Tach is way off

[Ryan Stout]

24x swap, all efi connection stuff, all fuses unplugged minus ecu, crank, and gauges, value in HPT is 3, grounds all good and checked with a meter, has a MSD 2step set at 4k. Now that that's out of the way...

When starting the car the tach reads 2500-3500rpm. As soon as it runs it goes to 900 like it should. Driving it's fine, it spins hard in 1st at the track. It shoots to 11500rpm, but HPT says I'm at 5500. ONLY happens when car spins and when starting. Any ideas?

[Ryan Stout]

http://www.youtube.com/watch?v=OMzHfhG7cOQ&feature=youtube_gdata_player

This should work, posting from my iPhone.

Tried did connecting the 2step, nothing. Should I try the ecu from my truck?

[zooguy]

never seen that one before?

[Fastbird]

There's teach settings in the computer. Call911's was reading 50% when we first fired it.

Posted from my Rooted and ICS'd Rezound

[Ryan Stout]

Already tried it Sean. Was at 6 on high/ low, I put it on 3 unless I missed something. Anybody hear of doing a pull up resistor?

[Ryan Stout]

Wondering if I got a bad ecu even though its rare.