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ECMlink backfiring at high rpm/cyl 3 misfire/ blue smoke

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97-gst

15+ Year Contributor
1,234
1
May 16, 2010
Radford, Virginia
Ill post log when i get on computer but I just installed new motor was trying to tune. 2nd gear wasfine little knock, 3rd gear at about 6k it started to pop a little and I threw cylinder 3 misfire code. Well when I let off there was a lot of blue smoke coming out. Would too lean cause this? Maybe ill get some different plugs too. Engine/fuel mods in profile also I'm on e85
 
heres log, wouldnt it have a cyl 3 misfire for a reason though?

It says 80 psi LOL third was 30 and dropping. Blew ic pipe when shifting to 4th

Also just installed catch can to both spots on vc, blocked of intake, noticed catchcan was smoking frim filter at idle
 

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You really need to spend time on links site there demos are very helpful. :thumb:ECMTuning, Inc.
Your global and deadtime are way off. In the fuel tab you'll see a button that says calculate. click at put your injector size; should be Deadtime=330 Global= -57.4. That's just a base you'll have to adjust it slightly.

I assume your WB is in the front o2?
Uncheck cylinder misfire in DTC.
Uncheck lock intake temp in ECU input.
I'd advise learning and asking question about ecmLink and making sure everything is right with the car before any WOT pulls. Have you done a boost leak test since the build?
Also your WB needs to be logged and reading accurately.
I made some changes for you just open and Save To Ecu.

In reference to the catch can issue.
http://www.dsmtuners.com/forums/articles-engine-fuel/366890-4g63t-pcv-system.html
Btw just ordered a calan can.
 

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wb rear o2, changed plugs got rid of back fire, heres a log of 2nd gear and 3rd gear 3rd smoked pretty bad but 2nd didnt smoke at all. i took a video of my wideband gauge and it showed 11.3-12 the whole pull

For my global I tried what you told me but car wouldn't run. I calculated it using formula for e85. I mesn it felt great minimal knock, pulled stronger than I've ever had it but still smoking in 3rd and not second I'm confused LOL. It was about 5 more psi in 3rd than second and I can't figure that out either.

If my catch can isn't draining all my oil wouldvit causevit to smoke like that? Because it does have to travel slightly uphill from the backside of vc

Catchcan was causing the smoke. I appreciate your help
 

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