ECT Mod

[Darren]

Is there a need to use premium gas after doing the ECT Mod?

As always, thanks for the help.

Darren

[Momz]

Just doing the simple ECT Mod should not require anything other than "regular unleaded".
If you have an aftermarket TW or an I/S ICM, then you might want to experiment whith higher grades of gasoline.

[98valk]

Is there a need to use premium gas after doing the ECT Mod?

As always, thanks for the help.

Darren

the only way to know is to read your plugs

http://www.4secondsflat.com/Spark_plug_reading.html

[Piper]

Is there a need to use premium gas after doing the ECT Mod?

As always, thanks for the help.

Darren

the only way to know is to read your plugs

http://www.4secondsflat.com/Spark_plug_reading.html

Not to add too much information but here is another:
http://www.dansmc.com/Spark_Plugs/Spark_Plugs_catalog.html

[Warlock]

Just doing the simple ECT Mod should not require anything other than "regular unleaded".
If you have an aftermarket TW or an I/S ICM, then you might want to experiment whith higher grades of gasoline.

Makes me wonder. 6 and 4 degree use higher octance. ECT advances 10 degree no higher octane
David

[RLD]

I tried the ECT mod and it pinged very easily on 93 octane, non ox. Went back to the 6 degree trigger, end of problem. 99 I/S. Others have no problems, and still others can't run the 6 degree on the I/S. All you can do is try it and listen carefully to your engine.

[Warlock]

I tried the ECT mod and it pinged very easily on 93 octane, non ox. Went back to the 6 degree trigger, end of problem. 99 I/S. Others have no problems, and still others can't run the 6 degree on the I/S. All you can do is try it and listen carefully to your engine.

I tried the ECT also and didn't like it. Got worst gas milage. Could have been my mods, but like yourself I went back to my 6 degree trigger wheel. Running a 4 degree on my Tourer cause I couldn't find the Airlake brand in the 6 degree.
David

[fudgie]

I had the 6 deg but then did the ECT. Seems peppier with the ECT. Yes mpg is down to 32.

[John U.]

Makes me wonder. 6 and 4 degree use higher octance. ECT advances 10 degree no higher octane
David

I agree with the concerns about an additional 10 degree advance. I did the ECT mod on a standard an loved it, though I installed the potentiometer so I could fine tune the advance or turn it off. I then changed to an I/S ICM and I was even happier to have the adjustability. I believe 10 degrees is too much even on a tourer or standard, and 2 degrees more of too much on an I/S ICM. I get my best power and mileage (better than without the ECT) at about half way advanced, based on setting the pot to 1/2 the total increase in idle speed when warmed up. That method is seat of the pants but I think it's close enough. I still use mid-grade, which costs about 10 or 15 cents more a gallon. At 2.75 for regular 15 cents is a bit more than 5% extra; cheap insurance.
As always, just one more opinion.

[Momz]

The ECT Mod is not a full 10 degree advance throughout the ignition curve.
It increases the advance until 3 -3.5K RPM and then returns to the OEM curve.
The ECT Mod fools the internal thermister into thinking the engine coolant has not reach full operating temperature, thus advanching the ignition to compensate up until that RPM condition.

TWs add a total (4 or 6 degrees) to the total ignition curve. Also fully advanced ignition curves with an additional fixed advanced may/with effect your high speed campabilities (loss of HP).
 

[Farther]

How does the Interstate ICM change the ignition curve?

[98valk]

How does the Interstate ICM change the ignition curve?

u can see the curves here

http://www.timskelton.com/valkyrie/tech/trigger_wheel_plus_dyna3000.htm

[Warlock]

The ECT Mod is not a full 10 degree advance throughout the ignition curve.
It increases the advance until 3 -3.5K RPM and then returns to the OEM curve.
The ECT Mod fools the internal thermister into thinking the engine coolant has not reach full operating temperature, thus advanching the ignition to compensate up until that RPM condition.

TWs add a total (4 or 6 degrees) to the total ignition curve. Also fully advanced ignition curves with an additional fixed advanced may/with effect your high speed campabilities (loss of HP).
 

I agree that after 2950 rpm the ect mod no longer is active. But for those who runs under 2950 which is around 55 to 60 mph you are still in the 10 degree range and damaging your engine.
David