ZZP Header - Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums
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post #1 of 23 (permalink) Old 06-18-2007, 12:14 PM Thread Starter
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ZZP Header

Well, my zzp shorty header will be here tomorrow. I am really excited about getting it put on. Will I notice a significant difference from the stock manifold????? It might seem late to ask, but I knew I wanted a header and didn't want the gmpp manifold. So will I notice a big difference, and if so, where in the power band???

2006 Black G85 Cobalt SS/SC
241 WHP 228 lbs/ft (Before header,dp, exhaust, and 2.9 pulley)
GM Stage 2 (with Nate's 2.9 pulley)
K&N Typhoon Intake
ZZP Mid length combo (1.75 primaries, 2.5 dp w/ hf cat)
Custom Magnaflow 2.5 catback exhaust w/ whisper resonator
B&M short throw shifter w/ stock knob
Ingalls Engine Torque Dampener

[U]Coming Soon: Cooling, Tune, lowering springs
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post #2 of 23 (permalink) Old 06-20-2007, 05:58 PM Thread Starter
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Comon guys.....Will I feel torque or hp with this header??????? ....or both

2006 Black G85 Cobalt SS/SC
241 WHP 228 lbs/ft (Before header,dp, exhaust, and 2.9 pulley)
GM Stage 2 (with Nate's 2.9 pulley)
K&N Typhoon Intake
ZZP Mid length combo (1.75 primaries, 2.5 dp w/ hf cat)
Custom Magnaflow 2.5 catback exhaust w/ whisper resonator
B&M short throw shifter w/ stock knob
Ingalls Engine Torque Dampener

[U]Coming Soon: Cooling, Tune, lowering springs
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post #3 of 23 (permalink) Old 06-20-2007, 07:15 PM
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you'll notice both....nothing extreme.


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post #4 of 23 (permalink) Old 06-22-2007, 06:50 AM Thread Starter
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First off, I love the header. I'm taking it back to the guy who put it on cause there were some problems. When my engine torqes down, my downpipe (stock one) is rubbing up against something (can't tell what it is). My heat sheild is also missing a screw and there is a very obnoxious ticking noise (maybe an exhaust leak). Other than that, I am really satisfied with the header.

2006 Black G85 Cobalt SS/SC
241 WHP 228 lbs/ft (Before header,dp, exhaust, and 2.9 pulley)
GM Stage 2 (with Nate's 2.9 pulley)
K&N Typhoon Intake
ZZP Mid length combo (1.75 primaries, 2.5 dp w/ hf cat)
Custom Magnaflow 2.5 catback exhaust w/ whisper resonator
B&M short throw shifter w/ stock knob
Ingalls Engine Torque Dampener

[U]Coming Soon: Cooling, Tune, lowering springs
jwolf8604 is offline  
post #5 of 23 (permalink) Old 06-22-2007, 05:48 PM
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I bet its rubbing on the sway bar....you can see it if you look through the engine bay, following the downpipe down where it crosses over the sway bar. Hopefully it isn't the coolant tube that crosses close by.


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post #6 of 23 (permalink) Old 06-22-2007, 06:16 PM
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Quote:
Originally Posted by jwolf8604 View Post
First off, I love the header. I'm taking it back to the guy who put it on cause there were some problems. When my engine torqes down, my downpipe (stock one) is rubbing up against something (can't tell what it is). My heat sheild is also missing a screw and there is a very obnoxious ticking noise (maybe an exhaust leak). Other than that, I am really satisfied with the header.
You might want to get that looked at and fixed. I know in the GTP world, the downpipe hitting the sway bar would cause false knock and pull timing = Less Power. Not sure if this can do the same on a cobalt?
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post #7 of 23 (permalink) Old 06-22-2007, 07:25 PM
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Originally Posted by KlugSRT-4v2 View Post
You might want to get that looked at and fixed. I know in the GTP world, the downpipe hitting the sway bar would cause false knock and pull timing = Less Power. Not sure if this can do the same on a cobalt?

my brother had a gtp a while ago and that was happening. we fixed it by flipping the sway bar upside down.
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post #8 of 23 (permalink) Old 06-23-2007, 01:29 AM Thread Starter
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Yea, the downpipe was vibrating against the sway bar when my engine would torque down. Got it fixed, and one of the bolts on the left port was loose causing the exhaust leak. He fixed both today, and offered me a gatorade and a ride in his 03 SVT Cobra (Convertable w/ 450 whp). We called it even.

2006 Black G85 Cobalt SS/SC
241 WHP 228 lbs/ft (Before header,dp, exhaust, and 2.9 pulley)
GM Stage 2 (with Nate's 2.9 pulley)
K&N Typhoon Intake
ZZP Mid length combo (1.75 primaries, 2.5 dp w/ hf cat)
Custom Magnaflow 2.5 catback exhaust w/ whisper resonator
B&M short throw shifter w/ stock knob
Ingalls Engine Torque Dampener

[U]Coming Soon: Cooling, Tune, lowering springs
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post #9 of 23 (permalink) Old 06-23-2007, 07:08 AM
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so did you notice much of a performance gain with the header?

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post #10 of 23 (permalink) Old 06-23-2007, 09:20 AM Thread Starter
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Absolutely. Like doc said, it is nothing dramatic, but it gives your exhaust a little bit better tone (I still have stock exhaust). You notice an increase in torque and in horsepower and the car sounds mean, even with stock exhaust. Not too loud, just sounds angry and feels like it flows better. I would def. reccomend!

2006 Black G85 Cobalt SS/SC
241 WHP 228 lbs/ft (Before header,dp, exhaust, and 2.9 pulley)
GM Stage 2 (with Nate's 2.9 pulley)
K&N Typhoon Intake
ZZP Mid length combo (1.75 primaries, 2.5 dp w/ hf cat)
Custom Magnaflow 2.5 catback exhaust w/ whisper resonator
B&M short throw shifter w/ stock knob
Ingalls Engine Torque Dampener

[U]Coming Soon: Cooling, Tune, lowering springs
jwolf8604 is offline  
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