ECU Removal/Tank Removal - Yamaha FZ-09 Forum
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post #1 of 15 Old 04-16-2014, 11:43 AM Thread Starter
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ECU Removal/Tank Removal

I have searched for a thread on this and found a few pictures in the stoltec thread but nothing to answer my questions. I am going to be sending my ECU to stoltec for the reflash. From what Ive seen this requires a removal of the tank and then it appears that the ECU can then be easily disconnected. When removing the tank all of the tank lines have to be removed. What is the best way to do this? Do I need to drain my fuel tank completely to prevent spilling?
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post #2 of 15 Old 04-16-2014, 02:55 PM
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What differences is the reflash supposed to make?
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post #3 of 15 Old 04-16-2014, 05:22 PM
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in for a review of the reflash



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post #4 of 15 Old 04-17-2014, 03:12 AM
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No need to drain tank.

Best to have bike on stand, if no stand available make sure handle bars are straight.

Remove seat and faux air scoops

Remove 4 bolts holding gas tank to frame.

Lift tank from top side and disconnect 2 small drain hoses. Disconnect electrical harness

Lift tank from bottom side and remove fuel line (be patient, use finger tips to squeeze connected release buttons.)

Lift tank away

Disconnect 2 wire harness connections from ecu

Use one hand to unclip ecu clips

Slide ecu out of air box

Send ecu to stoltec

Installation is reverse process




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post #5 of 15 Old 04-17-2014, 07:42 AM Thread Starter
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Originally Posted by tunnelvision748 View Post
No need to drain tank.

Best to have bike on stand, if no stand available make sure handle bars are straight.

Remove seat and faux air scoops

Remove 4 bolts holding gas tank to frame.

Lift tank from top side and disconnect 2 small drain hoses. Disconnect electrical harness

Lift tank from bottom side and remove fuel line (be patient, use finger tips to squeeze connected release buttons.)

Lift tank away

Disconnect 2 wire harness connections from ecu

Use one hand to unclip ecu clips

Slide ecu out of air box

Send ecu to stoltec

Installation is reverse process




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Thank you sir! I just wanted to make sure when I disconnected the main fuel line I didnt make a mess in my garage.
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post #6 of 15 Old 04-17-2014, 07:44 AM Thread Starter
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What differences is the reflash supposed to make?
It takes away all of the jerkiness in the throttle and there are options to tune it so you can safely run an exhaust system. Stoltec has a great decription of what all it changes.
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post #7 of 15 Old 04-17-2014, 11:08 AM
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If you have a second pair of hands to hold the tank, you don't need to disconnect the hoses just tilt the tank to the side (careful not to touch the frame with the tank).

Sliding the ECU out just a bit makes it easier to unclip the connectors.
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post #8 of 15 Old 04-17-2014, 12:14 PM
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Originally Posted by Alley Oop View Post
If you have a second pair of hands to hold the tank, you don't need to disconnect the hoses just tilt the tank to the side (careful not to touch the frame with the tank).

Sliding the ECU out just a bit makes it easier to unclip the connectors.
Another thing to consider. If you have an anti stat bag from computer components, place the ECU inside this bag. It protects it from static electricity especially if you are using foam peanuts for packing.



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post #9 of 15 Old 04-17-2014, 12:18 PM
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Originally Posted by davidz28 View Post
Thank you sir! I just wanted to make sure when I disconnected the main fuel line I didnt make a mess in my garage.

No mess, however there will be small amounts of fuel that will spill from the fuel line. It won't gush out, but if you want to keep thing clean, wear rubber gloves and lay a shop rag under the fuel line.



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post #10 of 15 Old 04-19-2014, 11:00 PM
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Be very careful that you don't scratch your frame when removing the tank. I've had mine off twice for ECU and again for PENSKE shot. Put some rags between the tank and frame as your removing the tank.
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