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I am sure this will open a big discussion and that's good. my main point I would like answered is

will efi make my care faster and more consistent?

I understand that chassis has a lot to do with it as well but my car has always had the same 60 foot numbers more less from time to time. it doesn't swing very much.

so what will efi do for me??

thanks as always

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I almost hesitate getting into this - but - what the heck. I will try to attach a document I wrote years ago which discusses this topic in detail. I can’t attach it because it's a .doc file. Send me an email and I’ll forward it.

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well I hope to be at the track the same time. hopefully I can pull the trigger on the system and we can learn it together

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That would be great... I'm gonna start out with the
O2 running the show then build a fuel table and see
which is faster

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I just started running EFI.. but I MIGHT have to make
a fuel table just for racing... in open loop its
trying to drive the A/F to stoichiometric all the time
and in a max power condition you want somewhere in
the 12.5 range... so just for racing I might have to
with a fuel table... it can be way more consistent
if you stay in open loop and let the O2 do the work..
I'll tell you come spring time which way I go on
the loop thing

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It's closed loop that has the O2 sensor making corrections, not open loop. You could richen up your base fuel map to run richer like you want while racing and change to open loop when at the track so there is no O2 correction. Then you can tunr the Cloosed loop back on for driving around on the street. Or if you want, change the closed loop map to whatever AFR you want and have it run a richer mix during racing. I assume you EFI has a wide band O2 sensor? If not you won't be able to program for richer than stoic AFRs and you will have to do the first option.

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I just started running EFI.. but I MIGHT have to make a fuel table just for racing... in open loop its
trying to drive the A/F to stoichiometric all the time
and in a max power condition you want somewhere in
the 12.5 range... so just for racing I might have to
with a fuel table... it can be way more consistent
if you stay in open loop and let the O2 do the work..
I'll tell you come spring time which way I go on
the loop thing

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I just started running EFI.. but I MIGHT have to make a fuel table just for racing... in open loop its
trying to drive the A/F to stoichiometric all the time
and in a max power condition you want somewhere in
the 12.5 range... so just for racing I might have to
with a fuel table... it can be way more consistent
if you stay in open loop and let the O2 do the work..
I'll tell you come spring time which way I go on
the loop thing

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You definitely want to stay in closed loop with a target A/F ratio in the mid 12s, but you also want a base fuel table that doesn't require that closed loop does all the work. You want the base fuel table to be close to ideal. This is because the closed loop correction is always "behind the curve" because it only sees what has already happened. You don't want to run a race engine lean at any time.

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Thanks... sorta what I figured... do I have the
loop correct in that the O2 is working in open loop
(I can never remember that)

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No. The O2 sensor is used in closed loop and computes corrections to the base fuel table.

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Thanks... I dont know why I can never remember the loop
and I worked with injection for over 20 years.. but
I did the mechanical part.. nothing on the electrical part

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I'm pretty sure that in closed loop the ECU is trying to correct to the Air/Fuel ratio table not the fuel map.
If you have the correction set at 20% it will correct a lot more then at 5%
You use the wide band to dial in your base map. With the higher percentage. Then as you fine tune the fuel map by reading logs and overlaying them on the fuel table and adjusting the cells up or down. You back the percentage down so if the wide band goes out you don't burn up the motor.

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For right now its in self learn mode..I just fired
it up before I left on vacation... its gonna be in
self learn mode when I get it out in the spring...
I'll be reading up on it till I have a better handle
on it.... as of now Monte just said keep it in the
self learn mode