5SFE Advanced Ignition Timing Problems - Page 2

Sh0ty · 04-21-2009, 09:25 PM

I'll do the tune up, then dial back to 14 if necessary.

1993MR2NA · 04-21-2009, 10:23 PM

"...and I jumped the right connection in the diagnostic box (E1 to TE1)."

I assume this part is done to keep the computer/knock sensor from adjusting the timing.
Does that mean that in order to keep the timing advanced, you must keep it jumpered the whole time? I would assume so, since pulling the jumper should put it back into computer controlled timing. Right?

ebouwman · 04-22-2009, 02:38 AM

Quote:

Originally Posted by 1993MR2NA

"...and I jumped the right connection in the diagnostic box (E1 to TE1)."

I assume this part is done to keep the computer/knock sensor from adjusting the timing.
Does that mean that in order to keep the timing advanced, you must keep it jumpered the whole time? I would assume so, since pulling the jumper should put it back into computer controlled timing. Right?

No, not really how it works i don't think. From what i understand the actual timing is way more than 10 degrees BTDC. When you jumper it you're setting the base ignition, and then the computer adds more advance where it needs it.

1993MR2NA · 04-22-2009, 04:12 PM

Thanks ebouwman, I asked another expert and he said the same thing your did. The jumper just allows you to accurately set the base timing. The computer then makes slight adjustments based off that.

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04-21-2009, 09:25 PM	#21 (permalink)
Sh0ty Armchair Racer Join Date: Aug 2008 Location: Novi, MI Posts: 678 Thanks: 17 Thanked 33 Times in 32 Posts My Google Map iTrader Rating: (3/100% )	I'll do the tune up, then dial back to 14 if necessary.

04-21-2009, 10:23 PM	#22 (permalink)
1993MR2NA Natural Aspiration Skills Join Date: Apr 2009 Posts: 46 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	"...and I jumped the right connection in the diagnostic box (E1 to TE1)." I assume this part is done to keep the computer/knock sensor from adjusting the timing. Does that mean that in order to keep the timing advanced, you must keep it jumpered the whole time? I would assume so, since pulling the jumper should put it back into computer controlled timing. Right?

04-22-2009, 04:12 PM	#24 (permalink)
1993MR2NA Natural Aspiration Skills Join Date: Apr 2009 Posts: 46 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Thanks ebouwman, I asked another expert and he said the same thing your did. The jumper just allows you to accurately set the base timing. The computer then makes slight adjustments based off that.