late boost 2002 wrx
 

can anyone help iam gettin a late boost on my 2002 wrx...just got it like two weeks a go and it doesn't boost till 4500 rpms..why and does anyone know how to fix it....people keep telling me different things..i know there is someone out there that has run into this problem that and the intermittent check engine light is driving me nuts HELP:eek:

Have you done a boost leak check? 1st thing anyone should do on a turbo car w/ boost issues

1. Check all fittings, make sure they are tight.
2. Inspect hoses to make sure there no holes or tears.
3. Grab a can of carb cleaner and spray it around the engine bay. If your RPMS go up, you sir, have a leak.

Boost leak test will find any and all leaks, breaks, holes, tears, or loose "fittings" in a fraction of the time.

The carb cleaner trick doesnt always work anyway...some leaks are only present when there is positve pressure rather then vacuum pressure.

so if you are at a dead stop and floor it, you only start making boost at 4500rpm?

My IC to throttle body hose blew off once, Ryan (area1320) found+fixed it inside 15 minutes. Maybe check there?

no no the boost gauge says its making boost but you dont feel it to 4500

wow is all i can say

my MPA IS .1 THATS ABOUT 14 AND A HALF PSI BUT IT DONT HIT THAT TILL ABOUT 4500 RPMS

nice dude your wow helps alot thanks

I had the same problem in my 03 after putting my up-pipe on... i would get SUPER lag even though the boost gauge read i was boosting... But it wasnt random.. it was from the gasket heating up and expanding and leaking. Id check all ur gaskets around ur turbo and exhaust

so..ughhh...how about that boost leak test?

I had a similar issue with my 02 9non stock). I suggest

1. Find out what code the car is throwing with that CEL. It may point you in the right direction.
2. boost leak tester - you can make one for <$10 in parts
3. Check for boost leaks - Each time I did this I hear no leaks. The second time I also sprayed soapy water on all my couplings and found a few small bubbly leaks from various places.
4. Check your wastegate - this was my problem. I was not hitting my target boost (22psi) at all in any gear. After I determined no major leak, I disconnected the WG line and was able to hit 22psi by 3900 rpm in 3rd gear. Just make sure you watch the boost gauge / romraider screen so that you do not end up overboosting too much.

when i got the car the dude had the wast gate and the rec unhooked the car was gettin good boost in first to second second to third would feel like someone rear ended me now i know that was over boost and it would do the same thing fourth to fifth..i cant find the damn wast gate vacuum diaphragm anywhere but fred beens and those guys over there are idiots..couldnt help me with out the last eight of my vin wtf was that gonna tell them...i been in this business since i was 19 and if someone had a question about a part i never asked for there vin unless they didnt know what they were driven and man its sad to say theres alot of people that cant tell you what kinda car they drive but they know the color

wastegate and recirc unhooked? With all that overboosting maybe your turbo is shot? everybody can keep guessing but without a boost leak test or data to help with i cant see anybody solving it on the internet.

P.S. you have been doing this since you were 19 mind me asking how old you are now? 19.5?

06WRBScoob..i forgot more about cars then you will ever learn..i may not know **** about boosted cars..but i would put any N/a car i built up agents your 06 any day and blow that retarded front end off...aint no one asked for a stupid comment..i figured i would get help here but it sems all you lil kiddies had daddy or a speed shop build your car for you..thats why the teenage death rate is so high cus retards like you that have rich parents send there factory detuned cars to a speed shop not knowing how to work on them there self..dude go play some more need for speed your safer that way

Bad boost solenoid maybe?

I love how people told you what to do but all you do is keep asking the samw questions like an idiot.

Dont get mad because you have no clue what your doing! Learn how to type, do some research on your car, then come back and ask a serious question. Nobody can type anything on here that will fix your car dude. Maybe you shouldent write back at all since were a bunch of retards that have rich parents? I have always worked on my own cars, not a speed shop or daddy.