Car over boosted tonight : (
 

Was doing 2nd gear pulls for log and hit about 20 psi on a 7.5 psi map smh: ( lots of smoke and car won't start now ... :(
http://images.tapatalk-cdn.com/15/11...96475ea57f.jpg

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:(

Time for a V8!

Time for a new piston or four...


Either torched a hole in em or crushed the ring lands I would think...

Would be better and less stressful:(

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Yea it sucks only should've been running 7.5 psi but it kept going up. Hoping rod didn't go through block seen a little oil not sure if it came from dump tube or what.

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I know this sucks, but it is also an opportunity to be more awesome than ever before. I'll just leave this here:
http://www.cxracing.com/mm5/merchant...ry_Code=ESKSUB

Thanks man appreciate it and that's very true always room for improvement.

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That sucks mate :( good luck with the rebuild or whatever you choose to do.
If you don't mind me asking what kit were you running?

Was running a maperformance kit with precision 5858 turbo

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Been running great for the past month but switched map to run 7.5 on e85 instead of 11.5 and for some reason over boosted tonight.

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I'm interested to know what vacuum line popped off. Evap?

Dat China Express quality though...

Your tune should have had over boost protection built into it, extremely easy for a tuner to set it up as long as you have an aftermarket MAP sensor....

(Assuming you're tuned with Ecutek)

Sorry to hear that man :(

Replied to +1. Hate to see a car being down because a tuner was too lazy to set up a boost cut.

What tune were you running?

Were you still sporting stock internals? Guess it's time for a engine build :D



or to jump ship....

Yes I am tuned by delicious with ecutek .

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Was running delicious tune this map was supposed to be 7.5 psi on both 91 and e85 and I just put the e85 in not even an hour before this happened....

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Yes I was it was holding on strong with the right boost but it's not a surprise what happened on about 20psi. Just trying to see what caused it to over boost smh.

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Will be stripping it down in a few to see exactly what's going on with it.

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Delicious Tung was your tune source? That is strange, considering they advertise as having boost cut in their tunes - http://www.ft86club.com/forums/showthread.php?t=52200

@DeliciousTuning - Any feedback regarding why a 7.5psi tune with boost cut would see 20psi?

Not trying to call them out or "start" anything. Just figured I'd throw the question out there since OP is unsure of a cause.

I'd guess a vac leak with the EBCS not seeing boost, preventing the wastegate from opening. The only issue with that is ecutek boost cut (fuel cut) is based on MAP reading. I can't see OP's situation happening unless boost really did spike from 7.5psi to 20psi faster than ecutek's fuel cut kicked in due to Delicious setting the fuel cut delay too high, or the boost cut simply was not configured. Both would be tune related problems, even though a vac line did disconnect. We use EcuTek for these safeguards and trust tuners to set them up properly.

Hit 19 psi on a few pulls before it blew but did the math and I hit approximately 16.82 psi on the run where it actually went out.

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Ouch. Well, next time you know to stop beating on it once you go over target boost. You're usually good for a couple psi over boost targets but definitely not double the target. :(

Still interesting how the boost cut did not trigger even after multiple pulls overboosting. It sounds like boost cut was not configured in your tune, which they advertise it being on all FI tunes.

Yea wasn't trying to beat on it that's the worst part was doing logs and seen the problem. Pulled over to reflash the map to see if it would help then boom!! 1st pull it gave out.

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Ah, damn... Sorry to hear that bud. Let us know once you've figured out what happened!

Will do

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OP blew his engine on a MAP turbo with a Delicious tune. It's not CXRacing's quality that's in question. OK, the CX turbo looks awful, but the LS mounts look just fine. Certainly a bit cheaper than what Vorshlag and weapons grade offer.

I'm not suggesting in any way at all that the motor blowing had anything to do with CX racing... I'm just saying the mounts suggested are CX racing and they're well know for crappy quality, so if doing an LS swap which already entails tenths of thousands in itself, I'd go for something better quality out of the gate.

As bad as this sounds but I really hope your crankcase is OK and only valve/rocker issue is found. Don't get frustrated. As long as this isn't your daily driver; You get to purchase a motor build stand, Forged Internals and a good old after work project is made! You had the setup for something great and now you have a good reason to make it awesome.

BTW,
I'm still waiting on the tear down report!

Couldn't find any damage to block don't think rod went through block at all. Found a little puddle of burnt oil by dump tube. And checked o2 sensors and they were full of oil. Will be taking off intake manifold to see if I can find any damage

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So oil in the exhaust system?

So you knew the car was way over boost and continued to do "pulls" until it blew? Most people would have stopped as soon as they seen the first log.

The boost protection may not have worked as intended, but the blown engine could have been easily avoided by parking the car until you could resolve the issue. My $.02.

I'm really crossing my fingers for you. A bend valves that jammed a piston would be ideal.

Yes oil in exhaust.

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I parked and reflashed map to make sure the was no confusion with maps. Wasn't beating on it did only a 2nd gear pull.

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I'm hoping

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Depending on how you want your map set up, boost cut may not be applied. I found this out after I had my map set up a certain way (I had a FnG flex fuel tune from delicious, and psi by ethanol content). Was told there wasn't any custom data tables left in ECUtek to have boost cut enabled.

I actually ended up overboosting as well, was suppose to be around 15 psi and shot up to about 22, but this was because of a miscommunication of how I should have my EBCS set up. After I took care of that I was still seeing overboost by about 3psi but nothing to the extent of what I did previously.

Not pointing fingers at anyone, just figured i'd share and pass along the information.