~!losing Power!~

[komokefe]

ok guys after getting my car back from the panel beaters getting the back rear replaced, and putting in my new spark plugs ( NGK iridium MAX ) i notice my car is losing boost when holding on 5psi or more ( like it doesnt wanna boost )? and like this morning i go to boost my car, its seems like it cuts the boost ( after 4500rpm ) with no power and then boost kicks back after?

could it be coils or coil? intercooler pipes loose? etc

cheers

[tridentt150v]

Leak in the intercooler pipes, check your hose clamps etc

[komokefe]

checked for leaks but no sign? *NOTE* can my bov ( hks ssqv ) cause these problems coz ive noticed afew times today that i instead of the whistle it made a wooosh? i was told that bov symptoms can also stuff up your timing? which i think could cause the problem im having now? but im up for any ideas

cheers

[RBwhatever]

Does it take a long time to rev out?

Kinda gets stuck and feels like the cars not going any quicker?

When it boosts, does it hit full boost, then drop back down a few psi?

Does it hesitate and backfire?

[komokefe]

Does it take a long time to rev out?

Kinda gets stuck and feels like the cars not going any quicker?

When it boosts, does it hit full boost, then drop back down a few psi?

Does it hesitate and backfire?

yep things that happen are its like car wont go any faster coz of the lag and also when hitting full boost it hesitates then back to normal for a couple of seconds and then backfires? also this problem accured when i got my new spark plugs installed? NGK IRIDIUM MAX?

cheers

[RBwhatever]

yep things that happen are its like car wont go any faster coz of the lag and also when hitting full boost it hesitates then back to normal for a couple of seconds and then backfires? also this problem accured when i got my new spark plugs installed? NGK IRIDIUM MAX?

cheers

What I described was symptoms of a boost leak. Usually when intercooler pipes were not done up properly. Also the woosh sound instead of the regular bov noise can also be caused by a boost leak.

How did you test for leaks?

You can do a leak test.

What you'll have to do is,

1. take your pod/airbox and AFM off.

2. use a baked bean can (full) and put it into your rubber intake pipe (assuming its still the stock one).

3. tighten up the hose clamp onto the tin creating a seal.

4. Open the throttle body with a brick on the accelerator pedal, so you can read pressure on the boost gauge.

5. take a hose that is plumbed into your intake between the turbo and the plenum or off the plenum itself.

6. Get an air compressor and pressurize the system through the hose and get someone to read the psi on the boost gauge. you only need about 5psi. you can use the compressors at the servos.

7. Listen for a leak. and use soapy water in the spray bottle to find exactly where it is.

It is easier to find a boost or pressure leak using this method because the car is not running.

If it's not that it may just be your plugs. But usually plugs just cause a hesitation/missfire.