Attention tuners! Need help or base map!
 

I finally finished my build on my g37 and I'm trying to base map it with uprev and I can get it to start and idle just fine but as soon and I touch the gas pedal it turns so rich it pegs the sensor out at 10:1. But I can get it to maintain a steady 12.5:1 as long as the rpms are steady. Iv adjusted everything and I can't get it tuned in. Dose anyone have a tune they can send me just something a little closer than the POS base rom uprev sends you. A base tune off of a boosted performance kit I'm sure would be super close. My setup Is exactly like the boosted performance kit except my MAF housing is the stock 2.5in housing and my turbo is mounted in the rear. Same size turbo, fuel injectors,and fuel pump.
Any help would be appreciated my ecu part number is jk79b but a jk79c will also work for some reason because that's what uprev sent me for my N/A tune.

I think I'm getting it close on my own my major issue is tuning in the MAF table. Iv got the car reving in the garage up to 2.5k smoothly with a/f ratio staying between 11-14:1 anyone used the maf tuning tool? it's not wanting to work correctly for me at the moment.

If you are trying the live tuning with the car running we couldn't get it to work at all.

I can get that to work but not on the MAF table. I'm making progress it's just taking time. I'm going to try to get the MAF tool to work tomorrow maybe.

We had to shut the car off and reflash it every time.


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Bump!

i start with the k fuel multiplier and get it close to the afr target table at mid throttle first before i touch the maf, once it is the same ballpark afr wise mid to full throttle i get it to idle with the bottom of the maf table, then tweak the afr target tables to run a safe value and slap it on the dyno or nurse it to the tuner for final rescaling and dialing in. it is best to go close to the same percentage oversize on your maf housings as your injectors to keep the k value from getting to ridiculous as it messes with all the tables.

Update after my last reflash the car was running except the cursing/maintaining speed to stay with traffic when on and off throttle the a/f ratios jump around and i'm not sure how to fix that. But my major issue is that earlier tonight i took to car out to log and pull and it pulled strong and a/f ratios stayed around 12:1 but then it felt like it hit a wall around 5k in 3rd gear. I limped it home and checked the codes i now have p010b and p0101 mass air flow circuit range/performance problem. has anyone had this issue? can i just turn these codes off like i did the code for the secondary O2 codes?

Keep an eye on the fuel correction when cruising. If you get to more than 25% (125/75), then it goes crazy and either jumps super lean or rich depending on which direction you max out the fuel correction. If you're in the ballpark, look at the fuel compensation tables in the RPM/load range, and adjust up or down. You should be doing this with all 11's or 11.5's in the AFR target table. That way you can see which way you should be going on the Fuel comp table (either rich or lean). I usually do this with a tracer on the table to show me which tables I should change. Once you're hitting the target AFR's, then your fuel is stabilized and you can change the AFR target table to AFR's you want. Once fuel is stabilized, you can then start adding timing.

Yes, you can shut off the MAF codes.