I getting to dislike the Flood Protection...

P28, it's what I have...

 

P72 = knock sensor...

Will

 

true will, but when they chip the P72, doesn't the program disengage the knock sensor anyway?
--justin

 

not sure...

I would hope the knock sesnor is still working... what gain would be had from turning it off?

Will


[Modified by Willard, 12:15 PM 2/28/2002]

 

Nope, it's retained...I know that there are a couple of good threads around here about knock sensors and hondata...just don't have the time to wade through all the topics, while pretending to work

 

ECUs equipped with knock control disable the sensor above 5000rpm due
to excess noise. Honestly the cost of a P30/P61/P72 ECU isnt worth it when
a P28 does the job just as well for less than half the cost.

And the knock control under 5000rpm is crap when compared to something such
as a J&S.

 

"while pretending to work"



I have a p-28 because it seems to be easier to find.

 

Regarding Hondata, I heard the P72 is capable of more "fine tuning" because it is 15x15 maps compared to 10x10 or 12x12 of the P28.
Any truth to this?

 

p28, much much cheaper. does the same thing

 

No.

 

isnt the p72 a gsr ecu that controls the dual butterflies? dont type r's have single butterfly on the throttle body? thats why i thought you wanted a p28 over a p72

 

p72 has the IAB control, yes - but having it connected or not isn't required. The ITR doesn't have IAB's therefore the ecu doesn't control them. The IAB is on the GSR intake manifold.. not on the throttle body.

There's only 2 reasons distinguishing the difference between the p28 and the p72:

p28 = cheaper
p72 = knock control

Thats it.

 

P-28, easy to find, readily available, and due to that is less than half the price of a P72 in most cases.
Knock sensor would be fine, but being disabled at 5000+, does not seem worth it to me...

Jason

 

excuse the ignorance.. but what exactly does the knock sensor do?