Just installed anti-lag on my 335xi N54 AT mixed feelings on and question on launch...?

Mightbaal

Specialist
Apr 22, 2018
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2008 335xi E90
Ok so I installed my Jb4 anti-lag feature on my 2008 335xi AT N54. I am FBO+E85 (E60 gas)+ inlets on stock turbos.... I tried this out and it works but it tends to spike my avg_ign when I let off the volume down button and go. I run a custom map 22 psi midrange and 18 at redline (pretty much maxed out). Is this 35 dollar kit NOT really meant for stockers as there is not much lag as it is? Also if I try to use it on launch hold the button down in 1st and let off is that a spell for disaster? I am AWD and I launch in 1st full 22 psi but before this if I put to much stress on the launch (anything spooled up above 5 psi) the transmission would go into 2nd when brake boosting no matter what. I am xhp stage 3 flashed but wonder about my transmission sometimes. I just don't want to launch off the line with 22-24 psi spooled up and shatter my driveline components as it will grip like all hell with the tires I run plus the awd....
 
Oct 27, 2016
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The ign avg spiking is normal after letting go of the button. I just don't know how much help it's doing on stockers vs a big single, I know it's useful for us though. I'm not even sure how much boost you'd be able to build off the line even while holding the button down, might not be enough to do anything.
 

Jerry_3:16

Specialist
Dec 15, 2016
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Thats just how it qorkw. It retards timing till you let go of the button and it advances timing.
 

Mightbaal

Specialist
Apr 22, 2018
76
12
0
Ride
2008 335xi E90
Correct me if I am wrong but when AVG_IGN rises you lose a bit of power on one attempt I went from 0.2 AVG_IGN to 3.0! But I also have an odd problem with my AVG_IGN raising kinda quick post shift. My single 3rd/4th gear pulls will bring it down to 0.0 sometimes with an average of 0.2-0.4.
 

Rcboosted2007

Lieutenant
Jan 28, 2018
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Parts unknown
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07 335i
I have this installed and get engine light each time its used. My goal is to build boost off the dig. Any advice? I will get a log posted asap.