Search:

Hmm.. I missed that last post I guess. Could explain why I'm having trouble. Wonder if the wild '411 tuners have anything to add?

Jim

Riiiight... I do appreciate the humor. My bad, files attached.

I just tried some settings from the Silverado tune, 2.0 for the initial and 1.0 for decay. Went up as far as 15 for initial and I...

Almost all of my startup airflow settings are zeroed out which has been ok up to now but the time has come to increase airflow a bit when cranking and immediately after the engine lights off. A bit...

I've been using the EGR input for scanning and datalogs with the AEM and with an Innovate before that. It seems to be working well and I see no need to change that. I just want something that will...

Is the AutoMeter 3870 GS Air/Fuel Ratio Gauge a good choice?
I have been using the AEM X series but have had two failures now with the head unit. I'd like something a little more reliable.

Jim

Not running MAF, it's a SD tune.
I continue to refine the VE table but the thing that is in the way of being able to lean out the cells for economy is this rich/lean transition on upshift with a...

I'm seeing posts that seem to indicate that this business of starting on the second crank is a pretty common problem. Lots of posts about it and lots of guys chipping in and saying theirs does too,...

What you say makes sense of course, and if it was something like a bog I'd totally agree with you. But it isn't, it just an irritating little stumble and I know for sure that guys have had success...

Definitely going lean on tip-in and rich on tip out. The lean spike is much more obvious which I suppose is to be expected.

"If it's rich on throttle close and lean on throttle open ... changing...

Thanks guys, I have most of that sorted, I just get a lean spike on the upshift, I can see it flash to around 18 or 20 on the AEM WB. It makes the engine hesitate on re-application of the throttle...

I'm sure this is an easy one for you old pros. Anyway on every upshift ('411 controller, manual tune, 300 Buick V8, full Monte SD) I get a lean spike that causes hesitation just as I'm hitting the...

I've been driving this for awhile now and, let me know if I'm off base here but I've about come to the conclusion that the starting problem is really a consequence of the fueling system and can be...

Good suggestion but it isn't enough. There are no descriptions in the favorites menu and worse still often several things have the same name.

Jim

That's probably headed in the right direction, sort of. But not really. It's more a specific vehicle based guide from a quick look, maybe a more in depth look will be different.

You are right, I...

Thanks, great resource and I'll be reading that carefully in the coming days and weeks.

But it's not really what I'm looking for here. I should try to be more clear. As you all know, the labels of...

Is there an official cheat sheet for HPTuners on the '411 controller? You guys know what I'm talking about right? All the most common shortcuts to get you right to the place you need to be to tune...

I guess it's probably time to close this thread out. Maybe open a transients thread some time.

There's still some fine tuning to do on startup but it's mainly leaning out the FA table and the...

Smoke, could I pick yer brains a bit on what some of these settings for transient do? I've been playing with them a bit but not really getting the results I've expected. For instance, is "Fuel on...

I think I need to pay more attention to the AFR commanded trace. Maybe clean up the scanner a bit so I can follow that better. It was staying pretty flat before, and now it's moving around a bit....

Sounds like good advice. My VE table is really close and pretty smooth, I take that pretty seriously. I've seen plenty of way worse OEM tables. Using my AFR% graph I'm showing under 1% in most...

I guess I didn't post my last notes. Anyway it's in the 20's today and ECT was 45. Fired right up and no hesitation driving down the street so I'm pretty happy with the cold start and warmup.

On...

Warmup is now very good and cold start is close. Test that again tomorrow and may be done with it until it gets very cold again. That leaves heat soak and transients. I'm going to go back and review...

OK thanks. Sorry to take a couple days getting back. I had to pull and tear down the engine from our group project car and we just got that finished and off to the machine shop yesterday. I just ran...

Thanks for that, I didn't even know that was there. I've attached a screen shot of my Fuel/Open Loop/Cold Warmup/Afterstart/Hotsoak Enrichment and /Initial Adder Soaktime Multiplier. The Soaktime...

I changed the transients table back to stock Silverado.

At this point it appears that I have two remaining issues.

1) Occasionally I get a throttle hang at about 2500rpm, so far I haven't...