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ECUflash Speed density with ecuflash

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yepes281

15+ Year Contributor
971
2
Mar 22, 2009
H-Town, Texas
One of these are nice to simplify the install and makes it easy to swap back if needed.

FULL THROTTLE SPEED - Speed Density Harness for 2G/3S w/ Pro

Just FYI. using this harness and Ceddy mods you will have to make some wiring rearrangements at the ecu (at least one wire). that may make it just as difficult as cutting and splicing the gm connectors in. that is assuming that Ceddy is using the MDP for the map input and not the baro.
 
So your saying to just go ahead and splice it in directly instead of using the harness?
Im lost.. i was just gunna buy the sensors i needed and then figure it out from there.. :confused:
 
So your saying to just go ahead and splice it in directly instead of using the harness?
Im lost.. i was just gunna buy the sensors i needed and then figure it out from there.. :confused:

well, yes and no... that decision is going to have to be made by you. i am assuming that you are going to be using Ceddy mods with speed density? if so i am pretty sure that Ceddys SD patch uses the signal that would be the MDP on the top of the intake manifold for SD, you just replace the factory MDP connector with the GM one and tune away (i can’t get to Ceddys web page to verify this right now). the wire adapter that you can buy from full throttle speed was originally built for use with the MAFT Pro and without downloading the manual for it i am not sure if they use the wires for the baro signal or the MAF signal, but you can use it you just need to make some changes.

so basically you have two options.

1) use the wire adapter from full throttle and climb under the dash, disconnect the ECU, pull at the very least 2 wires and swap them (MDP signal and BARO) reconnect the wire and go.

2) splice in the GM connector to the three wires for the MDP on the top of the intake manifold and the two wires for the IAT sensor from the factory MAF connector...

but here is what you need to remember when making your decision. to make tuning SD easier you will need to run both the GM MAP sensor and the factory Mitsubishi MAF sensor in order to tune the VE table before you completely remove the MAF from the car... (you could probably make option 2 a temporary solution until you get it tuned in them swap out to the full throttle cable but that would be spending more money than you need to in my opinion)
 
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