SECRETARIAT

Hello,
09 Turbo SS with GM1 Tune, about 21 lbs of boost.
Ran over big fat racoon this morning at high speed pretty much dead center.
Cracked Lower Deflector & driver side of it left hanging down.
Lower driver side of Intercooler slightly dented.
Metal brace that goes across from one side of the Intercooler to the other, underneath it, left hanging down on driver side.
The Issue: right after the accident the car had absolutely no boost and was very sluggish all the way home.
Then when I got up at noon and went to dealership the car had maybe up to 14 lbs of boost ??
It kept getting better during the afternoon. then around 5PM when I leaned on it pretty good in 2nd & 3rd it worked up to about 17 lbs and then went for a crap again.
Tried unhooking battery and ECU for 1/2 hour to reset things just in case.
On test drive no boost again except once where it hit about 14 lbs.
Haven't had a chance to do a pressure test.
What could this be and what would cause all the inconsistency of the boost ??
Thanks.

ECaulk

iTrader: (6)

Your intercooler is broken.

KMO43

Yup X2

SECRETARIAT

So it's got a crack and sometimes it's leaking and some times it's not, depending on temp etc ???

nathan112i

so it does have a crack in the IC is what your saying?

KMO43

What gear is it doing this? I was able to get a stock intercooler used for $80

no_ss

iTrader: (2)

Just buy a new zzp intercooler. Probably worth the money.

SECRETARIAT

No, I just know it's dented at this point. I just thought when they were answering that the Intercooler was broke they meant it was leaking pressure as if it were cracked.

KMO43

Yes for sure that's what I had before I broke it on a huge curb. The ZZP flows so much better and keeps IAT2s low

SECRETARIAT

Does it in all gears.
The confusing thing is how sometimes I'm getting boost and sometimes I'm not.

tomj77

iTrader: (2)

it may be cracked elsewhere. could have knocked the charge pipe loose on one side or both. im sure all 3, do a boost leak test asap and ull have ur answers.

nathan112i

i see what you mean, i would make a boost leak tester so you can tell for sure but if its bent in i would say 99% chance there will be a crack. look at your wires going to the lower map sensor to make sure they are not frayed.

SSlobalt

HAAHAHAHA!!! I had this exact issue about 4 years ago. Ic was broken. Big, fat bastard broke my radiator support tab, too.

KMO43

I had 3 bad leaks not 100% broken but intercooler was split top to bottom and it would hit full boost but taper off quick I blew my turbo running like this without knowing. Do a leak test and I bet you'll find a pretty big leak.

nathan112i

^ truth your map sensor may only be seeing 15-17psi but your turbo might be trying to crank out unsafe boost levels if there is a leak

KMO43

In your tune the boost is set for 21psi so the ECU is spinning the turbo up to max speed trying to hit that pressure but it's leaking out air before it hits the intake manifold. Therefor anytime you are boosting you are over spinning your turbo and doing damage to it

xcross

I threw a code for turbo over speed. Car would Boost only to about 16. 22 psi boost tune. Found intercooler to be cracked. I guarantee you have a boost leak. Put new zzp intercooler on and very nice

iboost

iTrader: (16)

That little brace thing under the intercooler is a "collector" or "condenser" or whatever they call it. It is held in by a single bolt on one side and a tab is slid into a holder on the other. If it is hanging, one of your intercooler end tanks is broken. I've never seen this plastic dent...just shatter

Terminator2

Oh this thread title is awesome I am laughing my ass off right now.
OP you broke your IC when you hit the coon so time for a new one.

blueLNFftw

iTrader: (16)

Just means the plastic is cracked and depending on the temp and rotation of it there is a leak. You could have cracked a charge pipe too.

Your issue is not rocket science. New IC and new charge pipes; done.
Check the MAP connections as well.

The coon I hit cost me $300 to fix because my intercooler popped from his teeth lol

SECRETARIAT

Thanks for all the awesome replies and info guys.
So these can never be welded or repaired ? My buddy runs a shop that can weld most materials.
I'll likely just buy the ZZP intercooler after I do the leak test to confirm so it's a repair and upgrade too.
I've read varying things on the ZZP's. Good fit on those ? Much of a performance increase for just the IC ??
Thanks again.

no_ss

iTrader: (2)

intercooler upgrade is always a good performance increase.

ECaulk

iTrader: (6)

Keeps temps lower, not really performance increase from the mod, just keeps the performance from being robbed during back to back pulls

SECRETARIAT

Also, can you change the intercooler and charge pipes with a GM1 tune in the car or will it throw the fuel ratio's out of whack ? If you go to charge pipes with better flow I thought you had to have a tune that you could adjust to the upgrades ?

Sorry, old dog just learning about the turbo / computer / tune world.

iboost

iTrader: (16)

To get the most out of your money for the charge pipes and intercooler you are better off going with a custom tune