Car falls on its face when I floor it and a weird sound when boosting

[apedog]

So im in a bit of a dilema. I just put in my 16g in and replaced the header gasket.
Now when I boost what I can get, it sounds like a balloon getting the air pinched out of it. Every single time I boost it, it happens. Now that brings me to my second problem when I floor it it sounds like its backfiring? idk i cant really explain it. It just falls on its face literally the car will not like let me boost above 10 pounds otherwise it does that. The sound I think is a boost leak but i need opinions.

Now I have a broken off injector bolt I havent fixed yet. Could that be where the sound is coming from and why boost isnt there?

Mod List

Safc
16g
boost controller
680cc injectors

Thanks

 

[92AWDHX40]

no logger, wideband, do a boost leak test.

 

[kenuwine4g63]

. I went throught this exact same problem. Try to seal your j-pipe to your turbo connection better, the car is falling on its face because your getting knock and lots of it. Take some gasket sealer(orange stuff) and go around the gasket of the j-pipe. thats where the sound is coming from. Do a BLT and start at the turbo.

 

[apedog]

. I went throught this exact same problem. Try to seal your j-pipe to your turbo connection better, the car is falling on its face because your getting knock and lots of it. Take some gasket sealer(orange stuff) and go around the gasket of the j-pipe. thats where the sound is coming from. Do a BLT and start at the turbo.

I will try this haha
Like I seriously thought I bought a 16g that was bad but I ended up putting my old turbo back on and it still did that exact same noise. So I put the 16g BACK on and it STILL does it. Its not the header gasket because I replaced it The only other place I can think of is the injectors somewhere because theres only 2 bolts holding the rail on instead of 3

 

[kenuwine4g63]

well guess what i broke my fuel rail bolt too because i had a serious boost leak from one not being tighten down enough. So i have two bolts too(arnt we alike) but i have no leaks in mine but still check it. Also check the downpipe connection, i had a gap in mine and it cause slow spool and made a horrible whistling noise, eventually you will find it

 

[turbo98eclipse]

when i had this, it was a boost leak on my LICP

 

[DSM_IKE]

Ive got the same issue with the sound. But i know i have boost leaks, i need new couplers all the way around. Check everything and do a proper leak check, then come back and let us know if the problem still exists.

 

[apedog]

Ive got the same issue with the sound. But i know i have boost leaks, i need new couplers all the way around. Check everything and do a proper leak check, then come back and let us know if the problem still exists.

Did a boost leak test and found it was leaking right at the jpipe and upper intercooler pipe. Wasent leaking at the injectors like I thought.

 

[kenuwine4g63]

I knew it

 

[AlaskanDsm]

I knew it

, good to have those odd things happen to you so the next time they happen to you or others, you know exactly what what the cause haha.