f22a6 ecu?

[kart11]

for the a6 manifold swap on the the a1 which ecu do u need the pt6a51 or pt6a52

[accord junkie]

im not sure what the diff is but i do know that its prob not much there is a site i found once that listed all the ecu's used in all our cb's just google 1990-1993 honda accord ecu or something like that the chart will help.

[wed3k]

umm, but pt6 isnt even in the chart you listed...

[ExCoupe92]

I didn't think you needed a new ECU after you performed the swap? Wouldn't that make it run richer than it needs to be? I think you should wait until you swap out cams for a new ecu. A6 cam FTW

[wed3k]

I didn't think you needed a new ECU after you performed the swap? Wouldn't that make it run richer than it needs to be? I think you should wait until you swap out cams for a new ecu. A6 cam FTW

quite possibly...im running an A6 motor with a PT3 ecu and iam basically stock but can only acheive a max of 24mpg.

my timing is good and my plugs look cherry though

im tempted to downgrade my cam because this cb7 is my DD...i have my other cb7 for racing :o

[ExCoupe92]

your going to downgrade the cam in your a6? What would be the point of that?

[deevergote]

The PT3 or PT6 won't make that much of a difference in fuel economy. Putting an intake on your car and running either stock ECU will make much more of a difference.


You need the PT6 to properly operate the IAB system (the "butterflies" that open the secondary runners). You CAN hook it up strictly by vacuum, I believe... but it works best when it's plugged into the proper ECU. Since the F22A1/4 don't have IAB, the PT3 is not equipped to control it. Without that part of the manifold properly functioning, you lose just about all of the gains you'll see with the manifold swap.