ratio.
The wondering power line verified the numerous flatspots I felt through the revs. The stock fuel ratio was also quite lean prob cos its breathing more air from the intake & exhaust mods.
So the CAI, k&n filter, JUN flywheel and janspeed exhaust system gave a 11hp increase with a stock map
After several runs, Ed increased and smoothed out the overall power upto 92hp and torque is improved throughout the revs. The upper revs showed the most increase cos the engine can breath more easily and boy does she love to rev
Red is stock map, blue is new map.
Here’s a graph of the power and AFR. The mixture was richened up to improve power & torque
Here’s the nistune board
Connector ribbon soldered to the ecu
Underside of board
Topside of board
With the nistune board screwed on top of the ecu casing, the flat lid can’t be fitted back
So I dremeled the surface down afew mm
Now the board sits further lower
To reinstall the lid
On the way home I did an economy trial and it did 45mpg from travelling 70mph and also heavy congestion on the m1 etc which is the same range as before the JUN flywheel & janspeed catback exhaust
2nd trial was for hard urban driving, full throttle and high revs for short commutes and it did 38mpg, very good
Thanks Ed & Charlie for the stella remap
I’ve ordered a nissan consult cable, datascan and datalog viewer from BliZt to check on the sensors in future. Awaiting delivery.
