185 AFM on 165? And FCD.

M

MWP

New member
Hi all,

I'm asking for a friend...

Will a 185 AFM work ok on a 165?

Also what type of FCD is needed for a 165?
Or can you just unplug the map sensor like on a 185?

Thanks!
 
M

MWP

New member
Had a look at his car tonight... there is no MAP sensor ??

... so i gather it shouldnt have a boost cut at all?
 
M

Mafix

New member
in short no a 185 afm is different.
the lack of boost pressure sensor isn't a good thing. need to replace that too
 
M

MXP_57

New member
Is your mates got a jdm st165 or engine?

The first jdm series of st165 (like mine) didn't have a turbo pressure sensor. The fuel cut is calculated based on the afm signal and air temp... so you cannot get around the fuel cut without changing to different ecu.
 
M

MWP

New member
MXP_57":1u09i6wf said:
The first jdm series of st165 (like mine) didn't have a turbo pressure sensor. The fuel cut is calculated based on the afm signal and air temp... so you cannot get around the fuel cut without changing to different ecu.
Click to expand...

Ah ha, that makes sense.

Yes, it is a JDM 165 engine now installed in a 162.
I guess itll be a RRFPR and piggyback for him then to get around it.
 
M

MXP_57

New member
No it will be waste of time.
Just convert to an st165 usdm ecu It just take a couple of wire to move/cut.
or st185 same (you can keep the st165 afm)
or st205 (best option) along with some 550cc injectors.

I've done all the conversion on my car. :D

Depends what you plan to do with the car.
 
M

MXP_57

New member
also on the stock ecu you wont be able to boost much maybe 9 psi... depends on air temp and flow... it's really annoying and not always the same...
 
M

MWP

New member
Awesome, thanks for that info, ill let him know!

I have a spare 185 ECU and AFM, so maybe ill be able to sell those ;)
 
M

MXP_57

New member
Also if you want to put the st185 ecu. you don't need anything.
For the pressure sensor, just feed the PIM pin of the st185 ecu with a voltage that doesn't go higher than fuel cut. (i think i spliced it on the water temp sensor.) you can check the voltage range in the BGB.

The turbo pressure sensor (tps) does not affect anything. It's just for fuel cut.
 
M

MWP

New member
So he had a workshop install the 185 AFM with the 165 ECU, and tuned it (4hrs apparently on a dyno).
It was on a different dyno today for a power run (a club event)... it sat at under 9:1 AFR while on boost :bangshead:
Super rich, not happy.

So hes now considering the 185 AFM & ECU swap.

Any more details on what needs to be done to the loom?
Does the 165's loom plugs fit the ECU?
What pins need to be moved?

Thanks!!
 
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