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Cruise and WOT log.. Can anyone comment?

1410 Views 8 Replies 2 Participants Last post by  SpecG, 
SpecG
Just did a run about an hour ago.. I have a cruise and wot log for scrutiny.. please fire away.

WOT starts from 2411 cell

(I have however did further adjustments to my map from this log)

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SpecG
I have another log.. from refining ign and maf curve.

also please see the picture attached.. I would like to know, how I can get rid of the enrichment at throttle opening?

Would tuning the latency offset help this? currently its at 1.10, maybe lower it a bit more.. to like 1.05 or 1.0?

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SpecG
enrichment at throttle opening.. seems to me the ecu is thinking the injectors are 1.1ms but in fact its lower..

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SpecG
Just a little analysis from doing my own build..Low end response from aftermarket turbo kits, maybe its not apple to apple comparison as the alpha 10 can max out more whp than the GT800... but nonetheless should give some ideas on low end day to day driving -

HKS GT800 91oct (can max maybe 800whp on pump)

RPM MAP PSI
2000 - -0.04
2400 - 5.55
2800 - 9.86
3200 - 12.84
3600 - 16.42

AMS Alpha 10 93 oct (supposedly got "stock drivability", can max maybe 900whp on pump)

RPM PSI (I assume its map psi from AMS dyno graph)
2000 - 1.8
2400 - 2.3
2800 - 5.8
3200 - 7.5
3600 - 11.8
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Ben Linney
had a quick look. you want some richness at 2k to help turbo spool / torque / cooling / det, cobb shelf maps are actually richer here than oem.

But at 2.3k / 2.8v your af correction is 93%, so scale your new intake lean it 7%. Your still hitting afr targets and 13.4 is acceptable at 2k. if you want to improve response then increase timing, weight up the risk to rods

Its a given the smaller hks turbo will spool better than the bigger ams
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SpecG
Thanks again Ben!.. Yup my fuel map is pretty much just rescaled.. but roughly the same fuel target as given in 93oct Cobb v3 map.

I tried to recalibrate the maf at around 2.8v already but it didnt seem to do much so I thought it was the latency that might need a look at.. I will post a log again soon
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SpecG
I changed the latency from 1.1 to 1.00 and did some minor tuning fuel multiplier

I think it looks better at the throttle opening instance..seems to get to target afr a bit sooner than the previous map. (maybe 400rpm?)

Spool difference from the previous map and this map

Previous Map

RPM MAP PSI
2000 - 0.04
2400 - 4.86
2800 - 8.7
3200 - 11.24
3600 - 15.77

Latest Map

RPM MAP PSI
2000 - -0.04
2400 - 5.55
2800 - 9.86
3200 - 12.84
3600 - 16.42
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SpecG
Log is from 2000rpm 4th gear pull up to 177mph (cobb mph)

done a few fine tune on the inj latency multiplier, fuel table and ign table after this log.. but this is pretty much what Im running..

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SpecG
Another log 4th gear pull from 2000rpm to 7000rpm if anyones interested. This is with untouched OEM MAF curves with Gotboost 76mm intakes..all that was needed was rescale fuel multiplier..and im pretty close to 100% on both banks.

Bank A always seems leaner than bank B.. which gets me thinking that the OEM fuel rails are flowing differently for each bank.. any confirmations before I waste more money on greddy rails?

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