[camaro-69ss]

I've gotten most of the bugs figured out.... here's my latest questions:

Should my O2 sensor be reading steady or moving all over the place? Mine moves constantly. It's a narrow band, so the software reads out the voltage and it bounces all over from .06 - 1.02 and just constantly moves all over. I pretty much ignore it and follow the compensation marker and do my tuning based on that. The cars runs pretty good at alll speeds now, except for when i start out from a stop. It's a 4 spd and it falls on it's face everytime i take off. I can't figure out how to tune that ... any help?

[JimM]

That is 100% normal for the narrow band O2.
Ignore that reading completely, other than to know it means you're tuned right.

The thing to watch that will make more sense is "O2 Comp." This is "how much fuel is being added or subtracted from the base map to get the correct mixture from the o2 sensor."

You want to try to be a lil rich, so the O2 comp is a small negative number.

Theory behind that is if your o2 sensor fails you won't be lean.

[JimM]

On your second question I'm a lil fuzzy, but I have read about this symptom recently on the efi forum at chevytalk.com.

In the "accelleration enrichment" screen, there are 2 settings, the top one is:

Enrichment based on rate of change of TPS

Bottom is:

Enrichment based on rate of change of MAP

From what I have read, one of them relates to reving clean with no load, the other with a load. you need to do the "no load" one first, just winging the throttle and watching the numbers, adjusting so it just goes. Then you drive around doing the same thing, various amounts of sudden acceleration, and tweak the other table.

Only problem is I don't remember which is which... I "think" the tps table is no load, and the map table is load.

Hope this gives you enough to find what you need. Maybe just read thru some of the stuff on chevytalk, it was a few weeks ago, a post with a lot of replies... I don't like the s/w they use, and haven't figured out how to search properly...

[JimM]

sounds like you been busy, and making a lot of progress.

Wish I wasn't waiting till winter to put mine on, I'm getting tired of looking at it on the workbench, it looks lonely.

[camaro-69ss]

I was planning for a long install period - a couple weeks of evenings, but within a week i had it all installed. the O2 sensor and the fuel pump were the most work by far. all the rest was pretty easy. i really didn't want to spend the extra $300 on the wide-band sensor but i think i'll be coughing that up soon. The tuning part is really intriguing and fun. I think you're right about the acceleration enrichment screen. i was starting to read up on that tonight and i think that's where i can fix my issue.

[JimM]

Jeff, just noticed you're in brainerd, do you ever hook up with Click (white 69 RS), or John the dentist, he has a res 69 / bk stripes?

[camaro-69ss]

Yea, Jim and I have been friends for years... He and Sue stopped by last week teasing me with his car while mine was out of commission getting the EFI installed. Don't know John the dentist - actually I probably do but don't know it! Are you the Jim who met them here before the Run to the Rockies last year?

[JimM]

Ypu. that's me.
Here's a pic of the 3 of us out in front of Click's place:

ooops, that isn't us, it's the cars... oih well, same difference.

[camaro-69ss]

Today I installed the WB sensor. Wow, no one should waste their time with the narrow band one that comes with the kit - unless you'd rather not know too much about how your engine is running. I still have alot of tuning to do, but it sure makes it all so much clearer and easier with the WB.

[SKIPS69]

Originally Posted by camaro-69ss

Today I installed the WB sensor. Wow, no one should waste their time with the narrow band one that comes with the kit - unless you'd rather not know too much about how your engine is running. I still have alot of tuning to do, but it sure makes it all so much clearer and easier with the WB.

I couldn't agree more! Just got my WB sensor installed last weekend. I have a ton of tuning left, but, it will certainly make more sense while I am doing it!

[cjuetten]

Originally Posted by camaro-69ss

i really didn't want to spend the extra $300 on the wide-band sensor but i think i'll be coughing that up soon. The tuning part is really intriguing and fun. I think you're right about the acceleration enrichment screen. i was starting to read up on that tonight and i think that's where i can fix my issue.

Not to turn this into a MN thread but, I'm about 1 hour south of you in St. Cloud running a 454/TKO-600 with a Lunati Bracket II cam in a 69 camaro.

I'm 100% sure you will not regret buying the WB-02 upgrade. While it may be running "pretty good" you are just a WB-02 away from running GREAT....you will be surprised how much fine tuning you can do once you get the WB. You may find it pulls best at WFO between 3500-4000rpm which happens to be when your AFR is 12.9. The rest of the time its so so and running 13.2-13.4. Start adding fuel in the ares where its 13.2-13.4 and now its pulling hard the full RPM. Also you can start tuning for cruising and fuel milage with out affecting WFO. As you may already know cold starts up here in MN can be tricky, once you get the WB it will be a snap getting it to warm up as lean as possible....no more black stains on the garage floor under the exhaust pipes.

While its not plug and play you can save about $100 going with an LC-1. You will have to program it and splice it into the C950

http://www.innovatemotorsports.com/x...cat=262&page=1