Link to my tune + a 40 minute log of this tune:
Bringing back that 'old-school' wonderful, vacuum advance, part-throttle feeling LNF

Bringing back that 'old-school' wonderful, vacuum advance, part-throttle feeling on my LNF...

Ahh, the good-old days, are still here...

Remember when, you set your timing, with a timing light for 10 degrees of initial timing, & combined with vacuum advance,
you had a beautiful idle, & that wonderful part-throttle response, that felt so so, good...

With changes to the optimum spark tables, I've achieved , that wonderful feeling again...

If your running an E47 - E85 tune, & have HPTuner, try this tune, & let me know what you think...:

 

there is power to be made in the OS tables, but also easy to overdue them as well

 

everybody try it out, lmk how it goes

 

Agreed, because of emissions, the stock OS tables have been raped & neutered...

Low loads , low speeds, & cruising, need lots of timing advance, in which the old style vacuum advance system provided, but is a today, because of the EPA...

I've tried maybe 20 different OS tables, until I found one that feels so good...

 

Running the new tables for a month now, & still feels wonderful...

Took it to the track on Saturday & ran my best pass ever 12.28 @ 112.67 MPH

My 'buggy' also turned 30,000 miles on Saturday too.
6 years running with an E47 mix , & never any problems.
The 4t45e is as strong, as it was when it new also...

 

Nice

 

I'm going to give some of your tables a try on my Cobalt.

You got me all excited to make the drive ability better!

Thanks for sharing