Powerman5115

iTrader: (5)

I have my RPM switch set to engage at 4,300RPM. When I just drove it, the light I have comes on and usually stays on until redline, the light came on when I set it, 4300RPM, then seemed to go off at around 6000RPM. When I was reving it in the drive way, I had the hood up so I could see if the VIM opened, and stayed open till redline when it was in nuetral, I have a manual. And the light stayed on the full time. I have no idea how to tell if it stays open when I'm driving unless I take the hood off. Is there anyone that could help me find out what's wrong? I might have changed the cylinders settings on the switch on accident but I lost my sheet with all the settings so I have no idea how to set it back. Please help.

Mooney

Toolrocks

iTrader: (1)

The only way I've found to truely know if you're VI is activating is to wire a switch, similar to a WOT lever switch, to the butterfly's actuator. Sorry, I can't take a pic of mine but on the driver side of the VI there is the actuator that gets pulled in during activation, just wire up the switch to get tripped when the actuator rod gets pulled in. Hope that makes sense.

HARLAN settings:
button 1 - # of cylinders
button 2 - RPM turn on point

for # of cylinders (if hooked up to ignition coil wire)
6 off, off, on, off, off, off, off

for coil per plug (if hooked up to tach signal wire)
off, off, off, off, on, off, off

for RPM the lowest setting is 500 rpms and the highest is 12,000 rpms.
The dip switch posistions add up in binary, posistion 1 represents 100, pos 2 200, pos 3 400, pos 4 800, pos 5 1600, pos 6 3200, pos 7 6400. Just sum these pos/rpm and turn the dipswitches to the on posistion to set the RPM turn-on point. I mention this because you're setting your RPM threshold at 4300 - I think most people agree is should be around 5000-5200 for activation.

Damn, my fingers are sore now.

Powerman5115

iTrader: (5)

Thanks for the reply. Is pushbutton #2 the one closest to the wires on the switch? I set it at 4300 cause I thought it was activating 200 RPM late. I set it at 4500 one time cause one of my friends said it was the best setting, and that was the first time i really chirped the tires in second so I like that now. I'm not too smart and don't really understand the settings you said, so what would be 4700, would 1 2 3 4 6 be on?

Is there a site with a picture of the switch you are talking about on it?


Mooney

Toolrocks

iTrader: (1)

If you remove the guts from the Harlan switch, you'll see a set of dip switches, orient the unit so that the dip switches are under the buttons. Now when you look at it, the button on the left is #1 and the button on the right is #2.

For 4700 you would set the switches as follows:
1(100) 2(200) 3(400) 4(800) 5(1600) 6(3200) 7(6400)
on on on on OFF on OFF

100 + 200 + 400 + 800 + 0 + 3200 + 0 = 4700

That should be pretty clear. Also, I would defintely recommend you set it for 5000 first, get comfortable with that and then try it at 5200 and see if it feels any better. You can't judge your settings by the fact that you chirped a gear when you shifted. You should have been able to do that w/o a VI. It's easy to chirp gears in most manuals regardless of horsepower. Dynos have shown the most power gains at 5000-5200 activation points. Enjoy!!!

Nealoc187

iTrader: (23)

BTW the switchover you want is between 5200 and 5400rpm. If I still had my harlan I'd have it set at 5300 but the summit switch only goes every 200rpm.