My car was running fine, then I over boosted and now my car sounds like this..anyone have any ideas? I do not have an exhaust leak...

 

Video is private.

 

I fixed it sorry

 

My car sounded like that just before I had to get a rebuild....... What is start up like; any hesitation? Try a compression test. Any idea how much you overboosted by?

 

Sounds like a blown motor...

 

Start with a compression test (use a piston engine compression tester):

Rotary Resurrection home of the budget rebuild.

 

yeah I'm afraid that it does sound like it's blown.

How much did you over boost by?

 

I hit about 15 psi

 

And it will start up with no problems

 

I drove home from a race track about 75 miles on a blown engine (just had to keep it over 3000 rpms at stop lights so it wouldn't die). Blown doesn't necessarily mean it won't start and/or run. Depending on what's damaged, it can run; just poorly.

If the compression test shows it's ok, then you move on. But, it's the first thing to check in these situations.

 

Follow the link Mahjik posted because at this point the only way to find out for sure is to perform a compression test.

So I take it you are only set for 10 psi? Yeah these motors are not forgiving to any kind of detonation (pinging)... But don't feel too bad because you are in good company around these parts. I for instance, over boosted to 23 psi and blew 4 apex seals

 

Yucks 15psi, are you on stock ECU? What's your vacuum at idle now?

 

Probably a long-shot, but you might want to make a quick check of your boost sensor. Be sure the vacuum line is attached at both (sensor and manifold) ends.

 

Yes, and it bounces around -10.

 

Thanks so much, I was scared to post, I didn't want anyone jumping in my *** for not searching. I did the test and it failed, I get a 30, 30 then a jump to 120 looks like it's time to pull it!! Time to make her faster

 

Thanks, sound just like what happened, I couldn't idle at low rpms cause it felt like it was going to die out!

 

Do you know why you over-boosted?

And I'm not "jumping your ***". As mentioned already, you're not the first and won't be the last. Just thinking that if you know, it might be a good lesson for someone reading this now or in the future. And if you don't yet know, you want to find out so it's not repeated.