These are 3 Volvo cold start injectors, drilled and bolted into the intercooler pipe before the throttle body. The rubber o-rings on the injectors can be used as sealing gaskets to keep air from leaking. These on my car flowed enough fuel to sustain 16-17psi boost with a normally aspirated LH 2.0 fuel system. For perspective, thats enough power to go door to door with a 1993 Ford Mustang Cobra (quarter mile 14.5@98mph) to over 100mph. How do I know? I did it, that's how. Yeah, he was mad.