Issues or not?
Thread Starter
Burning Brakes
Joined: Oct 2009
Posts: 1,231
Likes: 1
From: Paramus NJ
Issues or not?
Ok, after a few days of driving my newly SC'd Z I noticed a few things.
1: At low RPM the car tends to buck a bit or maybe its better described as surging? Either or...
2: When I go WOT sometimes the car hesitates for a second then takes off like a Saturn V rocket.
3: My exhaust note sounds different. Before the SC install when I would decelerate I would get that crackling and popping most of us are well versed with, now the car sounds different. Not as aggressive a tone as before.
Does anyone know what can be causing this? Is it all from the tune of the car? Or is this normal behavior for a SC set up? All thoughts are welcomed and appreciated.
1: At low RPM the car tends to buck a bit or maybe its better described as surging? Either or...
2: When I go WOT sometimes the car hesitates for a second then takes off like a Saturn V rocket.
3: My exhaust note sounds different. Before the SC install when I would decelerate I would get that crackling and popping most of us are well versed with, now the car sounds different. Not as aggressive a tone as before.
Does anyone know what can be causing this? Is it all from the tune of the car? Or is this normal behavior for a SC set up? All thoughts are welcomed and appreciated.
Melting Slicks
Joined: Mar 2002
Posts: 2,880
Likes: 39
From: Austin Texas
This should be completely normal. Probably in the tune. Mine does the same thing, very slightly, it's worse until the car warms up. My SC'd Viper was WAY worse. The hesitation at WOT is normal too. I forget the explanation. I have found that never just stabbing it and rolling on the gas works great to cure this problem. My exhaust note is way different too and none of that decell gurgle as before the blower. I am no expert however. 
Last edited by triblk6spd; Jun 17, 2010 at 03:37 PM.
Melting Slicks
Joined: May 2008
Posts: 2,121
Likes: 2
From: CT
Ok, after a few days of driving my newly SC'd Z I noticed a few things.
1: At low RPM the car tends to buck a bit or maybe its better described as surging? Either or...
2: When I go WOT sometimes the car hesitates for a second then takes off like a Saturn V rocket.
3: My exhaust note sounds different. Before the SC install when I would decelerate I would get that crackling and popping most of us are well versed with, now the car sounds different. Not as aggressive a tone as before.
Does anyone know what can be causing this? Is it all from the tune of the car? Or is this normal behavior for a SC set up? All thoughts are welcomed and appreciated.
1: At low RPM the car tends to buck a bit or maybe its better described as surging? Either or...
2: When I go WOT sometimes the car hesitates for a second then takes off like a Saturn V rocket.
3: My exhaust note sounds different. Before the SC install when I would decelerate I would get that crackling and popping most of us are well versed with, now the car sounds different. Not as aggressive a tone as before.
Does anyone know what can be causing this? Is it all from the tune of the car? Or is this normal behavior for a SC set up? All thoughts are welcomed and appreciated.
2) Mine did this too. ECS was able to get rid of some of it but it still had it. Seems all SCed Z's have that issue. Like the other poster said you kinda of learn to drive around it and at the drag strip when shifting in WOT it doesnt happen. Not much can be done. Its just a characteristic.
3)) probably because of the blow off valve and cylinders have more pressure on decel. Pretty normal. Also can be adjusted in the tune though as well. There is a decel table that controls fueling in decel. That might have gotten modified. Not such a bad thing. More stealth
Melting Slicks
Joined: Mar 2002
Posts: 2,880
Likes: 39
From: Austin Texas
To be clear, my "surging" is so slight that most would probably never know it's there. Probably due to the cam. Once the car warms up it goes 99% away. Even then it's only at very low rpm's so I never even notice it.
Thread Starter
Burning Brakes
Joined: Oct 2009
Posts: 1,231
Likes: 1
From: Paramus NJ
You are correct, the "surging or bucking" is not like im bouncing back and forth in my seat but it is there and like most said its more noticeable when the car is cold. So im assuming everything that i'm experiencing is in the range of normal?
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