VersaTune User Forum

Corksport hpfp, AEM COI, stock downpipe 2 3\8 ID straight piped from stock downpipe, pcv valves under vaccume. Ventura setup I believe. Upgraded coil packs. If I install the 98 octane high load it feels great but the car misses till I tune in the maf then it has no power. So I made a tune by adding parts of diff tunes which is prolly a horrible idea but its closer. Need help tweeking load and fueling. Is there a way to get air to fuel readings in 14.1 or 13.1 readings instead of .984 type readings, I don't understand what that means.

Hi,

Post a log with the problem. Please load this preset and log with it: https://www.dropbox.com/s/hmw8hc97atbqp ... vtpre?dl=0

If you want to get AFR readings instead of lambda you need to click the "Configure" option for that PID on your dashboard and change it to AFR for gas instead of lambda.

So take a log with the problem manifesting and we will see what the actual problem is.

Thanks for the patience. Been sick. I'll post those soon.

here are some logs. if you need 3rd gear ill grab that tomorrow. the laptop died shortly after getting there.

Here is a couple 3rd gear logs. let me know if you need anything else

So the MAF calibration seems to be fine, and the "no power" thing doesn't seem to be a real issue. In the only log you posted (the second one has less than 10 lines) I can see it took like 6 seconds from the moment you started accelerating in 1st gear and then hit 100Kmph. I also see load values of 2, air flow of 260+g/s (even 275), so it looks all right to me at this point. There's some knock there but it may be just noise, remains to be confirmed.
So yes, a 3rd gear log from 3000 to 6500rpm would reveal quite a lot of things if they are not right.

Oh you posted the 3rd gear logs in the meanwhile. Ok.

Ok, so indeed your car is slower than it should I guess. It is not slow, just slower than expected.
I'm saying it's slower than expected though because my CX7 with a SU TMIC as its only mod (and VT ofc), with extra 250kgs and less air makes 80-120 in the same gear (3rd) in 3.75-3.78s without fuel pump internals (so load does not exceed like 1.85-1.88, which means less torque where it actually matters).

Yah boost and fueling are still wonky. I set fueling in for 13 and 14 but its kinda doing it's own thing there. Would setting boost at a peak of 14 help it keep up through the gears

I guess my question is why would a tune without my intake tuned in feel faster while still missing then this tune with my intake tuned in. the high octaine high load tune tends to scare my wife because it pulls so hard. i hardly get a reaction out of this one. if i tune in my intake to it the that tune the car slows way down.