Disappointing performance results
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Instructor
Joined: Oct 2012
Posts: 123
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Disappointing performance results
This spring I had an A & A Corvette V3 si trim supercharger installed on my otherwise stock 03 Z06. Andy and Josh were great to deal with. Rob at Champions motors installed the kit and got an impressive 592 rwhp
Last year I did a ½ mile charity event. The event records your ¼ times and ½ mile speed. You get 3 passes. Last year bone stock best ¼ time 12.49 ½ mile speed 220 KMPH (137 miles per hour)
So with 592 rwhp I was expecting a significant improvement.
This year best ¼ mile 12.04 and 230 KMPH (143 miles per hour)
Same tires, similar weather conditions, same track and same driver. Somewhat soft launch and not power shifting this year and last.
My first thought was that the belt has stretched and is slipping. I don’t feel any hiccups, bucking or surging to suggest that the belt is slipping. The belt seems tight and appears to be tracking straight. I don’t hear any squeal or chirping from the belt and I don’t see dust from the belt or damage to the belt.
I’m disappointed in the performance results. The car doesn’t feel much faster than stock. I’m new to F.I and help suggestions would be appreciated.
Last year I did a ½ mile charity event. The event records your ¼ times and ½ mile speed. You get 3 passes. Last year bone stock best ¼ time 12.49 ½ mile speed 220 KMPH (137 miles per hour)
So with 592 rwhp I was expecting a significant improvement.
This year best ¼ mile 12.04 and 230 KMPH (143 miles per hour)
Same tires, similar weather conditions, same track and same driver. Somewhat soft launch and not power shifting this year and last.
My first thought was that the belt has stretched and is slipping. I don’t feel any hiccups, bucking or surging to suggest that the belt is slipping. The belt seems tight and appears to be tracking straight. I don’t hear any squeal or chirping from the belt and I don’t see dust from the belt or damage to the belt.
I’m disappointed in the performance results. The car doesn’t feel much faster than stock. I’m new to F.I and help suggestions would be appreciated.
Thread Starter
Instructor
Joined: Oct 2012
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Melting Slicks
Joined: Mar 2005
Posts: 2,225
Likes: 42
From: Okinawa
My first thought was that the belt has stretched and is slipping. I don’t feel any hiccups, bucking or surging to suggest that the belt is slipping. The belt seems tight and appears to be tracking straight. I don’t hear any squeal or chirping from the belt and I don’t see dust from the belt or damage to the belt.
I’m disappointed in the performance results. The car doesn’t feel much faster than stock. I’m new to F.I and help suggestions would be appreciated.
Thread Starter
Instructor
Joined: Oct 2012
Posts: 123
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Good news, there is something wrong with your car. It should feel much faster then stock. I would call champions and let them know what is going and bring the car in for them to check out. Could be a few things holding you back belt slip, boost leaks, clogged cats etc. Do you have a boost gauge?
I wondered about a boost leak but wasn’t sure how to check that? I don’t have a boost gauge but plan to order one right away. Any recommendations on which gauge? Digital or mechanical? Interesting point on the clogged cats. I’ll look into that too.
Melting Slicks
Joined: Mar 2005
Posts: 2,225
Likes: 42
From: Okinawa
http://www.jegs.com/i/JEGS/555/41224...FVNo7AodVWQASQ $30 from jegs. You might be able to find one at the autoparts store too. I am recommending these for troubleshooting, might not match well in a c5. They make so really nice ones that let you know your peak boost. That way you wouldn't have to watch the gauge on your pull. If you have any logging software you could use that as well.
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Melting Slicks
Joined: Nov 2003
Posts: 2,213
Likes: 135
From: In front!
I got my boost/vac gauge at Orielly Auto Parts. It was about $65 IIRC and works great. You definitely want a mechanical. I'd get that and make sure you are running the correct amount of boost.
What are your a/f readings at WOT?
What are your a/f readings at WOT?
Instructor
Joined: Aug 2009
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Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
This spring I had an A & A Corvette V3 si trim supercharger installed on my otherwise stock 03 Z06. Andy and Josh were great to deal with. Rob at Champions motors installed the kit and got an impressive 592 rwhp
Last year I did a ½ mile charity event. The event records your ¼ times and ½ mile speed. You get 3 passes. Last year bone stock best ¼ time 12.49 ½ mile speed 220 KMPH (137 miles per hour)
So with 592 rwhp I was expecting a significant improvement.
This year best ¼ mile 12.04 and 230 KMPH (143 miles per hour)
Same tires, similar weather conditions, same track and same driver. Somewhat soft launch and not power shifting this year and last.
My first thought was that the belt has stretched and is slipping. I don’t feel any hiccups, bucking or surging to suggest that the belt is slipping. The belt seems tight and appears to be tracking straight. I don’t hear any squeal or chirping from the belt and I don’t see dust from the belt or damage to the belt.
I’m disappointed in the performance results. The car doesn’t feel much faster than stock. I’m new to F.I and help suggestions would be appreciated.
Last year I did a ½ mile charity event. The event records your ¼ times and ½ mile speed. You get 3 passes. Last year bone stock best ¼ time 12.49 ½ mile speed 220 KMPH (137 miles per hour)
So with 592 rwhp I was expecting a significant improvement.
This year best ¼ mile 12.04 and 230 KMPH (143 miles per hour)
Same tires, similar weather conditions, same track and same driver. Somewhat soft launch and not power shifting this year and last.
My first thought was that the belt has stretched and is slipping. I don’t feel any hiccups, bucking or surging to suggest that the belt is slipping. The belt seems tight and appears to be tracking straight. I don’t hear any squeal or chirping from the belt and I don’t see dust from the belt or damage to the belt.
I’m disappointed in the performance results. The car doesn’t feel much faster than stock. I’m new to F.I and help suggestions would be appreciated.
4DRush ran 8's on his first pass, never changed a belt or motor and never ran anything less. Everyone else had to work for it.
ECS has enough experience to know the difference between a short pull on the dyno and a full 1/4 mile pull. Those differences in the tuning are what is keeping you from greater gains at the track if I had to guess.
Instructor
Joined: Aug 2009
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Safety Car
Joined: Jan 2008
Posts: 4,797
Likes: 52
From: Boise
Lol you have obviously never lived at elevation. Go take your electronic boost gauge to Denver and compare it to a mechanical one and you will see how worthless electronic gauges are.
Instructor
Joined: Aug 2009
Posts: 211
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I'm not going to argue with you because this is way off topic and you are too dumb to understand.
Melting Slicks
Joined: Mar 2008
Posts: 2,412
Likes: 4
From: Houston/Dayton Texas
OP, boost gauge will tel you everything you need to know... You did pick up 6 mph on the back half and 1/2 sec in the quarter.. more power is one thing but driving it is another.. if this is the only time you do a race like this, improvements whatever they are , is always a good thing.
Drifting
Joined: Mar 2003
Posts: 1,533
Likes: 171
From: Oklahoma City OK
I am having a similar issue but it is not due to boost or anything. Power is there but getting it to the ground is the problem. You can see this if you compare time slips. Look for massive gains past the 1000 foot mark.
Burning Brakes
Joined: Aug 2009
Posts: 862
Likes: 16
From: Avon, Indiana
Electrical gauges have an atmospheric reference, just like a mechanical gauge. Electrical gauges use the same type of sensor design that OEM Map sensors use. If they were worthless every car in Denver would run improperly.