So I got my new boost controller in and wanted to install it. I do have a defi boost gauge so I could measure the psi. After installing the controller took it out for a drive. I floored it and the car spiked all the way up to 18psi. I immediately pulled over and turned the boost way down, I got the boost to sit at a constant 12-13psi. I did a 40 roll and went up to 4th gear, then all of a sudden I hear a boom.

Then white and blue smoke where pouring out from the exhaust, the engine basically acted like the time my turbo gasket went out and had no boost build up. I took the intake off and felt the compressor wheel and it does have a bit of movement too

The odd thing about it is that my down pipe now is blown(literally) it has holes in it closer to the turbo, i dont know what brand of downpipe it was came with my car,

I was wondering what everyones opinions are about this? let me know what you guys think or agree with me.

 

my opinion?

whenever you install a boost controller be sure to set it to 0 and then ramp up your boost.. be thankful the engine is one piece, of which hopefully it still is.

 

Would just compression testing it make sure that the engine is still ok? If it is bad on compression i guess its time to rebuild it! Maybe you could RotaryEvolution ahah, i need to get a compression tester to make sure its all good, i know that i was smoking out the neighborhood getting it back home though

 

You have got to post a picture or two of this.

 

Sorry man,but I can't help but picturing : what does this **** do?...BOOM!..smoke..Oh ****!
That stuff usually happens to me!

 

Requesting pic of downpipe!

 

I am planing to pull it all apart tomorrow, i only have a picture of it on but when I get it off the car tomorrow ill post more pictures haha.

 

Are all the blades on the exhaust side still there?!?

 

haha i have no idea! I wont know till tomorrow, Im pretty sure some blades broke and flew out of the downpipe lol, because there is dents like blades hit and pushed the metal out but didnt do through lol. Ill keep you all informed

 

holy crap. i've like blown the turbines on 4 s4 turbos and have had boost creep spikes up to 20psi and nothing like that ever happened.

 

haha right thats crazy right? I cant wait to pull it all apart lol

 

You know, that could be a result of a serious afterburn, which can very easily blow the turbo to pieces.

 

This is exactly what I thought when I saw the picture, quite serious to have made such a gaping hole, too. If he's lucky it'll be cheap thin exhaust and won't have harmed the turbo, but OP will just have to inspect to find out.

 

Any updates?

 

not yet, my days off werent days off lol, too much to do around the house for xmas and also had to much family stuff going on lately havent even pulled the down pipe yet lol, but trust me when i get it off i will definitely post what it looks like and keep you informed.

 

Holy ****. Sounds like you blew the hotside turbine up.

Either a piece of the turbine caused that hole or a backfire actually exploded right there.

I've killed a S5 turbo at 15 psi once. Blew white smoke out back and wouldn't produce boost at all. I would floor it and the boost gauge wouldn't go out of vacuum.

 

haha ya, i cant wait to see what the "damage" actually is, and ya thats what mine is doing blowing smoke and wont go out of vacuum lol

 

ok guys i got the downpipe off today, took me 3-4 hours because the piping expanded over the bolts when the turbo blew. I had to to pry on the pipe and use breaker bars and all kinds of random tools to even get the freaking thing off. Well i got pictures now i took o picture of the hot side of the turbo under the car. I will take more pictures when the turbo is off. I am buying a turbo here soon so when that comes in i will swap turbos out.

But here is the pictures enjoy!!!

 

Who needs fins on the hotside anyways!

 

haha not me lol my car i guess was tired of them lol

 

That is pretty epic. I've seen some blown up turbos before, but that one has to take the cake.

Here's an S4 turbo for sale. If your exhaust housing is still ok, then you can just swap them over.

https://www.rx7club.com/2nd-generati...turbo-1022244/

 

Heaps more flow without those pesky fins in the way

 

haha right!? thats crazy i have never seen that happen. I might get one locally from a mazda club im in, but that one is in crazy good shape....