Weird boost issue
#1
Junior Member
Thread Starter
Weird boost issue
Hi all, I have a single turbo fd making around 380-400 wheel at 14-15 pounds of boost. I got it tuned about a week ago and everything was working fine I was making the right amount of boost after some adjustment of the boost solenoid. Then after like 2 days now i can only make a max of 13 pounds and it drops to like 10-11 once I get near the redline which is 8k rpm. I looked over the exhaust and the whole charge pipe and couldn't find a boost leak. So I went into haltech and turned up the boost in the midrange and also the peak boost at 8k rpm. when I drove the car I could feel that the boost came on faster but still only peaked at 13 and then began to drop. I have some logs I'll include too for anyone who uses haltech. I cant figure out whats causing this there is not obvious leak in the charge pipe and nothing from what I can tell is wrong with the exhaust either. if anyone has encountered an issue like this please let me know I am going to check everything over again today to make sure I am not missing something. ill upload the log to google drive since it wont let me upload the file here.
link to autolog: https://drive.google.com/file/d/1yoa...ew?usp=sharing
link to autolog: https://drive.google.com/file/d/1yoa...ew?usp=sharing
#2
Arrogant Wankeler
Warmer weather, collapsing intake, dirty filter, collapsed catalyst, flex tube or muffler, failed exhaust/turbine gasket.
Have you checked all the wastegate lines and how is the gate diaphragm plumbed/vented?
Rag in the intrrcooler is always a good one.
I'll have to dig out a personal laptop one day so I can actually look at ecu files and logs.
Have you checked all the wastegate lines and how is the gate diaphragm plumbed/vented?
Rag in the intrrcooler is always a good one.
I'll have to dig out a personal laptop one day so I can actually look at ecu files and logs.
#3
Junior Member
Thread Starter
Warmer weather, collapsing intake, dirty filter, collapsed catalyst, flex tube or muffler, failed exhaust/turbine gasket.
Have you checked all the wastegate lines and how is the gate diaphragm plumbed/vented?
Rag in the intrrcooler is always a good one.
I'll have to dig out a personal laptop one day so I can actually look at ecu files and logs.
Have you checked all the wastegate lines and how is the gate diaphragm plumbed/vented?
Rag in the intrrcooler is always a good one.
I'll have to dig out a personal laptop one day so I can actually look at ecu files and logs.
The crack you see in this photo is on the bottom of the exhaust manifold. cant tell if its a crack in the weld that holds the two pipes together or if its a crack in the actual pipe.
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