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

Runs wierd after high speed?

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Old 07-16-2013 | 06:11 PM
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Runs wierd after high speed?

Hey my Cobalt always stutters and has extremely slow pick up after i break 100mph. This always happens and I dont know why and will do whatever is needed to fix it. For example: I brought it up to 110mph and then slowed down normally. 1min later at the light was challenged to a race and tried to launch @ 3000rpms and i went off like a turtle and felt like i was in my moms santa fe trying to catch this guy. Please help and thanks!
Old 07-16-2013 | 06:33 PM
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From: MO
Originally Posted by BlackMagicBalt07
Hey my Cobalt always stutters and has extremely slow pick up after i break 100mph. This always happens and I dont know why and will do whatever is needed to fix it. For example: I brought it up to 110mph and then slowed down normally. 1min later at the light was challenged to a race and tried to launch @ 3000rpms and i went off like a turtle and felt like i was in my moms santa fe trying to catch this guy. Please help and thanks!
Heat Soak Heat Soak Heat Soak.

What prize do I win?
Old 07-16-2013 | 06:35 PM
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From: Hockinson Wa
heat soak cant be that bad, whats the car boosting after high mph runs? and CELS?
Old 07-16-2013 | 06:37 PM
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From: YAMOMS
You got any way to measure IAT2's? With this huge heat wave, I'm seeing IAT2's like 130 sitting at a light.
Old 07-16-2013 | 06:41 PM
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From: Hockinson Wa
nice job taking stuff out of text and making it a quote a-hole.
Old 07-16-2013 | 06:42 PM
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From: MO
Originally Posted by SalvageBaltSS
heat soak cant be that bad, whats the car boosting after high mph runs? and CELS?
If he is talking a WOT to 110 mph that's a lot of freaking heat on a 95 degree day. Especially if he has little to no cooling mods.

Us LNF's have it so good.
Old 07-16-2013 | 06:45 PM
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From: Hockinson Wa
Originally Posted by umrdyldo
If he is talking a WOT to 110 mph that's a lot of freaking heat on a 95 degree day. Especially if he has little to no cooling mods.

Us LNF's have it so good.
I didn't see where it said 95 degrees . But yes people with Lnfs are lucky. they can put a aftermarket exhaust with out it sounding like a fart can.
Old 07-16-2013 | 06:51 PM
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Originally Posted by SalvageBaltSS
I didn't see where it said 95 degrees . But yes people with Lnfs are lucky. they can put a aftermarket exhaust with out it sounding like a fart can.
He didn't, I just noticed his location and looked up temps.

My guess is that he did a hard pull, sat at the light and heat soaked it more and then the car pulled all timing.

OP, you need to log IAT2 temps
Old 07-16-2013 | 06:56 PM
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Ok so i guess i should of said how my car has the zzp stage 3 kit dual bypass zzp ful exhaust 2.8 pully and so on. It is 90-100 degrees out here but this has also happened in the past and at night when it wasnt so hot just not as severe. not sure what an IAT2 is, nor what you mean by heat and soak, sorry. I dont have a IAT2 gauge (after a quick google search of what it was =))
Old 07-16-2013 | 06:59 PM
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From: Hockinson Wa
is the only cooling mod you have is the dual pass? you should be running a huge heat exchanger , and a option b.
Old 07-16-2013 | 07:01 PM
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Originally Posted by SalvageBaltSS
is the only cooling mod you have is the dual pass? you should be running a huge heat exchanger , and a option b.
ZZP Cobalt SS/SC Stage 3 kit

that is what i have not sure what the option b mod is I was looking into it but than forgot about it awhile back. but the heat exchanger is def on my car lol
Old 07-16-2013 | 07:06 PM
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Originally Posted by umrdyldo
He didn't, I just noticed his location and looked up temps.

My guess is that he did a hard pull, sat at the light and heat soaked it more and then the car pulled all timing.

OP, you need to log IAT2 temps
how would i go about getting the temps asap?
Old 07-16-2013 | 07:09 PM
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From: Hockinson Wa
ZZPerformance - Option B for Dual Pass IC #ZZ-OPTBK
Old 07-16-2013 | 07:17 PM
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Originally Posted by SalvageBaltSS
ZZPerformance - Option B for Dual Pass IC #ZZ-OPTBK
Is there anyway to tell if its already installed on my car?
Old 07-16-2013 | 07:19 PM
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From: Hockinson Wa
look under your hood?
Old 07-16-2013 | 07:29 PM
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I guess I can do that but I was looking for a point of reference like where the white option b piece usually goes so I know where to look for it. Good thing you said that tho, I might have started looking in the trunk
Old 07-16-2013 | 07:38 PM
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From: YAMOMS
Option B will be obvious with another coolant overflow tank on the left side of your car, standing in front of it.
Old 07-16-2013 | 07:40 PM
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From: Hockinson Wa
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Old 07-16-2013 | 10:06 PM
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Is it a hard install? I wanna do it by myself but im not anywhere near a pro. Do you think I should bring it to a place to get installed? Would a place even do it for me? Or someone?
Old 07-16-2013 | 11:05 PM
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Make sure the intercooler water pump works - sounds like its not.
Old 07-16-2013 | 11:10 PM
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From: Hockinson Wa
Originally Posted by BlackMagicBalt07
Is it a hard install? I wanna do it by myself but im not anywhere near a pro. Do you think I should bring it to a place to get installed? Would a place even do it for me? Or someone?
ive never done it. but seems pretty simple . I think there is a How to in the How to section.
Old 07-17-2013 | 12:02 AM
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Originally Posted by chris88z24
Make sure the intercooler water pump works - sounds like its not.
Forgot about that. OP this is the first thing to check
Old 07-17-2013 | 12:27 AM
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Originally Posted by umrdyldo
Forgot about that. OP this is the first thing to check
exactly what i was thinking
Old 07-17-2013 | 12:39 AM
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Option b is kind of a pain to install but easier than a dual pass. I got a thread on it that a lot of good member helped me out in; lots of good info in there.

Basically you need an aeroforce multigauge. Monitor you Intake Air Temp 2 (iat2) which is the temp in your manifold/post supercharger basically. If the temp is above 100 its not a good idea to beat on the car. It starts pulling your timing which means power. Hence when its nice and cool out or on your first pull the car feels a lot stronger.

X2 on checking the i.c. Pump too.
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