boost problem

[4BangerV8Killer]

my boost seems to not be pulling the car much anymore.....i have a 50trim with supporting mods...i.e fmic 720cc inj walbro 255.

im boosting at 20psi right now but now lately it seems my car wont pull until i go above 15psi....then it pulls hella hard...could this be a boost leak or what? 0-15psi has like no pull at all then when i hit like 16-20 psi it pulls hella hard why is this?

 

[nightspeed87]

are you getting any knock ( have a logger? )
could be getting timing pulled. Or yea a boost leak is another possibility.
I had a boost leak at my injector seals and tb gasket and it made the boost feel weak
and didnt climb as fast .

Your avatar- ( its non turbo automatic I swear ) thats funny.

 

[na_turbotalon]

What are you using to tune/adjust fuel and timing?

 

[4BangerV8Killer]

ya im logging and tuning with a safc....i have a pretty nice street tune on it at 20psi....im not knocking at all if so maybe 1 count. and my timing isnt getting pulled too much averaging about 20deg goin lowest to about 18....im guessing boost leak cause my leftmost bolt on my fuelrail is broken but i just redid the tb gasket like a few days ago.


idk what else it could be....

 

[4BangerV8Killer]

????

 

[94TalonTSI1]

Have you done a boost leak test?

 

[4BangerV8Killer]

no im having trouble making a tester that doesnt leak right now i should have one today if i get around to it