Author Topic: Boost leak? (Read 729 times)

Alyzium · « **on:** January 07, 2018, 05:19:45 pm »

My car is hesitating under boost in 3-4th gear around 3000-4000 rpm makes a popping sound any idea what it is ?? Thanks

GrantC · « **Reply #1 on:** January 07, 2018, 06:06:11 pm »

Any CEL?

Any codes when you read what the CEL is for?

What car, year, mods?

Alyzium · « **Reply #2 on:** January 07, 2018, 07:15:22 pm »

No cel

It’s a 04 wrx with sti shortblock swap sti intercooler uppipe Down pipe bov (gfb)turbo is vf39 Cobb exhaust

SlowLGT · « **Reply #3 on:** January 07, 2018, 07:49:24 pm »

If you have a Cobb accessport, it may be beneficial to take a data log and see what the engine is going through when the popping sound is happening. And if you already suspect it could be a boost leak, you can fabricate a boost leak tester with $25 worth of materials from Home Depot in 20 minutes and see if there is a real leak. With the current information provided, we are all shooting in the dark.

https://forums.nasioc.com/forums/showthread.php?t=2205161

cmyles · « **Reply #4 on:** January 08, 2018, 11:37:33 am »

When was the last time your spark plugs were changed?
Were they gaped properly?

Author Topic: Boost leak? (Read 729 times)

Alyzium

Boost leak?

GrantC

Re: Boost leak?

Alyzium

Re: Boost leak?

SlowLGT

Re: Boost leak?

cmyles

Re: Boost leak?