Power loss while driving

[jsugarbaker]

Okay, I've checked all the threads I could find about this and none really describe my issue, they mostly describe a total power loss. My issue is very intermittent and makes no sense to me. First off here's what I'm talking about. '93 eagle talon Tsi Awd, fmic, 14b with 16g housings swapped, open bov and hks boost controller. I've been told that the controller is set to 7psi( I misplaced the paperwork so I'm not sure if this is correct). Also, when I purchased the car, the j-pipe had a nice gap which was causing major boost leak at the turbo(new housing fixed that issue) also have all new gaskets and seals on turbo and bolts. The fmic is a little beat up and the piping is exhaust tubing that's been "fitted" to the car, the couplings at some spots were leaking and I've fixed what I could with what I had( new piping kit to be purchased soon). With all this being said, the issue at hand is while I am driving my car, it has a sudden power loss and quickly comes back. It's as if the car dies while cruising. It does it throughout running( no temp range). It also does not drop gauges as it happens, everything stays functional. It's like the car is stalling as I'm driving. Wires look good, haven't checked plugs yet. The questions I have are, is this/could this be boost leak? Could it be fuel cut? Could it be I'm overlooking something very simple? I'm just not sure, and while my fwd is down due to an engine build, this worries me to an extreme.

 

[ChrisMgst]

Boost leak test? How many pounds it hold?
Post some pics of your engine bay.
My first thought of sudden loss of power is alternator.
Battery terminals nice and snug, with your engine grounds?

 

[jsugarbaker]

I asked about boost leak on the tuners page on Facebook, everyone there said that boost leak wouldn't cause this to happen. It holds boost just fine, I was told when I bought the car that the hks controller was set to 7psi, but I've never had it over 5 so far. Ill tighten the cable ends if I can and be sure that's not it. There's a junction block on the firewall that runs to quite a few grounds. I'm not sure why it's even there. Won't let me upload pics of my bay.

A few did say to check for boost leak, but most said that it shouldn't cause the issue I'm having

 

[Shnizzle]

i would say check plugs / wires because if your guages are still working properly when you lose power, its not the battery... but it sounds electrical.