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Finally made it through emissions test, barely. Right at the max HC. What finally worked was lowering the Main Spark table to somewhere around 10-15 deg at idle, raising the cooling fan temp to 205...

Still failing emissions test. Max HC is 220. I got it down to 275 by raising idle to 850 and lowering the Main Spark table around idle to 10 deg. 600-1000 RPM 25-55 kPA. Can still smell it in the...

Awesome news. :woot:

Driveability Issues:

Cold starts at 32 deg F. -- it's running very rich, the idle is swinging +/- 200 RPM. Target AFR is 8.5. Wideband does not agree.
I think the extra fuel is from the Choke...

Road Tuning VE:
This is pretty much the same process as the idle VE tuning except you are moving. Just need a warm engine in closed loop. Not too aggressive to start with. 25% throttle up to 3000...

Russ,
Hope it helps. I tried tunerpro but couldn't get the tables to display properly. Probably missed something. Maybe you can start a tunerpro topic. Nice to have options. I'm editing the above...

Nice. So, how did that work out? Hard to find many positive 3.4L tuning stories. I've seen a few 3x00 hybrid tune threads where they seem to just give up. End of the story is they are satisfied that...

Started new thread for tuning: https://www.v6f-body.com/showthread.php?6441-Tuning-the-3-4L-with-TunerCat&p=173153#post173153

Hope it helps.

Idle VE Tuning:
Hopefully you got it to run long enough to get into Closed Loop.
In order to start a new datalog, shut off the engine and close Scan94/95. Restart the scanner and start the engine....

Modes of Operation:
There's many different going on just to get the engine started and warmed up to closed loop operation.
Crank
In TunerCat there's a table called Crank PW Multiplier Vs. RPM. It...

I've been working on a new engine for my 92 S10 for the past year. It had the weak 2.8L @ 125HP. Manual Trans.
New engine is a 95 Camaro 3.4L with a 2003 Grand Am 3400 top end. 3400 pistons and head...

I've been using TunerCat with the PCM_V6 definition file. $$$

Scan and Datalogging with Scan94/95_V6 from GaryDoug. http://www.mediafire.com/file/a5vohu1c8n4mu6m/Scan9495-V6_Ver1-2-1.zip/file ...

It's kind of sad watching these V6 forums lately. Most of them haven't had any posts in years. Same goes for the S10 forums. Not much interest in turning wrenches these days.

I spend a lot of time...

It's not that bad. I had other issues, bad coil and injector. I somehow got my #1 cylinder on the wrong side. It's not the piston in the front. Ran really rich. This was before I found the def update...

Short time lurker, first time poster.

RdH, I've been reading your posts on several sites, other than this one, for awhile. Then a couple of weeks ago I stumbled across this site and your post and...