2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

Engine Power Reduced?

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Old Jan 15, 2010 | 07:26 AM
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Thumbs down Engine Power Reduced?

My car has randomly done this 3 times.. Says engine power reduced.. And immediately surges bad and forces me to turn the car off.

Throws two codes: P1182 and P0068.

I can simply clear the codes once or twice OR wait about 10 minutes after it happens and turn my car on and it goes completely back to normal.

Has this happened to anyone? What was the problem.. and more importantly the fix?

It's intake related I believe so I am hesitant on taking it to the dealership. And if I put stocker back on and go in I'm afraid it might not have the problem anymore?

My buddy looked it up and seems that it's just something like a recall but not quite?

Any info on this would be appreciated.. Thanks
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Old Jan 15, 2010 | 07:38 AM
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This is from ethan's post in the nor cal thread, for info for anyone looking.

DTC P1182
Circuit Description
Important: The following applies to the intake air flow system performance diagnostic that is used in this supercharged engine:


• When referring to the "intake manifold models", the plenum volume between the throttle body and the supercharger is considered to be the intake manifold.

• When referring to "engine pumping", the supercharger and the intercooler plenum are considered to be part of the engine.

• The manifold absolute pressure (MAP) sensor that resides in the engine intake manifold is used to adjust the engine air flow estimates to balance the air flow models.


The intake air flow system performance diagnostic provides the within-range rationality test for the mass air flow (MAF), the supercharger inlet pressure (SCIP), and the throttle position (TP) sensors. This is an explicit model-based diagnostic containing four separate models for the intake system.

• The throttle model describes the flow through the throttle body and is used to estimate the MAF through the throttle body as a function of barometric pressure (BARO), throttle position, intake air temperature (IAT), and estimated SCIP.

• The first intake manifold model describes the intake manifold and is used to estimate SCIP as a function of the MAF into the intake manifold from the throttle body and the MAF out of the intake manifold caused by engine pumping. The flow into the intake manifold from the throttle uses the MAF estimate calculated from the throttle model.

• The second intake manifold model is identical to the first intake manifold model except that the MAF sensor measurement is used instead of the throttle model estimate for the throttle air input.

• A fourth model is created from the combination and additional calculations of the throttle model and the first intake manifold model.
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Old Jan 15, 2010 | 04:17 PM
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bump
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Old Jan 15, 2010 | 04:23 PM
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this may help





































































































































































































































































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Old Jan 15, 2010 | 04:25 PM
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P0068-MANIFOLD PRESSURE/THROTTLE POSITION CORRELATION
- VACUUM LEAK DETECTED

I think you have a vacuum leak.
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Old Jan 15, 2010 | 04:30 PM
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All the boost and vacuum numbers still read the same though. Kinda odd. it may be a leak somewhere ou the intake between the maf and the tb. i'm not exactly sure though.

Last edited by fwdGTP; Jan 15, 2010 at 05:11 PM.
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Old Jan 15, 2010 | 07:21 PM
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did he rub a hole in his intake? injens always do that.. it will look something like this










































































































































































































































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Old Jan 15, 2010 | 07:24 PM
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Lmao
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Old Jan 15, 2010 | 07:24 PM
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Does this happen when you shift?
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Old Jan 16, 2010 | 06:58 AM
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Originally Posted by slowswap
Does this happen when you shift?
No, while cruising.
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Old Jan 16, 2010 | 09:59 AM
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It happened to me when I was racing my friend. I got scared zhitless, lol because it happened after I miss shifted into 4th. It has never happened again though. But yeah I turned off the car left it a bit and then turned it back on, and everything back to normal. I didn't race him again or anyone else after that just incase lol. I don't think I have an intake leak but I will check right now just incase.
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Old Jan 16, 2010 | 04:32 PM
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My car did this too but the harness wasn't completely clipped into the throttle body and it just went closed on me and sat at idle. It scared the **** out of me too because it was right after i had the superharger off to port it and fill the holes. Easy fix for me
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Old Jan 16, 2010 | 05:10 PM
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haha..damn..this happened to me too
i was racing a wrx
miss shifted 4th
something fucked up
took it to the dealership
been there for about a week and a half
they called me about 3 days ago..
its gonna be covered under warranty
should have it back in about a week or so..

idk what the problem was though he just basically told me
"you fucked your **** up"

he said there were a bunch of like broken nuts and bolts and just
"fucked your **** up"
lol
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Old Jan 16, 2010 | 05:45 PM
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^ Hmmm.. Did you take it in w/ an aftermarket CAI?

Originally Posted by terry11
My car did this too but the harness wasn't completely clipped into the throttle body and it just went closed on me and sat at idle. It scared the **** out of me too because it was right after i had the superharger off to port it and fill the holes. Easy fix for me
Hmm.. Thanks for your input.. Hope mine can be an easy fix too.. This sucks.. 3 times it's happened already...

Originally Posted by Dynamico
It happened to me when I was racing my friend. I got scared zhitless, lol because it happened after I miss shifted into 4th. It has never happened again though. But yeah I turned off the car left it a bit and then turned it back on, and everything back to normal. I didn't race him again or anyone else after that just incase lol. I don't think I have an intake leak but I will check right now just incase.
Yeah man it might happen again.. I had it happen once.. and then a few days later it happened two more times.. and here I am.. Waiting for it to happen again....

Hmmmm......... Lemme know what happens after you check your intake and what not..

Last edited by ChriSS/SC; Jan 16, 2010 at 05:45 PM. Reason: Automerged Doublepost
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Old Jan 16, 2010 | 05:47 PM
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this has happended to me a couple of times too, my intake is actually starting to get a whole in it?
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Old Jan 16, 2010 | 05:55 PM
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^Think that could be why? What kinda intake do you have?
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Old Jan 16, 2010 | 05:57 PM
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im about 95% sure that its not a hole yet but thats beside the point, i have an Injen...
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Old Jan 16, 2010 | 06:01 PM
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hahaha now you know how it feels. Whats the last thing you done to your car recently?
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Old Jan 16, 2010 | 06:10 PM
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Not much man.. Just changed a couple things w/ my tune.. Havent bought anything mod wise..
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Old Jan 16, 2010 | 06:10 PM
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Take your TB off and clean it. It's probably dirty I had this happen after my meth install found out my Tb dirty and that
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Old Jan 16, 2010 | 06:14 PM
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mines does it. its been doin it for abouit 2-3 weeks in a row and it was cuz my intake manifold cracked all over the edge of the bolts where it sticks to the supercharger...yea its pretty bad. =( am looking for a stock intake so my warranty can fix it but it really sucks!!
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Old Jan 16, 2010 | 06:18 PM
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Originally Posted by jonathan923
mines does it. its been doin it for abouit 2-3 weeks in a row and it was cuz my intake manifold cracked all over the edge of the bolts where it sticks to the supercharger...yea its pretty bad. =( am looking for a stock intake so my warranty can fix it but it really sucks!!
hehe i got a stock intake. How much you willing to spend
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Old Jan 16, 2010 | 06:20 PM
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**** that this is my thread give it to me


Oh.. wait.. I think I have my stock one haha.

Might have to put it on and take it to the dealer....
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Old Jan 16, 2010 | 06:21 PM
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hmmmmmmm











































































































































































































































































































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Old Jan 16, 2010 | 06:22 PM
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lol god damm u guys are always ready to make bussiness huh? lmao jk. i have mines but am missing the middle down pipe part of it =z
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