Bad Wastegate?

[S14Jer]

I am having all kinds of trouble lately... Been searching for 2 days to try to find a problem similar to mine but no luck.

I bought a 95 240 from a guy and i put a boost gauge on it and it is running at least 15 PSI on stock injectors. It has a walbro 255 fuel pump but no boost gauge. How could it be running higher than stock boost? I thought the stock waste gate cuts it off at like 7-10?

Also its running like it has a boost leak now, gets pretty shaky when i start to build boost and just doesnt feel like it has the same power. Under no boost engine runs fine. Also in 5th gear it seems to be able to boost just fine... I am so lost can anyone give me any insight? Im going to boost leak test it when I get some time.

[480sx]

If its a s13 motor that probably means that your wastegate isnt working at all. Either your vac source is messed up or your WG is inop.

Boost leaks are easy, just pressurize your IC system and listen for leaks.

[S14Jer]

Yea sorry is a blacktop sr20det. When I got the car he said it was stock boost but the car was fast as hell. Odd thing is it never felt starving for fuel, never got fuel cut so i figured everything was fine.

Then on the freeway I blew off an IC pipe, reconnected it but ever since then its been running ****ty, seems like a boost leak. But yea Im wondering how the boost could be so high without anything controlling it?