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Old 08-15-2019, 08:15 AM   #21
steve99
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Quote:
Originally Posted by Ced67 View Post
Hello everyone,
I'm briging this topic up because I try to install the Delicious OFT flexfuel kit and I want to be sure of what I'm doing (with my installator which is used to the usual ecutek version of the kit).

Here what can be read in the kit description ( https://www.delicioustuning.com/OFT-FlexFuel ):

"For OFT, this kit features a flying lead wire that is to be routed through the right side firewall. The wire inputs ethanol percentage into the ECU via the CPC input wire located at the ECU harness..."

Read as is, it seems to be straightforward like any other kit: take the flyin wire and connect it to the ECU evap/cpc input using the green harness adapter seen earlier.

Easy...

But not that much!

My problem is that the kit does not feature any flying wire but instead the Delicious box output is connected in parallel to the rear O2 sensor which is still connected thanks to the kit passthrough.

Here are some photos of the passthrough :




I did a diagram for a clearer view of the current situation :


You can see that the ethanol output signal interfers with the rear O2 signal (grey wire). I remind you that the rear O2 is not suppressed with the OFT or Wayne variant roms.

Here what the kit should be, according to the description:


Before cutting the wires of my kit, I'm taking any advices

Thank you for your insights,
Cedric

Id check with deliceous just to be sure.


However your diagram seems correct . You pick up the positive and groumd from the rear 02 passthrough . But make sure all wires srill connect through to the rear 02 sensor so the ecu still see the rear 02 as normal . The signal wire with thte flex system voltage output need to go the evap input on ecu connectpr A35 pin 20.


Note if you have a 2017+ car you cannpt source volts or groumd from rear 02. Bit its ok on 2012-2016 cars
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