VersaTune User Forum

need a base map for a dayli. i have a second gen 2012. mods: corksport catless, ebay 2.75 CAI, EGR DELETE. it's running lean and misfiring at normal Temp. the AFR run into the 12 but the spark plugs are wite and i know it's run lean, it's running with Base 93us/98eu tune but i know need custom tune contain maf cali. etc

What tune are you running now? I can change that for you and add a proper MAF cal as long as you have the full version of versatuner, not the lite.

I have the full version of vt. It’s running a BASE 93US/98EU, I recorded a couples logs yesterday including one make the misfiring at full Throttle, I’m going to send it today later. Tanks for the support!

WOT log

FULL THROTTLE. on this data log you can see when misfire start on the RPM around 2800 rpm.

I was going to ask you to take some logs but after I sent you a tune with a proper MAF cal. But if the car is ok then it's fine. The thing is that these gen2s are quite sensitive to weird AFRs, and they do not adjust until up to a point.
But let's see...

See how this one works: When you can take some logs using this preset: https://www.dropbox.com/s/ennahtecidzpu ... vtpre?dl=0 - import it into your dashboard and load it.

hi, i downloaded the preset selections, but they won show up on the dashboard. I'm drive the car today with base tune you send me and make same problem. before i install vt. on the car they have a code P0091 fuel pressure regulator 1 control circuit low but the high pressure fuel pump seem work normal, I removed it from the pcm. Do you think it's goin to make any malfunction on the car?

Yeah, it's good that you've mentioned that because at load values in the 1.6 I did not pay attention to any fueling issue. Yet there is one, even not big but enough to damage the engine. If you look at the log Data log full thro. - 2021-12-08 15.25.21 you will see that right before that trail of knock retard starts the fuel rail pressure drops from 16xx to 14xx and even 13xx PSI.
So at this point I highly recommend upgrading the HPFP internals and cleaning up everything in the HPFP (the spill valve, eventually change the O-rings, and so on).

Ok thanks, i will follow your recommendation. and i will notify you that it has changed