Round one of newb questions

[junior73]

Let me start by saying that I have absorbed as much information on the EEC as I could, and have a couple of questions for ya'll just to see if my brain is tracking the right way.

1. If I tell the EEC what size injectors I'm running and load the proper MAF table, then it doesn't matter what the meter is calibrated to.

2. If I shut off the adaptive control, and force open loop then the computer will only run off of what I put in the base fuel table.

3. All of my spark tables should be the same.

4. Spark @ WOT setting will remove the need for an aftermarket controler, i.e. a MSD Boost Retard Module.

Sorry if these seem like basic questions, but i am just trying to get a handle on all of it.
If it helps any, this my combo is going to be a 306 H/C/I and a Vortech pushing about 10psi.


Thanks,

Keith

[QWKSNKE]

1) to an extent. If the calibrations and injectors are close to each other, than yes. But if we are talking a 42# injector on a 24# MAF, then no. The MAF will 'peg' out
2) I believe that is correct

3)Not necessarily. You can run higher timing at low loads/low rpm and retard the timing from say 3000 rpm up

4)yes sir

[Dale McPeters]

1) to an extent. If the calibrations and injectors are close to each other, than yes. But if we are talking a 42# injector on a 24# MAF, then no. The MAF will 'peg' out

Yes depending on how much air flow and hp the engine is making....
The SCT maf's seem to be calibrated more for a HP rating than a
particular injector size...


2) I believe that is correct

Need to take into account the multipliers like WOT etc. etc.
Also will depend on how the MAF was dialed in, meaning was it
tuned to match what is set in the fuel table? What are the multipliers
set too that are in effect in open loop. And how the load looks after
this is accomplished.



3)Not necessarily. You can run higher timing at low loads/low rpm and retard the timing from say 3000 rpm up

Possibly correct........:jester:


4)yes sir

Yes.

[93Cobra#2771]

Lee and Dale pretty well covered it... :D

[Dale McPeters]

Lee and Dale pretty well covered it... :D

Lee had it covered I just added in some thoughts.....:D

[junior73]

Thanks for the replies everyone. At least I seem to have somwhat of a clue.

I asked about he MAF, because I plan on running a 90mm MAF cal's for 42's on a set of 19's. I am going to try an inital tune on the motor before I put the cahrge on. Thought It might be a little safer. If this is way of base, please let me know!

As for the fuel table s and open loop, I guess I need to read some more, because honestly, I don't understand how the multipliers work and such.

Glad to see I can lean it out a bit and add some timing under low load for cruising on the highway.

Really glad to see I can get by with a 6A!


Again, thanks for the input. It really helps when someone knows what they're talking about !!:jester:

[QWKSNKE]

yep. i run a 6a on my car

[vristang]

Let me start by saying that I have absorbed as much information on the EEC as I could, and have a couple of questions for ya'll just to see if my brain is tracking the right way.

Keith

Keith, what computer are you running?
As I have read, the Fox computers do not need to have any tables deactivated.
That is more of an sn95 thing.

Not sure if it matters to you though,

jason

[junior73]

Jason,
I will be running an A9* computer. Form what I have gathered, if I shut down the adaptive learning, then the motor will shoot for an A/F ratio that I dictate, not what has been learned.
Still learning, so who knows. I'll be sure to keep everyone updated as the motor and stuff comes together and I get to do some hard tweecing!

[vristang]

Jason,
I will be running an A9* computer. Form what I have gathered, if I shut down the adaptive learning, then the motor will shoot for an A/F ratio that I dictate, not what has been learned.
Still learning, so who knows. I'll be sure to keep everyone updated as the motor and stuff comes together and I get to do some hard tweecing!

What are you tuning with? Tweecer?
Are you using a wb?
Why don't you want to use what the computer is learning?
Without adaptive strat, a rich or lean condition will not be compensated for.
At high loads/rpm the computer will go into closed loop anyway, so disabling adaptive will only affect part throttle driving.
Are you having issues with part throttle?

I have heard that some folks will shut off the adaptive in the idles load/rpm range, but that is strictly for idle quality problems that could not be resolved in normal ways.

Is this a track only car, daily driver, or what?

Normally it is the KAMRFs that are used to determine how accurate the MAF Transfer and Fuel Injector settings are. With the adaptive ability turned off, you will have no KAMRFs to use for future tuning decisions.

Well that was pretty random. I guess I am just curious as to why you feel the need to disable the adaptive ability of the eec.
I think it is a pretty sweet feature.

jason

[Italian LX]

Jason,
I will be running an A9* computer. Form what I have gathered, if I shut down the adaptive learning, then the motor will shoot for an A/F ratio that I dictate, not what has been learned.
The ECU will shoot for a particular A/F that you dictate no matter whether adaptive is on or not -- it's displayed as LAMBSE.

Turninng adaptive off only elimnates any compensation that computer would make from the O2 sensor feedback (ie. KAMRF long term fuel trims). For a street car, I would only turn off adaptive while tuning with a wideband. Otherwise, I would leave it on all the time.

[junior73]

Alright, I plan on doing all of my tuning with the tweecer. I wanted to shut off adaptive and force open loop, because I am absolutly terified of running lean when I'm in boost. It may never happen/not even be possible, but that is the way I understood things.
I am going to be running a Dynojet WB Commander permantly mounted in the car.
It is most definatly a daily driver. At least until I get a beater to roll around in and save it for nice days. Plan to take it the tracks a few times a year, but nothing crazy. My goal is to have a decent mannered, hot street car. Like I said, I was/am terrified of grenading my new motor.
I am going to try to do a base tune (idle, low rpm stuff) with the blower belt off, and then start working part and WOT.


So if I shut off adaptive while doing my tune, and then turn it back on, the eec will still try to shoot for what I put in the fuel tables, correct?

Thanks for the questions and the answers. All of it helps me get on the right track.

Keith

[Italian LX]

So if I shut off adaptive while doing my tune, and then turn it back on, the eec will still try to shoot for what I put in the fuel tables, correct?
Yes.