Engine idles fine but when under-load it falls on its face with the slightest pedal pressure. When its idling its fine although when I rev it up slowly (in neutral) it acts like its trying to break-up for a second say around 4,500rpm. I've tried swapping out plugs and coils and same result. Heard it could be boost leak but took a quick look at couplers and all seems tight. Is there any sorta of sensor that can randomly take a **** or happened o rattle loose? Also i've thought about getting soapy water and running it around couples to cheap for bubbles but i just dont think its that. And the cam gears line up with marks on valve cover never got around to taking lower timing belt cover off. Any help would be appreciated! Thanks in advance. Motor is stock with a works flash. And this problem just randomly came about no warning signs.

 

Did you gap the spark plugs? .026

 

Ya the original plugs and current plugs were all gaped correctly. Going to take ic piping off this weekend to look at all couplers but also up for anymore ideas!

 

Try turning your boost controller down and see if it still does it.

 

Whelp it was the most common thing, fml! Although I ran through and checked tightness on clamps for the piping when I pressurized the system I found the leak. Doh!