1989 Gmc Sierra Tbi Turboing?

[89sierra]

Hey i was wondering if there is anyoneone that knows what prom chip i would need when turboing my TBI 350 i have a hypertech prom chip in now for the cam and intake differences but i have wondered what i would have to do. i have heard of issues with the map sensor when turboing fuel injected car/truck but im not sure i find kits all the time that just give a new fuel pressure regulator and high flow filter but that seems that it would do nothing to the way the computer would control Air fuel and timing when under boost. if anyone knows anything about this i would love to hear!

 

thanks, Caleb

[Hypertech]

Hey i was wondering if there is anyoneone that knows what prom chip i would need when turboing my TBI 350 i have a hypertech prom chip in now for the cam and intake differences but i have wondered what i would have to do. i have heard of issues with the map sensor when turboing fuel injected car/truck but im not sure i find kits all the time that just give a new fuel pressure regulator and high flow filter but that seems that it would do nothing to the way the computer would control Air fuel and timing when under boost. if anyone knows anything about this i would love to hear!

 

thanks, Caleb

 

When turbo charging the vehicle you will need a custom map for the spark and fuel. We quit doing custom chips years ago. The chip you have would be better than stock but not exactly what you need.