Hey guys, i need help. I've recently purchase a 99 em1 swap b18c-r. Have a feeling the motor was turbo charge. I did a compression check and it came out 120 across. Kinda low don't you think. Gas pressure gauge is set at 6psi and it the car lags alot. Also the front grill has been cut, so i'm thinking the prevoius owner did turbo it. Whats my next step to do guys??? Tear the motor apart myself (I'm a noob about motor) or take it to king motor sports and have them take a look at it.

 

So whats the problem?

 

The problem is that it rides funny and I want to find out if it's been modified for turbo or na and go wich ever route it leads me to. I'm a fan or na and turbo so it doesn't matter to me.