Help with first tune

[knochgoon24]

Ok, just getting some input before I put some time into tuning this tomorrow. I just went out and did a pull. This is 3rd gear on an auto, which is why it starts at 4500RPM (thing kept down shifting to 2nd as soon as I went WOT). This is 14psi on a T25 with 30* temps. Mods in profile. This is my one and only DD.

Logging with EvoScan
LC-1 Wideband
SAFC 2

<a href="http://s491.photobucket.com/albums/rr274/knochgoon24/?action=view&current=Pull1-Untuned3-20-09.jpg" target="_blank"><img src="http://i491.photobucket.com/albums/rr274/knochgoon24/Pull1-Untuned3-20-09.jpg" border="0" alt="Pull 1 - Untuned - 3/20/09" width=700></a>
(Image is linked to a larger photobucket image)

Now, it seems my timing and knock are in good shape. From the looks of it, I should start pulling fuel because I'm at 9.5-9.8 AFR. Should I turn boost up or lean it out first? I'm at 86% IDC at 6500RPM. I figure I should lean it out, turn it up, lean it out, turn it up until I get to about 11:1 AFR and 80%-85% IDC while keeping an eye on knock, correct?

If possible, can someone give me some general correction %s? For example, I'm thinking that if I kept 14psi, I'd need to pull about 13% air flow pretty much across the board? Does this even sound reasonable?
(Slowly working up from 0% to 13% and watching AFR of course).

Using:

Correction % = 1 - Current AFR / Target AFR​

If I can get this dialed in nicely before the STM dyno day they're having in April, I might actually go to it.

 

[Rob10_99]

Make a log where your engine is off and use your hand to move the throttle and ensure 100% tps.
Your way rich like you haven't touched it from the factory, HELL YES lean it out to at least 10.5:1 is a good start.
As for the readings on your LBs/min not sure why its in the 0.x range.
Load calc is correct at more than 100% as well?
I see, it must be from you taking almost 20 seconds on the pull,
towing a trailer?

edit~

Because your not WOT, your maps will be different. All I can say is do a redlight-howeverfastyoursaneenoughtogo log and post that up.

 

[spyderturbo007]

Since you're on the stock injectors, mathematical correction is zero.

The log looks great, go ahead and start leaning things out 1 or 2% at a time across the entire Hi Throttle map.

 

[knochgoon24]

Make a log where your engine is off and use your hand to move the throttle and ensure 100% tps.

So 96.86% isn't enough to register WOT in the ECU? Maybe I should move the thick rubber floor mat. Oops. Forgot.

Your way rich like you haven't touched it from the factory, HELL YES lean it out to at least 10.5:1 is a good start.

I haven't touched it yet to start tuning. This was baseline. I'll shoot for 10.5 then as a start. I haven't had my car running this good since September, and that was only for a month. This is the first time it's been over 90 mph since then.

As for the readings on your LBs/min not sure why its in the 0.x range.

Not sure why either. This was on Evoscan v2.5. Maybe I'll try the new beta version and see what it reads out.

Load calc is correct at more than 100% as well?

Dunno that either... the "Load calc" forumla is this mess...
5*InjScaling*([InjPulseWidth]-(-0.1026*[Battery]+1.8741))/[AFRMAP]
It does give a pretty good estimate of boost pressure. 200% Load Calc is ~14psi, 175% is ~10psi. Not sure if that's a fluke though.

I see, it must be from you taking almost 20 seconds on the pull, towing a trailer?

Not quite, but close. I have nearly 100 lbs of tools in the back of my car and with a full tank of gas. Plus, I did this on a hill with a pretty decent grade. It was the longest, smoothest, least driven road around. The cops never watch it on weekday nights at 1am. But yeah, it was pretty slow; hence why I'm trying to get it tuned.

edit~

Because your not WOT, your maps will be different. All I can say is do a redlight-howeverfastyoursaneenoughtogo log and post that up.

I'll try to get a run in from a complete stop. This one was from a 20mph rolling start. As for the "redlight-howeverfastyoursaneenoughtogo log", it does have Z rated tires and a fresh alignment...

 

[spyderturbo007]

So 96.86% isn't enough to register WOT in the ECU? Maybe I should move the thick rubber floor mat. Oops. Forgot.

Yes, 96% is enough to move to open loop, but moving the mat would be a good idea.

Take a look at the O2 sensor voltage in that log. See how it's a consistent value, as opposed to oscillating around 0.5v? That lets you know that the ECU has moved from closed loop to open loop.

 

[toofast82]

Sounds like you're on the right track. You'll definitely want to lean out some and should be able to add a pound or two of boost in there safely as well. At that point, you'll be pushing the T2small to its limits

 

[knochgoon24]

Sounds like you're on the right track. You'll definitely want to lean out some and should be able to add a pound or two of boost in there safely as well. At that point, you'll be pushing the T2small to its limits

Yeah. The turbo upgrade comes this summer. I've done almost everything I need for supporting mods first. I'll just have to upgrade the fuel system.