i think one of my tubos went out cause 1st gear still pulls good but 2 and 3 pull like **** like i have no boost plz help me out

 

There is a very good chance that you have popped a hose off & are leaking boost & or vacum causing the turbos to fail from boosting.

Remember also that your RX-7 is 12 years old. Back in 92, Mazda didn't intend the pipes to last that long. They may be brittle & or cracked.

REgards

 

check all the oneway valves. i hed a problem which was similar, one of the valves under the upper intake manifold were on the wrong way round.

regards

 

First thing is to get a boost gauge. Without one, you are basically pissing into the wind.

After you have your boost gauge, you need to test your boost pattern:

http://www.scuderiaciriani.com/rx7/boost_test.html

The boost test will help you diagnose what area is causing a problem:

http://www.autosportracetech.com/RX-...leshooting.htm