Help with tune

Discussion of tuning specific to MAZDASPEED6/MAZDASPEED Atenza/Mazda 6 MPS vehicles

Help with tune

by killjoy » April 7th, 2018, 7:57 am

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.
 
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Joined: February 28th, 2017, 8:09 pm

Re: Help with tune

by mituc » April 7th, 2018, 6:21 pm

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.
2008 Cosmic Blue Mazda 3MPS
Build engine + WMI + GTX3071, ~476WHP @31-32PSI
2008 Icy Blue Mazda CX7
Stock engine, intake and exhaust (YES!!), GTX2867 gen2 + Autotech HPFP, self-tuned to 320-ish BHP
VersaTuner guru
 
Posts: 881
Joined: December 17th, 2011, 2:47 pm
Location: Iasi/Romania

Re: Help with tune

by killjoy » April 14th, 2018, 3:16 am

Thanks for the patience. Been sick. I'll post those soon.
 
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Joined: February 28th, 2017, 8:09 pm

Re: Help with tune

by killjoy » April 17th, 2018, 9:42 am

here are some logs. if you need 3rd gear ill grab that tomorrow. the laptop died shortly after getting there.
Attachments
stock car monitoring gears 123..zip
(1.16 KiB) Downloaded 124 times
stock car monitoring gears 123.zip
(4.89 KiB) Downloaded 122 times
 
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Re: Help with tune

by killjoy » April 18th, 2018, 8:38 am

Here is a couple 3rd gear logs. let me know if you need anything else
:bouncinggrins
Attachments
stock car monitoring gears 3rd.zip
(9.98 KiB) Downloaded 124 times
 
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Joined: February 28th, 2017, 8:09 pm

Re: Help with tune

by mituc » April 18th, 2018, 8:55 am

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.
2008 Cosmic Blue Mazda 3MPS
Build engine + WMI + GTX3071, ~476WHP @31-32PSI
2008 Icy Blue Mazda CX7
Stock engine, intake and exhaust (YES!!), GTX2867 gen2 + Autotech HPFP, self-tuned to 320-ish BHP
VersaTuner guru
 
Posts: 881
Joined: December 17th, 2011, 2:47 pm
Location: Iasi/Romania

Re: Help with tune

by mituc » April 18th, 2018, 8:55 am

Oh you posted the 3rd gear logs in the meanwhile. Ok.
2008 Cosmic Blue Mazda 3MPS
Build engine + WMI + GTX3071, ~476WHP @31-32PSI
2008 Icy Blue Mazda CX7
Stock engine, intake and exhaust (YES!!), GTX2867 gen2 + Autotech HPFP, self-tuned to 320-ish BHP
VersaTuner guru
 
Posts: 881
Joined: December 17th, 2011, 2:47 pm
Location: Iasi/Romania

Re: Help with tune

by mituc » April 18th, 2018, 9:07 am

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).
2008 Cosmic Blue Mazda 3MPS
Build engine + WMI + GTX3071, ~476WHP @31-32PSI
2008 Icy Blue Mazda CX7
Stock engine, intake and exhaust (YES!!), GTX2867 gen2 + Autotech HPFP, self-tuned to 320-ish BHP
VersaTuner guru
 
Posts: 881
Joined: December 17th, 2011, 2:47 pm
Location: Iasi/Romania

Re: Help with tune

by killjoy » April 18th, 2018, 10:21 am

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
 
Posts: 14
Joined: February 28th, 2017, 8:09 pm

Re: Help with tune

by killjoy » April 18th, 2018, 3:27 pm

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.
 
Posts: 14
Joined: February 28th, 2017, 8:09 pm

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