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Discussion Starter · #1 ·
So I installed a MBC on my passat 2003 b5.5 5spd..

I got a CEL light today and I'm alittle worried..what happend?

I'm spiking about 20 holding 15-16 psi vacuume is at 22 inHg. I'm also neuspeed chipped and I was already holding 14-15 before the mbc....I still have the n75 electrically connected and one nipple going to the intake. Also it kinda sounds like the wastegate is taying open but I'm not sure

Another wierd thing is sometimes when I'm in 5th after awhile it hits soft limp and only boosts as 3psi but 2min later it just goes away and drives normal...


Is my turbo going to take a sh!t?? I mean it would be a better excuse to go bigger but still....;)

Is it safe to drive like this?
Thanks alot
 

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20 seems too high, suprised your no going in to limp mode, with my h valve I hit limp mode once an a while when I spike 20, wierd about the soft limp.
 
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