The wierdest thing happened

[97gsx_zeclipse]

I was driving my car and noticed my gas getting low. So I pull up to the next gas station and pump premium fuel. I start to drive and about a half a mile down the road my car starts to bog and shake and vibrate violently. It felt like the car was going to blow up. At first I thought that the IC pipe came off and that I couldn't boost, making the car shake. I checked all the piping and its nice and tight, so that's not the problem. This happened right after I left the gas station. I go back and they tried to blame it on me, saying that I might of put unleaded fuel on accident, but I always double check which fuel I put in my car. I'm pretty sure I put 91 octane in my car. It runs and boosts good untill I get to 55 mph. Then it's like hitting a wall. Any idea's?

 

[Chuck_3]

Sounds like a boost leak. I would do a boost leak test:

http://www.dsmtuners.com/forums/showthread.php?t=209898

Same thing happened to me. It was fine til about 55mph and it was like hitting a wall. I checked all the piping as well and it was all tight, turned out to be a shit 1g bov.

 

[91talon27]

Could also be fuel cut as this happened to me yesterday at the track when I had less than a half of a tank and was under boost. It felt like the car hit a wall then if I stayed in it it would pick back up and be fine. Also check to make sure your plug wires are in good shape and aren't arcing off of anything metal.

 

[turbosax2]

This does not at all sound like fuel cut. It sounds a lot like a boost leak though. Take Chuck's advice and do a boost leak test.