getting ready for track

[Shimy87]

Track day Sunday!!!  I'm attaching a couple logs from some test passes on the street. Probably a touch rich but what do ya think. some knock on the one but dont know if I should be concerned?? the one run that shows 9 lbs boost was set at a 2 bar map sensor so shows low boost pressure, was actually 23-24 lbs. run 3 I lowered 1st gear fueling to 124.

[Steve Wood]

Okay, I only looked at run three.

It is still too rich in low gear.  I would aim for less than .800v.  I also would add some timing to first gear.  that may help get the O2s more inline.  You might try that first and then adjust the fueling after seeing what effect that had.

That does not look like detonation to me...at that boost, it should ramp up if real.

I would try for 25 psi of boost.  That will, of course, lean it down.

[~JM~]

Is there an Apple program that will open & display those data logs?

[Steve Wood]

No. You can download Powerlogger software from the Turbotweak site. Windows only.

[Shimy87]

Thanks Steve, never messed with timing before. What would you suggest for first gear timing?

[Steve Wood]

Try plus 2 degs in low as a test

[Steve Wood]

To put it in order.

Raise the boost to 25.  Add two degrees of timing to Low gear.  Adjust the fuel to get the O2s below 800 thru out the run.

[Shimy87]

Thanks Steve, I give it a go a let ya know what it ran Sunday!!

[Steve Wood]

👍👍

[reality]

Assuming ''race'' gas or alky.

[Shimy87]

alky
I cant get pic of time slip to load, heres the numbers
60 '  1.677
330   4.828
1/8  7.564
mph 89.5
1000  9.951
1/4    11.984
mph  110.31

log of that run attached, best of the day, it was humid and 85 degrees. Nothing amazing but finally hit the 11's so I'm happy.....Than ks Steve!!!

[Steve Wood]

Good start! I will look at the in log after while 👍

[Steve Wood]

Looking at the slip, I see it only gained about 20 mph in the last half.  I would have expected more like 24 mph.  It was picking up rpm so I am guessing it was losing it in the converter.  I think I would consult the guy that built the converter and ask him if you should lock it up about 80 mph?

It is still way rich in first and second and I noticed that you did not add any timing to first...at least on this run.  My experience is that any time the o2s are over 800, the car is slowing down.  I am guessing there is quite a bit more to get out of first and second.  I was hoping that more timing would bring it alive and burn more fuel thus bringing the o2s down.

[Shimy87]

Didn't get many runs,  the waves of knock at the end of run had me scared to do much more...was probably false? I expected better mph also...I will contact the converter guy.

[Steve Wood]

That was not actual detonation. Good start to the year👍👍