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SoCalEvo.net Shop
What turbo is it using? Sounds like compressor surge. Some of that can be possibly dealt with MIVEC tuning. But most would be the turbo sizing.
Mike W
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Sorry for the wall of text, but this is at low RPM at part throttle cruising. It's a BBK-B BB with the anti-surge cover too.
Other things I'll try to test: Spark plug coils, IAT sensor on the UICP, my imagination.
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Canyon Racer
subscribed. I want to know final diagnose
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SoCalEvo.net Shop
Your tuner can tell you easily if it is compressor surge. Would save you a bunch of time. What does he say?
Mike W
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Still haven't been to the tuner since he's 65 miles away. Our landlord says we're getting evicted if I pop the hood in the garage ever again, so I suppose I'm gonna surrender soon.
Problem comes and goes. One minute the car dies and I'm thinking "oh I'm screwed, better call a tow truck" the next minute I restart the car, totally fine for a week or two straight. Also when it does die it smells weird, either rich or oily or something. Plugs 1, 2, and 4 got oil on them too.
Here are my wack ass, totally unscientific troubleshooting efforts so far:
Sodomized the PCV valve every which way.
Fiddled with the previous owner's subwoofer trunk wiring.
It's not science, but I could swear doing the above makes the problem go away. I'll update this thread if I have a proper solution. One thing I notice is that every time I throw stuff in the trunk the problem either appears or disappears. Maybe the wires are shorting on something. I'm going to pull all that crap out this week, get a new battery and clean connectors.
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Canyon Racer
I think it could help is you share your location. Maybe guys here can give you another tuner or shop that can help you
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I'm in West LA, the tuner is far East. He's inviting me to stop by but I'm just being stubborn. I'm afraid it's something simple and I'll waste 130 miles round trip on being a doofus. Got a new PCV valve tonight. I could swear the throttle response has improved, need to verify.
My previous car was tuned by RRE so I'll probably be coming back for a 2.3 once I screw this up. Pick a card Mike, any card. Unfathomable debt is the American way of life, I'm ready.
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Canyon Racer
If you are west LA, there is not too much distance. I think the best to do is take your time and plan a route off highways. Other is ask for a favor in West LA for data logging and work in a e-tune fashion. You can send the file to the tuner or even post the data here or Evom. I'm sure you someone can help you for a beer and a burger.
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Experienced
Not at Evos have the same reading at idle, or decel on the boost gauge. You might want to take a look at the vacuum hose from the FPR line to boost sensor and check for cracks at the ends. If your boost reading ever changes from what they usually are, that's the first place I'd look!
You may want to pull your IAC, and see if it looks stripped on the bottom . Good luck!
N.
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Do you know where the remote wire is hooked up to (for the amp)? There is a possibility that he may have tapped into wrong place in the wiring harness or even to fuel pump. I have seen weird things like this. I once saw a newer corolla that was diagnosed with a bad ecu but after installing a new ECU it was still acting up at times. We ending up finding out the wiring harness in the trunk was getting pinch whenever there were things in the trunk. We repaired the wiring and put extra padding around the wires where it was getting pinched. It was having the same type of idle shutter...
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