S5 turbo ecu with S4 na harness

project86 · 02-15-2011, 09:45 PM

Thanks Ted

No im not looking for magical anything.. im gonna i have an S5 turbo ecu but not the harness. Im more than likely getting an S5 engine from a friend of mine and i just wanted to see if what i had would work. i just want to run a close to stock turbo car for now until i can afford my actual build. Then ill be doing standalone and all that fun stuff.

Ill just source an S5 harness and call it good then i suppose.

RETed · 02-15-2011, 09:53 PM

One other problem...
The programmed overboost fuel-cut might be a problem.
Since your non-turbo pressure sensor runs the whole range of 0-5V, you can trigger the overboost fuel-cut on a turbo ECU...

-Ted

chibikougan · 02-15-2011, 10:05 PM

I think I might still have my n370 boost sensor. I don't remember if I sold it or not. I will look tomorrow. Matt must have still been using his S4 ecu w/ s4 na harness w/ s5 motor. I don't have a clue anymore. I just tried searching through the 80 page Montana thread to find what he did and my brain hurts. There is some funny shit it in there though.

chibikougan · 02-15-2011, 10:08 PM

You can have fuel cut removed from the Ecu like kyle did also. You can't use the S4 harnesss on an s5 ecu because the plugs are different. You will also need the Boost Pressure sensor. I don't believe he is saying the harness will cause this you just need the proper pressure sensor.ReTed?

02-15-2011, 09:45 PM	#1
project86 Can't.Make.Up.My.Mind. Join Date: May 2009 Location: Murfreesboro, TN Posts: 1,377 Rep Power: 18	Thanks Ted No im not looking for magical anything.. im gonna i have an S5 turbo ecu but not the harness. Im more than likely getting an S5 engine from a friend of mine and i just wanted to see if what i had would work. i just want to run a close to stock turbo car for now until i can afford my actual build. Then ill be doing standalone and all that fun stuff. Ill just source an S5 harness and call it good then i suppose. __________________ '90 GTUs Stay up to date with my photography '06 Toyota Highlander Hybrid '10 Toyota Prius "Initial Success or Total Failure"

02-15-2011, 10:08 PM	#4
chibikougan ⊙⊙ Join Date: Dec 2009 Location: Great Falls Posts: 1,258 Rep Power: 17	You can have fuel cut removed from the Ecu like kyle did also. You can't use the S4 harnesss on an s5 ecu because the plugs are different. You will also need the Boost Pressure sensor. I don't believe he is saying the harness will cause this you just need the proper pressure sensor.ReTed? Last edited by chibikougan; 02-15-2011 at 10:12 PM.

02-15-2011, 10:05 PM	#3
chibikougan ⊙⊙ Join Date: Dec 2009 Location: Great Falls Posts: 1,258 Rep Power: 17	I think I might still have my n370 boost sensor. I don't remember if I sold it or not. I will look tomorrow. Matt must have still been using his S4 ecu w/ s4 na harness w/ s5 motor. I don't have a clue anymore. I just tried searching through the 80 page Montana thread to find what he did and my brain hurts. There is some funny shit it in there though.