Honda D Series Forum banner

1 - 12 of 12 Posts

7 Posts
Discussion Starter #1
I got d16y7 fully built with hondata s300. The hondata is not doing shit not showing nothing. If i go to show ECU informantion nothing is in the blanks.Shuld there be? :(

1,137 Posts
fried bored. absolutely be sure that all your sensors are on properly. otherwise the mixed up voltages will fry the ECU or the S300 unit itself.

7 Posts
Discussion Starter #5
usb is hooked up, i am new at this,the motor was running fine before i put in the new car so i think all the sensors are on propely. heres my setup


d16y7 sleeved
cp pistons
eagle h beam rods
eagle crank

d16y8 vtec ported & polished
3 angle vavle job
new stainless valves

stock lx tranny (for now)
act clutch &flywheel

turbo setup
log manifold
2.5 icp
tial 38mm wastgate
greddy bov

hondata s300
innovate wideband

walboro 255 hp pump
dsm 450's with resistor box
aeromotive fpr and guage


1,137 Posts
ok is the map loaded on the board? i can walk you through all this very easily.
1: Remove the ECU from the vehicle
2: Take off the top ECU cover and remove the S300 unit.
3: Inspect the S300 for any signs of burn marks, broken traces, etc. and set aside for a few minutes.
4: Remove the bottom ECU cover and inspect the ECU top and bottom for any signs of burn marks, lifted or broken traces or components.

[NOTE: If any kind of damage or thought to be damage is seen in steps 3 or 4 post up pics before you do anything on your own. I'll help you out.]

5: If the ECU and S300 unit pass visual inspection place the bottom ECU cover back on the ECU.
6: Place the S300 unit back into the ECU carefully. Make sure that all the pins are in the S300 unit properly.
[NOTE: This was a problem on a friends car after multiple attempts to get S300 working. The board will feel much more snug and secure when its properly installed]
7: Leaving the Top ECU cover off plug the ECU back into the cars harness.
8: Turn the ignition key forward
9: S300 should light green.
10: Turn the ignition off for now.
11: Take your laptop with S300 on it and load a P28 stock map.
12: Go to Fuel Trim and change the Current Injector Size to 450cc, stock should be 235 or 240. I forget.
13: Save File As a different filename.
14: Now turn the key forward again without starting the car.
15: Go to 'Help' -> 'Update USB Drivers'. When its done you should get a Prompt about it being successful.
16: Go to 'Online', and 'Upload' should be an option if they are connected.
17: Upload your map onto the board, while its transferring a light should be flickering.
18: Try and start the car.
Now if all of that worked, and your car doesn't start... You have other problems my friend.
1 - 12 of 12 Posts