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High IDC at 7k - stock turbo

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Old Jan 15, 2010 | 12:05 PM
  #76  
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http://www.ultimate-racing.com/Produ...stallKit.shtml

Don't know if its the best price but not bad deal.
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Old Jan 15, 2010 | 01:00 PM
  #77  
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Originally Posted by tephra
The way to find out if it is REALLY the injectors is to lean out the fuel map(7k/180-240load) SLOWLY until you see that change reflected in actual AFR.

If it changes immediatley then you know you are at the max of the injectors.

BUT if it doesn't change until you hit say 90%, then you know its another problem... like the fuel pump.

Before I jump to buy a FP, does this ^^still hold true? I believe I am seeing an immediate change in A/F. I will post logs tonight to have concurrence from the community.
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Old Jan 15, 2010 | 01:10 PM
  #78  
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Originally Posted by tsitalon1
Swapped relays with the HL relay... no change. I guess I'll order a pump, are the walbro still loud like they were in DSM's?

Best price for walbro with plug and play adapter?
They call them whinebros for a reason It is loud on my Evo 9. At first it is not, but it gets louder with time. The whine is a sign that the pump is working I have no idea about the adapter, but you can get a whinebro for as little as $90 w/o the adapter.
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Old Jan 15, 2010 | 01:15 PM
  #79  
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Originally Posted by nj1266
They call them whinebros for a reason It is loud on my Evo 9. At first it is not, but it gets louder with time. The whine is a sign that the pump is working I have no idea about the adapter, but you can get a whinebro for as little as $90 w/o the adapter.
Walbro on a DSM required an Adjustable fuel pressure regulator. Will that be needed for the Evo X?
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Old Jan 15, 2010 | 01:53 PM
  #80  
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Originally Posted by tsitalon1
Mine is USA version, I'm not sure if it'll work for you. Dbl check by IPW X rpm / 1200
nope dosen't work for me ... thx for your help though .... hope yr probs will be sorted out too

i tried [IPW]*[RPM]/1200 , [RPM]*[IPW]/1200 also no good
even tried with numbers, 31.25*x*/1000/1200 also no good

wondering whats wrong with my evoscan ?
it's v2.7b5 logging using mode23 jdm evox ride is 08 edm mr.

request id for idc by default is 23808747 which is same as RPM
request id for ipw is 2380A934 which woks normally

i'll try this and see if it works (x/1000*31.25*x)/1200
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Old Jan 15, 2010 | 02:14 PM
  #81  
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Guys,

It appears that ambient temperature is causing fluctuations in my A/F. I did lean my A/F's this morning and made 1 pull, the outside temp was aprox 32 deg F. And I verified that the A/F being reported by my Wb02 did leaner (11.5 and 11.6).

I made NO CHANGES and then performed two more pulls this afternoon and the outside temps were 65 deg F. Now my reported Wb02 readings are 10.8 and IDC dropped to 103% !!!

What the hell is causing such wide variance? Shouldn't the ecu compensate for weather?

Need help guys!! Logs and tune follow (the log named 06.30.42 was done this morning)

http://sites.google.com/site/tsitalo...edirects=0&d=1

If you compare this fuel map to my first post you will see it is much leaner, yet A/F richened.
Attached Files

Last edited by tsitalon1; Jan 15, 2010 at 02:44 PM.
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Old Jan 16, 2010 | 09:37 AM
  #82  
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Bump for help
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Old Jan 16, 2010 | 09:44 AM
  #83  
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Look at your load cell's your hitting, higher than you where in morning meaning your AFR's will change because you have not tuned fuel map for them loads.

When I tune AFR's I try to tune cell around my load cell cause weather will sometimes make you hit higher and lower cells. But replace your pump and then go back to tuning. Also you told me you been tuning for ten years right?


Also maybe being colder weather your pump might be working sometimes okay. Making your IDC's to go down. You won't get nothing right till you get IDC right.

Also reason I asked about you tuning for ten year what have you tuned in past??

Last edited by Whitewind; Jan 16, 2010 at 10:40 AM.
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Old Jan 17, 2010 | 12:42 PM
  #84  
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Originally Posted by Whitewind
Look at your load cell's your hitting, higher than you where in morning meaning your AFR's will change because you have not tuned fuel map for them loads.

When I tune AFR's I try to tune cell around my load cell cause weather will sometimes make you hit higher and lower cells. But replace your pump and then go back to tuning. Also you told me you been tuning for ten years right?


Also maybe being colder weather your pump might be working sometimes okay. Making your IDC's to go down. You won't get nothing right till you get IDC right.

Also reason I asked about you tuning for ten year what have you tuned in past??
Are you even looking at the data or making general comments? Look at the data.

I'll break it down....

Code:
6:30am                        3:44pm
Rpm 7148                    Rpm 7101
Load 218                    Load 208
A/F 11.6                    A/F 10.8
IDC 109                     IDC 102
Cruise LT 3.515625   Cruise LT 2.9296875
These two logs were using the EXACT same map, same load cells and almost the same load. The only thing that changed was the outside temps..... The load difference is only 10 and the rpm difference is only 47, yet A/F changed almost a full point.

Bryan / Tephra what do you think?

Last edited by tsitalon1; Jan 17, 2010 at 03:49 PM.
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Old Jan 17, 2010 | 01:27 PM
  #85  
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No was on my BB when I was looking at this. But im out, sounds like you just want Bryan/Tephra help you and not listen to anyone else. Good luck man on your fuel pump install.
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Old Jan 17, 2010 | 02:35 PM
  #86  
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^ what difference in the cruise trim was there?
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Old Jan 17, 2010 | 03:50 PM
  #87  
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Originally Posted by tephra
^ what difference in the cruise trim was there?
Added cruise Trim info:

Code:
6:30am                        3:44pm
Rpm 7148                    Rpm 7101
Load 218                    Load 208
A/F 11.6                    A/F 10.8
IDC 109                     IDC 102
Cruise LT 3.515625   Cruise LT 2.9296875
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Old Jan 17, 2010 | 03:56 PM
  #88  
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I would say:

1) your cruise trim is having a small affect, From memory, +4% used to equate to about 0.5AFR
2) the different air density between 6am and 4pm would play a role
3) the different load cells you are hitting between 220 and 210 would also play a role
4) Maybe the fuel pump decided to work a bit better at 4pm? :P eheh

Just change the pump, then go from there...
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Old Jan 17, 2010 | 04:05 PM
  #89  
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Originally Posted by tephra
I would say:

1) your cruise trim is having a small affect, From memory, +4% used to equate to about 0.5AFR
2) the different air density between 6am and 4pm would play a role
3) the different load cells you are hitting between 220 and 210 would also play a role
4) Maybe the fuel pump decided to work a bit better at 4pm? :P eheh

Just change the pump, then go from there...
Thanks to Everyone that looked at the data and helped diagnose the issue!

I will order a pump tomorrow and post the final results.

Sorry if I seemed combative, I just like to dissect the data completely and refer to the most experienced X tuners for their concurrence.

Again, thanks so much, I will post back in this thread with the results. I hope this data will help someone in the future.
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Old Jan 17, 2010 | 04:36 PM
  #90  
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plenty of other guys know more about tuning than me

are u going to go a stock pump? or wally?

Last edited by tephra; Jan 17, 2010 at 04:42 PM.
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