I am swapping my hf(b15b1) for a si(d16a6) I need to know if my stock ecu will work for the si, or do I need a different one. Thanks I searched but found nothing for HF's.

 

change the ECU man, you will see more significant power gains.

Why go to the trouble of a engine swap and not run the proper computer.

-Eric

 

it will work fine until you can get your hands on a PM6 of PG7 for the A6. youll still be limited by the programming of the HF ecu, but it will work.

 

will throw a cel for EGR valve. Also ive seen it make the idle surge,plus you will have a 5400 rpm rev limit, but it will work in a pinch

 

Yeah, Im not going for power. I just need to swap this motor in for now, my d15 is blown. Whats the d15 ecu, a pg6, I forget. Anyway, I might look for the proper ecu if I can find it for cheap.

 

PM5 is DX ecu. not sure if it will work with MPFI since its just DPFI, whereas HF is also MPFI which is why it will work with the Si.

 

the hf one is a pm8.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote">PM5 is DX ecu. not sure if it will work with MPFI since its just DPFI, whereas HF is also MPFI which is why it will work with the Si.</TD></TR></TABLE>

As Tyson sez, the DX ecu will not run a MPFI (2) injectors vs (4). The HF ecu will run any MPFI application, although not the way it is supposed to be run. It will crank and run my B18, I tried it! Prolly very lean and with a very low fuel cut (5400 rpm) or so. I would get the correct ecu for my engine if I were you!
HTH
chris

 

Well, if I planned on running the engine for a long period of time, I would change the ecu. I just dont know if it is worth it to spend the money for a temporary deal.

 

i have an PM6 I just pulled, i just started my swap. Pm if interested.

 

So can you (with stock motor) swap the ecu in an hf to a si ecu