Auto Tuning - Step-by-Step

[TAQuickness]

Here it is! A complete step-by-step write up for Autotuning

Revised 8.9.05 2355 (GMT-6)

Edit: for the time being, I cannot seem to make the add attatchment work. In fact, it's not even an option. So If you would like a copy of the doc, please email me.

If you would prefer an uncompressed copy of the document, please email me: TAQuickness@houston.rr.com

Do we email you for the 8.9.05 updated doc (I can't find the link to it)...?

:?: :? :?:

[joecar]

TAQuickness, I'm sorry mate, I was suffering from instant brain fade.

[Patches]

After running in SDCL mode for a day, two issues persist.

1) On cold start (not hot start though) the engine races at 2500 rpm for 3 secs before settling at the correct starting idle speed.

2) I have a cruise control problem on deceleration with the clutch pressed in. As I approach a stop, I push the clutch in to brake and come to a top. The enging remains at 2200-2500 rpms until about 2-3 secs after I stop and then drops suddenly to the correct idle speed. Also, if I then rev the engine a bit while stopped, it will climb to 2200-2500 and then decay back to idle in 2-3 seconds.

These two symptoms didn't appear until I had driven for approx. 20 minutes after switching back into CL mode.

Suggestions?

[SSpdDmon]

After running in SDCL mode for a day, two issues persist.

1) On cold start (not hot start though) the engine races at 2500 rpm for 3 secs before settling at the correct starting idle speed.

2) I have a cruise control problem on deceleration with the clutch pressed in. As I approach a stop, I push the clutch in to brake and come to a top. The enging remains at 2200-2500 rpms until about 2-3 secs after I stop and then drops suddenly to the correct idle speed. Also, if I then rev the engine a bit while stopped, it will climb to 2200-2500 and then decay back to idle in 2-3 seconds.

These two symptoms didn't appear until I had driven for approx. 20 minutes after switching back into CL mode.

Suggestions?

http://efilive.com/forum/viewtopic.p...light=follower

Check into setting your throttle cracker & follower tables. That could very well be the problem.

[Patches]

I copied my VE table to the CL MAF tune. The only difference in parameters from the CL SD version is what makes it SD - all other values are identical. The MAF version ran great although the trims were 5-13 negative. So, with the MAF enabled and using the SD VE table, the runaway start and cruise control effect disappeared and it leaned out. This is the original tune I was rich with before the SD tune.

[TAQuickness]

TAQuickness, I'm sorry mate, I was suffering from instant brain fade.

Not a problem man. I frequently suffer from uncontrollable cerebral flatulence

[BowlingSS]

After running in SDCL mode for a day, two issues persist.
1) On cold start (not hot start though) the engine races at 2500 rpm for 3 secs before settling at the correct starting idle speed.

2) I have a cruise control problem on deceleration with the clutch pressed in. As I approach a stop, I push the clutch in to brake and come to a top. The enging remains at 2200-2500 rpms until about 2-3 secs after I stop and then drops suddenly to the correct idle speed. Also, if I then rev the engine a bit while stopped, it will climb to 2200-2500 and then decay back to idle in 2-3 seconds.
These two symptoms didn't appear until I had driven for approx. 20 minutes after switching back into CL mode.
Suggestions?

The 20 minutes was probally the idle learn time????
Bill

[Patches]

The 20 minutes was probally the idle learn time????
Bill

Possibly. I adjusted the IAC table and both symptoms disappeared.

I've reenabled the MAF now and my trims have gone lean - about half as far over as they were before the SD tune. When I revert back to SDCL mode, trims and BEN table are great. Back into MAF mode again and the trims go lean on me with the BEN table holding steady. I'm thinking a MAF recal is now in order.

[TAQuickness]

could always hang the MAF on your garage wall as a decoration

[BowlingSS]

could always hang the MAF on your garage wall as a decoration

That is where my is!!!!! In fact I have two of them.

Bill