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Some vf52 logs


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not the greatest log since i was up high in rpm I just really wanted a look at what IDCs were and boost.

 

http://www.mediafire.com/file/ttignjumdul/romraiderlog_20090725_202019.csv

 

learning view

 

http://www.mediafire.com/file/ihovhooozmg/LearningView_SS_7-25-2009 8 30 25 PM.jpg

Definately got some things we need to sort out up top and there is a bit of midrange boost spike as well.

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  • 1 month later...

You really need to find out what's causing the IAM to drop before you start tuning boost.

 

Also, your boost curve has a pretty large dip in it at 3400 rpm. Small dips are fine but this one is 2 psi.

 

Your boost at 5000 rpm seems to be too high. It looks like the WGDC is winding down but it's not winding down fast enough or the WGDC initial is too high.

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Actually there seems to be some sort of mechanical issue, if you look at the WGDCs you can see you are approaching 0% although you are seeing 20+ psi. You are pretty much grossly over shooting the boost targets. I am almost positive the high boost is what dropped the IAM. No fuel cut CEL? Has there been any other changes since then?
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Something is keeping the WG shut, I am amazed that a vf series turbo can even achieve this kind of boost pressure. Regardless stay out of any hard driving until you get your new setup. There could possibly be a pinched line or something, that is some serious creep.
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another thing i just dont understand is if i didnt have these problems before I changed the exhaust, how come they are apparent now?

 

Back to my first tuner, before i dynoed i was on stock exhaust beyond the downpipe, then I added the rest of the exhaust and thats when it got all messed up. Then I switched back to stock mufflers but with the rest of the 3inch turbo back and everything seemed normal.

 

Its just my thinking, (im not as smart as you guys when it comes to all this) but could the stock mufflers with the 2.25inch piping have been that restrictive matting to the 2.5inch piping on the ypipe?

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lower part of 3rd gear.

 

http://www.mediafire.com/?jztjitztznf

 

upper part of 3rd gear

 

http://www.mediafire.com/?my2io3u2wu3

 

run through 2nd gear

 

http://www.mediafire.com/?jjyzmerz01a

 

 

Sorry there wasnt enough space to do anything really safely so this is all i could settle for. But IAM is at 1

 

edit: heres an edited version I just copied and pasted the numbers from the one log to the other as if it was a continous log

 

http://www.mediafire.com/?yh0jyjuznmo

 

and forgot to post Learning View

 

http://www.mediafire.com/?ntxmzdikiza

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lower part of 3rd gear.

 

http://www.mediafire.com/?jztjitztznf

 

upper part of 3rd gear

 

http://www.mediafire.com/?my2io3u2wu3

 

run through 2nd gear

 

http://www.mediafire.com/?jjyzmerz01a

 

 

Sorry there wasnt enough space to do anything really safely so this is all i could settle for. But IAM is at 1

 

edit: heres an edited version I just copied and pasted the numbers from the one log to the other as if it was a continous log

 

http://www.mediafire.com/?yh0jyjuznmo

 

and forgot to post Learning View

 

http://www.mediafire.com/?ntxmzdikiza

Could you just post them directly to the site? I cannot get access from work to mediafire.

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  • 4 weeks later...

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