Fmic

[-cj-]

Hey gang,

I'm looking over the Cobb map notes and apparently my car is hitting them bang on... The reason I started this thread though, prior to my FMIC my car was spiking at around 21.X psi and holding at about 18-19 psi. With the new map I'm running, MAX I've peaked at was low 18 psi and it holds at around 15-16 psi. I'm also getting part throttle hesitation, but I'm not sure if that's related.

I'm still on stock plugs (Hope to change this soon). Running the SF1+93+FMIC v1.05 map which I'm told is new (This is one of the first stage 1 FMIC revisions, previously only available for stage2). I wish there was an easy way to compare two maps without going through each table...

I pulled some logs off my AP and fuel pressure is acceptable (1620.01 psi).

In fact, here's an entry from my last log:

Accl Pos: 72.15% (I was either coming off or in the process of going WOT)
Throttle Pos: 73.71%
AFR (Actual): 10.29
RPM: 4876
LTFT: -0.16
STFT: -0.16
Speed: 60.89 mph (3rd gear I imagine?)
Fuel Inj Amt: 10.94 mg/cyl
DI Fuel Press: 1620.01
Boost: 17.98
Wastegate: 0%
Spark Adv: 5.5
MAF Volt: 4.19
Boost Air Temp: 95F
Intake Temp: 96.8F
Knock Retard: 0

[spd frk]

Things look pretty good there. You could adjust the LTFT a little by scaling your maf in the MAf table. There is a good post on MSF about how to do that.

You probably want to fool with the "Normal BAT" boost tables in your AP map. I had the same issue with my car, on the Stage 2+SF 93octane map I could only get a steady 16-17psi not 19 as the map states. I altered the boost tables for a little less low RPM boost, a higher midrange, and a little more drop off cbetween 6250 and 6700rpm compared to the COBB values. Got a much better curve with a stead 19psi.

You can also adjust throttle mapping, but I have never fooled with that.

[-cj-]

I'm going to try calibrating my MAF sensor and go from there. In v1.05+93+Stg1 everything was fine, in v1.03 of the same map it was jerky like this current map. I figured it was a maf thing but the values are the same. I'll try calibrating and changing my plugs and see where I'm left.

Thx for the tips!

[spd frk]

Make sure to gap the plugs correctly with a gapper, if they aren't correct already. My NGK 1step colder's wer way out of gap about .042 vs .028 optimally.