Thread: Happy knob available again at ZZP

ZZ Performance

Seen it on the other forum. Figured Id post it here aswell. I just ordered one

man i wish i would have gotten mine working.

timing changes on the fly are....literally amazing.

Originally Posted by JbrownGTP

So this may be a stupid question, but the website says that this will only work IF your pcm is setup to run it. How exactly do you set it up? Is it a special tune or is this just plug and play?

You need to adjust your Intake air temp spark modifier table to utilize this

you have to open up the IAT tables to change timing at the appropriate amounts according to where you have the knob, which is hooked up to the IAT sensor.

a happy knob is essentially a 10 step potentiometer.

you have to tune for it, otherwise it's useless.

no, you just need to tune for it once. then each spot on the dial means a certain timing level. then you can play with it whenever you want.

so you would have to make timing changes in the air temp spark table?

Originally Posted by 99prixgt

so you would have to make timing changes in the air temp spark table?

Im not sure how DHP's laid out but this is how it looks on HPT


Grrr red X IAT.jpg picture by onequickfamilysedan - Photobucket Click the link <But to answer your question. Yes you need to make changes to that table so when you adjust the knob it pulls or adds timming to what you added on the table

oh, gotcha

So say you click the Happy knob so the IAT reads 32 degrees to the PCM, It will add or deduct what ever you put into that table under 32 degrees(not sure of the actual degrees each setting on the knob is yet) It has 7 settings for different temperatures.

hmm might be useful for my 97, then i can run regular gas without getting out the damn lap top

Like said above, it basically plugs in and takes over your IAT table to add the spark. It's just a board with resistors on it that will register as different degrees of temp. when plugged in. You have to change the iat table in the pcm or it won't add any timing. Once changed, it will add on however much timing you put in the iat table, on top of the base timing.

The other way of doing this would be to run a wire from your IAT to the cabin and put a switch on that wire. Then modify your tables so when the switch is "on" or your IAT is plugged in, it will add 2* of timing or so. Most of the time you will be only making 2-3* adjustments anyway.

Another way for turbo cars is to turn the IAT into an anti-lag switch. Setup the tables so it retards timing when plugged in and have it wired as a push button setup. You drive up to the line, push the button and build up some boost without leaving the line or pushing past the beams. Release the button when you launch or have traction.



Can't upload file on here, don't accept xls, doc is too big, pdf is too big so this will have to do:

Code:

	Degrees C -40	Degrees C -30	Degrees C -20	Degrees C -10	Degrees C 0	Degrees C 10	Degrees C 20	Degrees C 30	Degrees C 40	Degrees C 50	Degrees C 60	Degrees C 70	Degrees C 80
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Mg/Cylinder 680	0	0	0	0	0	0	0	0	-1	-2	-2	-2	-2
													
													
													
	Degrees C -40	Degrees C -30	Degrees C -20	Degrees C -10	Degrees C 0	Degrees C 10	Degrees C 20	Degrees C 30	Degrees C 40	Degrees C 50	Degrees C 60	Degrees C 70	Degrees C 80
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