My data logs

[Trader]

Here are some of my logs.

All of these are stock logs. NO MODS at all.

I really noticed that the boost drops when the ambient temps drop.

The logs are the following from left to right:

left = Stock 3rd & 4th - 20 degrees ambient
Stock 4th 36 degrees
Stock 4th 42 degrees
Stock 4th 50 degrees
Right = Stock 4th & 5th 63 degrees

[Trader]

Here are some 3rd gear pulls:

All stock

Left = Stock 3rd 30 deg
3rd 41 deg
3rd 4th 42 deg
3rd 50 deg
Right = stock fuel trims

[Trader]

The following logs are with the MSCAI2 with air straighteners. No other mods.


I noticed I am holding boost much better now with just the intake. Even though these were done in cold weather. Still running rich though. Next will be the Cobb AP to fix that!!

Very interesting that I am getting 15 to 16 psi boost when the cars struggled to get boost with the stock air box.

I have noticed my fuel trims shot up after the intake. No logs but I am getting the following for my LTFT:

idle = 4 to 6
Part throttle = 7.0
Engine breaking = 7.8
Medium throttle & WOT = 10.2


Left log = MSCAI2 3rd gear 37 degrees
MSCAI2 4th 32 deg
MSCAI2 4th 38 deg
Right log = MSCAI2 4th 38 deg

[Trader]

I just flashed the AP MSCAI2 (cali.) V1.03 93 octane map. So when the fuel trims settle I will post comparison logs for this map in a couple days.

[PCspeed3]

what program do you use to view AP datalogs?

[Trader]

These logs are done with the Dashawk.

[Cue]

Screw the pedal position... Absolute throttle is enough.... If your comparing logs at different temperatures, use the BAT (Boost Air Temp). This is temp at the MAP, and this is what the car reacts to ....

[Trader]

Screw the pedal position... Absolute throttle is enough.... If your comparing logs at different temperatures, use the BAT (Boost Air Temp). This is temp at the MAP, and this is what the car reacts to ....


I have a theory that the ecu detunes when the IAT is low. Because the BAT were the same for some of these and I got different results.

[Cue]

I have a theory that the ecu detunes when the IAT is low. Because the BAT were the same for some of these and I got different results.

Well it kinda uses both, but mainly the BAT. In the winter months, IAT influences a lot. Not quite in the hot months though. Have you tried heatsoaking to about BAT 120 and logging? You'd be suprised....

[AutoEuphoria]

Make sure you log fuel pressure as well. I was unpleasantly surprised the first time I saw a log of mine with the fuel pressure...dropped to around 1100 at one point :\

[dread]

great logs trader and congrats on the ap. You lose boost in the cold because the ecu is just trying to meet torque targets not boost targets. You need less boost to make the same power in cold weather.

[Trader]

?

Dread, Auto was refering to a junk post that just got deleted.

Just ran the data logs with the AP. All I can say is WOW!!!. The car is freaken fast. I am at work now but will post them as soon as I get home.

[dread]

ha good to know you don't hate me. That's great news trader, can't wait to see the logs.

[Trader]

Ok here are some logs with the MSCAI and Cobb AP map MSCAI2 V1.03 93 octane. No other mods.

I drove the car for about 120 miles before going WOT. I did notice a little stumble here and there in partial throttle earlier at about 15 to 20 miles after the flash, but that has since disappeared. I guess the car just needed to get used to the new map and adjust the trims. My LTFT have stabilized. And are the following:

Idle = +6
Engine coasting = +7
Light throttle = +7.8
Medium throttle/WOT = 9.2

Still running a little lean, and they are close to what they were before the flash. It was about 32 degrees when I did these logs, so hopefully they will go down a little when the temps warm up here.

Running stock plugs for now. About to order the Denso's.

Anyways the AP really opened the car up. Definitely felt a big difference with this map. 50% throttle feels like WOT stock. Wheel hop is definately a problem now. Good thing I have a CP-E motor mount sitting in my garage waiting to be installed this weekend. :)

I did not log to redline because this is my first time going WOT and I wanted to see these maps to make sure everything looked good before taking it to redline. But the car pulled really hard the whole way to when I let off.

