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EVO VII Injector Log

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Splitpi

15+ Year Contributor
1,204
28
Sep 13, 2005
Des Moines, Iowa
I just installed my EVO VIII 560cc injectors. I had them cleaned prior to installing and they measured flow of:

1 -> 608cc
2 -> 604cc
3 -> 600cc
4 -> 596cc

I installed the injectors also in those particular cylinders.

I set my fuel global at -25% and dead time at 0 us.

The car feels like its still running rich for me and my LTFTLow is -6.2% and LTFTMid is 7.2%

I should also note I didn't reset the ECU after the injector install, should I? The log is just an idle with me a few pumping of the gas.

Here is the log, I am running DSMlink.

One final note: Afterr the install, I did a compression test and boost leak. The seals on my old injectors were leaking pretty baddly. With the new seals, compression has been raised to 170,190,190,190 in 1,2,3,4 from the old value of 165,190,190,190.... though I may attribute this to running synthetics and cleaners to try and clean the rings a bit. But it definitally solved the boost leak around the injector seals. Just one final leak in the TB seals and it'll be good to go. I am very hesitant to do this though... seems like a pain to get it dialed back in.
 

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how does the car run other the idle?

Are you sure you don't have to change the dead time settings for the 560's?

Did you do a boost leak test?

What injectors did you have prior to this? Since injectors are easy, swap them and see if the problem goes away.

Fill out the above and post it back so i can help you further diagnose the issue.
 
Thanks Lan for the reply.

how does the car run other the idle?
The car feels normal... except sometimes after sitting it is hesitant to start. I believe this maybe due to too much fuel. But I am not positive.

Are you sure you don't have to change the dead time settings for the 560's?
According to everything I have read, the EVO's actually have a lower dead time than the stock 450's. Which in my mind then should cause a problem as the they should respond faster than the 450's.

Did you do a boost leak test?

Yes, I do have a boost leak in the TB.. which drains from 25 psi down to 8 psi in about 20-25 seconds. But this has existed for sometime and I'm lazy to mess with the TB.

What injectors did you have prior to this? Since injectors are easy, swap them and see if the problem goes away.

Stock 450's. I am half tempted to just put them back in tonight.

I did received some advice on on messing around with the 50 hz slider on the maf. I set the 50hz to -7% and fuel to -25%. This lowered my LTFTLo to about -2%. I have my LC1 wired into my Rear O2 and it reads about 170 raw (conversion issues from palm to pc 0v = 9:1 and 5V = 20:1 ... so I believe that equals (-(17/255)*11)-20 = 12.6:1, but I could be inverted so it might be 16.3:1, ((170/255)*11)+9 = 16.3).

Is simply fooling with air flow good? I am trying to move the 50hz airflow and the fuel global to reach a happy median... I think I am getting close. Here is a log of that.
 

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