I was driving then I full throttled and at 3000 rpms and 10 psi of boost it bogs out bad the day before I ran it at a track with bad spark plugs but I got those replaced and it still does it any one know why this is happening I need help please

UPDATE!! I got the problem solved I just needed to gap my spark plugs to .024 now I'm pushing my 19 psi and it runs fine now thanks guys c:

 

Did you gap them correctly?

 

Yes I got them put on by a mechanic to make sure they were put on right

 

^^ mechanic? where? they will gap it as stock gapped and no different. you might want to pull them and check. on your evo 8 running higher than stock boost you should gap them down to .24. my peaks at 26psi and hold 22-23 to redline and plugs are gapped at .22.

 

& my car is tuned I'm pushing 19 psi but it only goes to 10 then bogs out bad

 

When they put them on I didn't see them play with the gap they just put them on how they came from the box?

 

Try and re-gap them to .22 or 23 it might help a lot of plugs don't even come ore gapped right. I'm about 75% sure this will fix you issue I've had 3 ppl that had the same problem and when I re-gapped there plugs it worked fine. Hope this helps good luck

 

Alright I'll try this then I'll keep you posted on what happens some people were telling me its a boost leak?

 

Boost leak is posiable as well but let's start with the easy stuff Lol but check any vacuum lines that are visible and make sure they haven't poped off especially the EGR one behind the IM that sneaky s**** likes to come
Off sometimes

 

Alright I'll check them lol and what's the IM?

 

Intake manifold. Make a boost leak tester with parta from lowes or home depot

 

My car boost at 28pis and i have ran into this problem before. One thing i looked at was gas. Also my car would do it on a bad tune. How long has it been doing it for?

 

It barely started doing it 3 days ago after I raced it at the track but I re gapped my spark plugs and now it doesn't bog out but I'm only pushing 10 psi instead of the 19 I was pushing what could be causing that?

 

Yes I got them put on by a mechanic to make sure they were put on right

 

Good info, I am having the same problem. I'm going to regap my plugs and hope this works for me.