Not seeing any substantial Knock retard. Fuel pressure looks good. AFR between 11.8 & 12.8. May be a little lean for my taste. Way different than the stock map.

Both logs below are 3rd gear logs

You can see that cobb really opened up the throttle plate with these maps I am getting 80% at WOT when before I was lucky to get 50%.

The wastegate solenoid is now keeping boost up when before it would fall flat on its face on the stock settings when it was this cold. You can see a comparison log of my stock 3rd gear pull at 30 deg on my second post.

[dread]

looks good. that a/f ratio should smooth out once you start driving more at WOT more often. I'm not sure why you are getting spikes like that. Do you have the air straightener

[Trader]

.... Do you have the air straightener


Yes

[leadf00t]

Any updated info, or impressions of your setup ?

[Trader]

I did another log today.

This one is 3rd gear. Ambient temps at 65 deg.

My fuel pressure is dropping to 1400. It looks like it is only doing this at the boost spike.

Still running only a MSCAI and AP V1.03 93 octane.

Looks like if I do any more mods I need to get a fuel pump, or should I just get it now?

[Trader]

Any updated info, or impressions of your setup ?

It feels a lot faster than stock. I get a little hesitation sometimes (random) only at 3000 to 3500 rpm. And my LTFT at wot are at +8 to +9. Other than that no complaints.

[jodacoto]

i have the same mods as you w same map but i don't have thea dashhawk to do these logs. i use the ap to monitor. WOT my AFR are sometimes 9.3 9.4 I too get a little hesitation sometimes @ same RPM ,i agree the car feels way faster than stock ..... guess my next mods are going to be denso sparkplugs,fuel pump internals and gauges "boost, afr"

[Trader]

....WOT my AFR are sometimes 9.3 9.4 ...

Wow that is really rich.... or did you mean that your LTFT are at 9.3 9.4 ???

[Trader]

I have been having high LTFT since I installed the MSCAI so yesterday I switched the CAI into a SRI. I had a theory that the fuel trims were off due to the bend in the pipe just before the MAF. Well it seems to have helped a lot.

LTFT with MSCAI as CAI
idle = 5-6%
tip in = 10 %
Light throttle = 7%
WOT = 9 %

LTFT with MSCAI as SRI
Idle = 0%
tip in = 2%
light throttle = 6%
WOT = 3.5%

Much better. THe car seems to run better at part throttle.

I was also getting hesitation before. I have only run about 70 miles so far since the switch but I have not noticed any hesitation. Maybe the hesitation was due to the transition of fuel trims between the 4 maps not being smooth?

Anyways I did another 3rd gear log.

AFR:
My AFR seems more stable now and not as jumpy.

Boost:
Still getting a little spike to 21 psi. Is that a problem?

Fuel Pressure:
FP dip to 1500 psi at the spike. Is that a problem?

Knock retard:
Seems in control only getting 0.7.

3rd gear below at 68 degrees

Mods are
MSCAI as SRI
APV1.03 93 MSCAI
CPE motor mount

[jodacoto]

Wow that is really rich.... or did you mean that your LTFT are at 9.3 9.4 ???

these are afr numbers, the lowest recorded by my AP with this map. I'm not getting 9's wot anymore but low 10's seems the ecu relearned the new map or something . i was thinking of doing the transformation from cai to sri but was a little hesitant to use the same map.

[Trader]

these are afr numbers, the lowest recorded by my AP with this map. I'm not getting 9's wot anymore but low 10's seems the ecu relearned the new map or something . i was thinking of doing the transformation from cai to sri but was a little hesitant to use the same map.

Did you check for boost leaks post turbo? That will make you run that rich. THe APv1.03 93 map should not be getting into the tens at all??

[leadf00t]

You metioned your spiking to 21psi, are you running the stock bpv ?

[Trader]

You metioned your spiking to 21psi, are you running the stock bpv ?

YES

[jodacoto]

Did you check for boost leaks post turbo? That will make you run that rich. THe APv1.03 93 map should not be getting into the tens at all??

I'm not sure on how to check for boost leaks, i mean i checked all the hoses and clamps and everything looks ok but still the car is running rich.