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ECMlink WOT loss of power

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Jerren

Probationary Member
6
0
Feb 11, 2018
Myerstown, Pennsylvania
Hey guys, so I just got my cams done, along with a turbo upgrade! I'm having a problem with tuning though. When I go WOT the wideband read rich (9.5:1) and once i built 10 psi it would start bucking. I thought that too much fuel might be the problem.I have a wally 255 and FIC 1200cc. Raised it to 10.5 to 1 through link, still no power and wont build boost past 10 psi. I then did a boost leak test (had 4 major boost leaks) fixed them and still the same problem except now it will not boost past 5 psi. I thought it could be spark blow out so i put brand new BPR7ES in gapped at .26. Still the same problem.Changes plug wires to new NGK wires and same problem. Car idles and cruises like a champ with perfect AFR's. I"m thinking its gotta be ignition or timing related. Just trying to see if this has happened to any of you before and can maybe point me in the right direction. I have a buddy who has some spare parts that we are going to try swapping next weekend so hopefully we can figure it out but if anyone has some insite as to what it could be, I would be very greatful! I am posting a log of one of what happens, maybe that will help. Thanks all!!
 

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Have you checked your air filter intake?
I actually figured it out. It was evidently way to rich. I took out a lot of fuel from 4K up and it solved the problem. My wideband must have not been calibrated correctly and read it higher. Was actually around 7.5 to 1 ratio after 4.5k. Thanks for the help guys!
 
Your tune is very confused. Why do you have GM MAF selected when youre on SD? The SD table needs help. Need to build a nice VE table to start from and go from there. The one you have will never work. Youre breaking up at 10psi. Do a compression test and if good, fresh 5122 NGK plugs .024" gap and go from there. Setup your open loop and timing tables correctly as well as the injectors. If you need help, shoot me a message
 
Your tune is very confused. Why do you have GM MAF selected when youre on SD? The SD table needs help. Need to build a nice VE table to start from and go from there. The one you have will never work. Youre breaking up at 10psi. Do a compression test and if good, fresh 5122 NGK plugs .024" gap and go from there. Setup your open loop and timing tables correctly as well as the injectors. If you need help, shoot me a message[/QUOTE

I was actually roughly tuning the speed density off of my already tuned maf, so that I would have a start. I got it figured out it was just running super rich. And I mean like 7.5:1 rich LOL.
 
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