E38 flex fuel pin. 12649046, E85 tables populated, switched multifuel on and actualsensor on. Oct 18, 2016 · Locate pin 38 and simply remove the gray plug with a pair of needle nose pliers. Mar 15, 2011 · All these tables, and Pin 40 on the E38 ECU seems to be where the flex fuel sensor goes. Aug 17, 2025 · Has anyone ever read the voltage at pin 40 on your E38 ECM? I'm having an issue with my flex fuel sensor and was wondering if that was what I should be seeing. My question is more related to which pin do i connect to in the e38 Mar 19, 2016 · C6 Forced Induction/Nitrous - Help with flex fuel sensor input location . Note: Removing all of these will result in a non-emissions friendly harness. This should be the same process for any of the E38 VCM (vehicle control module) Aug 1, 2007 · {B5145} Flex Fuel (Ethanol) Spark Multiplier:For blending between ULP and Ethanol fuel. Crimp the female pin to the wire. This is ideal for people who don't need the plumbing side of things because they're using an aftermarket fuel system or just want to do things their own way. The actual range the E38 reads is around 20Hz to 190Hz or something like that, but the composition range runs 0 @ 50Hz to 100% @ 150Hz. When checking out, select which ECM you have from the drop down below (most will fall in the E38/E67/E92 category). Flex Fuel sensor part number (my favorite, OEM, cheaper and more compact) Connector part number (cut the end off and use the 3 existing wires) sensor pigtail has a black (ground), pink (Power), and a white (ECM). I read this with a meter. If you did this right, you can use the E40 to control both spark and fuel when running the gas. Jun 30, 2016 · C6 Corvette ZR1 & Z06 - E85 How-to/Information - I'm about to do a Flex fuel conversion on my Z and I'm looking for some pics or diagram on which Pin do I tap-to on the EEC. Disconnect the J1 connector from the PCM. Anywho does anyone have a idea of what it is? I Camaro Flex Fuel I enabled flex fuel in the tune, and put the sensor into place. It outputs 62Hz right now, indicating that there is a small amount of alcohol in the fuel. DSX Tuning - Authorized HP Tuners Dealer This is a GM Flex Fuel sensor with a custom made harness. Pin 40 on X1 is being used. Solder if you feel necessary, but keep the solder on the crimp only. E38 os. This is a 73 pin connector, and is on the left if looking at it on a Corvette. - I have tried searching for the ethanol content input location/pin , I can not seem to find the information I need . So if you were to send the appropriate signal to the Ethanol sensor pin, you could force the ECM to use the Ethanol tables for NOS. Information on the 411, E38, and E67s seems to be out there but not the E40. Any idea where I should be looking for the Can anyone point me in the right direction for information regarding the retrofit of a GM flex fuel sensor wired to PIN 40 of my E38 PCM? I am contemplating adding the sensor to my 08 Z06 so I can run E85 and other fuels without having to run multiple tunes. Each pin, each connection, bears the weight of this responsibility, shaping the dynamic equilibrium that defines your driving experience. What you have to do is try all four 'sides' of the socket until you are able to fully insert the additional new pin. Beneath the surface of the E38 ECM’s pinout lies a wealth of insights into the inner workings of your vehicle. Pin 40 is the Flex Fuel frequency input (shown below). PAY ATTENTION, for whatever reason, TRUCK and CAMARO have two pins swapped on gas pedal, D and F. This would be a more custom install in terms of doing my own plumbing of fuel lines and I don't have the evap anymore but do still have wires if need be. added GM sensor to fuelline connected output to E38 pin 40, it shows 4kOhm resistance against ground so assume its OK. Route the Flex Fuel sensor signal wire to the ECM connector and install the pin at the 38 location. Alcohol content is still 0%. Jan 15, 2020 · The issue is that you are trying to insert the pin into a socket that's already occupied by the mirror's pin. A how-to, pics, or any other pertinent information will be greatly appreciated!. E38 ECU. Feb 15, 2016 · Since the E40 seems to be the red headed stepchild in the LSX world I'm having a very difficult time finding out which pin on the ECM is used for the GM flex fuel sensor. Tested this on several different E38 OS's from 06 through to 08 and the pin number and results are consistent. BLOCKS HIGHLIGHTED LIKE THIS, ARE WIRES THAT CAN BE REMOVED FROM PCM CONNECTORS, NOT NEEDED. Dec 7, 2020 · C6 Tech/Performance - Flex fuel sensor install - So wondering if someone could help me with this. But I don't see anything when scanning. So that's the overview of how to manually adjust ethanol content on the fly. In this video I install a flex fuel alcohol content sensor on the Corvette. In the notes for your order, please specify the length of wire What is the EFILive E38 / E67 Ethanol Custom OS? EFILive’s E38 / E67 Custom ECM operating systems are modified versions of the factory ECM operating system that gives users the ability to use the factory ECM to perform functions beyond what was available in stock form. Oct 26, 2016 · flex fuel ecm what harness for pin 40 Forced Induction - V8 Apr 5, 2013 · First, disconnect the battery. 2009 c6 m6 Any help greatly appreciated , I have a custom fuel setup with a gm sensor ,not a kit. vcw xci ouc dfr cfa hwf yaq bne nwb mvz ldq qns chu bpi lvp