I'm finishing up my s4 n/a to s5 turbo swap and was wondering if I'm going to want a s4 or s5 turbo boost sensor. I'm thinking s5 to go with the motor. If that is so will it plug into my s4 n/a harness? From the pics I've seen it looks like it will.

Thanks in advance for the help.

 

Boost sensor (and TPS, AFM/MAF and injectors) should match the ECU

If you are going to use S5 ECU, use as well S5 sensors....

 

I'm using the an s4 n332 ecu. So I need the s4 boost sensor then? Great I can find s5's all day on ebay but no s4's... And also I want the n318 boost sensor right?

 

If you are going to run it on N332 ECU, ten you need N318 (S4 TII) boost sensor, S4 TII AFM, S4 TII TPS (preferrably whole S4 TII throttle body for easy mounting....and S4 TII injectors...

You need to check if they need injector resistor pack or not, there were both versions available for S4 TII (low impedance injectors + resistor pack or high impedance injectors without resistor pack)

Everything else is same (air temp sensor, knock sensor, engine coolant temp...)

 

I have all that except for the injectors. I couldn't find s4 injectors anywhere so I cut off the outer part of the harnes plug and they plug right in. If I have the s5 injectors I don't need the resistor pack correct? Thanks so much for the help man.

 

You need to check injectors resistance, if they are low impedance, they need resistor pack, if they are high impedance,they dont.....

 

Cutting all of the plastic off the outside of the injector plugs will make them fall off easily. Did you leave anything to grasp the tab on the injector, or is it all gone?

All S5 injectors are high impedance, so you need to be sure the S4 harness you have is either intended for use with high impedance injectors ('87.5-'88) or has the injector pack plug bypassed ('87-'87.5). To bypass the pack, just jump all 5 pins together with some short wires.

 

I'm figureing out how to make the injectors stay pluged in. I have a couple ideas. The clips were pretty messed up anyways so I said **** it. If I have the injector pack plug where would it be located? Thanks again for the help.

 

Under the air filter, u can see yellow plug and part of the resistor pack bolted to the wheel well