16g is in.. but boost is hitting 25+ psi.. any advice

[xucpxeclipsex]

hows it going.. i just put in the evo 16g and every time i floor it it hits 25+ psi.. i boost leak tested and it came out perfect.. fixed 2 boost leaks.. but it is still hitting 25+.. any advice??.. is it my wastegate??.. i have my boost controller and that isnt working.. is there any ways to check if my wastegate is working??.. or anything else??.. thanx.. i appreciate it

 

[truwarrior]

Well, appears you need to do some serious port work then. 25psi is to high for pump gas, 18-20 psi is pushing it.

Just check the waste wastegate travel once it's reconnected and make sure it not getting hung up on anything. Mine kinda of did on this one section of the turbine houseing. I ground it down before install the turbo.

Also hook up a boost source directly to the wastegate with the wastegate reconnnected. Spool should be faster and extend the wastegate as far as it should go. This way you can eliminate the boost controller as a potential problem.

 

[xucpxeclipsex]

sounds good.. anything else??

 

[xucpxeclipsex]

Well, appears you need to do some serious port work then. 25psi is to high for pump gas, 18-20 psi is pushing it.

Just check the waste wastegate travel once it's reconnected and make sure it not getting hung up on anything. Mine kinda of did on this one section of the turbine houseing. I ground it down before install the turbo.

Also hook up a boost source directly to the wastegate with the wastegate reconnnected. Spool should be faster and extend the wastegate as far as it should go. This why you can eliminate the boost controller as a potential problem.

what do you mean by your wastegate got "hung up"???

 

[truwarrior]

On the outside of the exhausting house I noticed an high point where the flapper arm travels. It was restricting movement at times. I had to bend the arm and grind down a small part on the housing. Wish I had a pic.

Someone might have dropped my turbo IDK. Just make sure the wastegate flapper moved without getting stuck on anthing. Push it in with flipping it and pull it out when flipping it.

I wasn't able to do that until I corrected the flapper arm and grinded down the housing a tad. I doubt it's your issue but 25PSI seems pretty extreme.

What were your results from running a boost source directly to the wastegate?

 

[xucpxeclipsex]

On the outside of the exhausting house I noticed an high point where the flapper arm travels. It was restricting movement at times. I had to bend the arm and grind down a small part on the housing. Wish I had a pic.

Someone might have dropped my turbo IDK. Just make sure the wastegate flapper moved without getting stuck on anthing. Push it in with flipping it and pull it out when flipping it.

I wasn't able to do that until I corrected the flapper arm and grinded down the housing a tad. I doubt it's your issue but 25PSI seems pretty extreme.

What were your results from running a boost source directly to the wastegate?

well the same thing happaned.. it kept shooting to 25 psi.. but i took the wastegate off and extended it a lil.. and that worked.. but it sux ### my turbo doesnt spool for jack.. unless thats how its supposed to be??.. or i could just be used to my 14b.. idk.. or unless i can just put the boost controller on.. idk.. ima try some stuff out