Can anyone post up their timing log from a hwy cruise, like 60-80mph in 6th gear. (like 2000-3000ish rpms at -20 to -5"Hg)

I cant see stock timing values anymore and wanted to see how much advance the timing is set for under low load cruising situations.

Thanks!

 

usually ranges from 38-43 degrees, sometimes you can get it up to 45 degrees and gain a lil more MPG...all depends on the ROM you have

 

My understanding is that if you adjust timing to maximize vacuum you will identify the optimal timing for cruise conditions. Since your engine is not anyway near stock, I think you might benefit from road tuning.

 

ya wanna try setting those cells up for a leaner cruise more timing less fuel, but wanted a base point on how far i can take it.

so if I road tuned at a steady load (like cruise control set) and advanced the timing, i should see a drop in vaccuum to a point and then have it come back up?

 

Cruise control wouldn't be a good test... too much fluctuation even when u think it's steady. Have someone with a steady foot drive the car and you can tune from the passenger seat.

 

neat graphs i found on a honda site of all places. So basically i'd just have to reproduce that kinda graph for my engine and set the values from there.




from http://www.hondatuningmagazine.com/t...ing/index.html

 

Awesome info! Nice find!

 

I have some old logs of stock cars. Timings at low load/speed are from 38 to 41