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The F45 is the actual suspension parts - springs, sway bars, shocks, etc.
Active Handling is a system that monitors the car's attitude in a curve and corrects for the driver's intended line via individual application of brakes to the separate wheels.
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Active Handling - originally designated as JL4, is a system that will actually apply opposite front brake to control a spin. Option F45 is a suspension package that is adjustable for sport or touring, by adjusting the shock valving. F45 was replaced in '03 by F55 which is commonly referred to as Magnetic ride.
Active handling became standard equipment in '01 - and was optional starting on later model '98's.
So is Active handling and the F45/55 the best combination for handling?
What is the suspension considered if it is not upgraded to the F45/55
You'll get a lot of opinions on what's "best." The best handling package in terms of "go fast" equipment is the Z51 option, which gives you slightly stiffer springs, bigger sway bars, and a power steering cooler. Just depends on how you intend to use the car.
From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-‘18-'19
NCM Sinkhole Donor
Originally Posted by Wicked Weasel
Just wondering....
So is Active handling and the F45/55 the best combination for handling?
What is the suspension considered if it is not upgraded to the F45/55
As the others have said - the best handling would probably be the Z51 (non-adjustable) suspension. The base suspension is called FE1 or referred to as base suspension. My car originally came that way back in '98 - but with the optional JL4 active handling. Since then, the suspension has been upgraded with Bilstein sport shocks, Hotchkiss sways with urethane bushings, and BFG KDW's. It handles pretty good - jmho, of course!
The F45 suspension is exactly the same as the base suspension with the exception of electronically-adjustable shocks to control firmness.
The Active Handling system is a safety system that helps correct understeering or oversteering by using sensors to detect that control is being lost. These sensors include a steering angle sensor, yaw-rate sensor, lateral accelerometer and sensors in the ABS and Traction Control systems and will selectively apply brakes and spark retardation as needed in order to help correct the situation.
The second generation Active Handling system makes use of the F45 suspension (if your car is so equipped) for stability control. It would make sense that the F55 suspension is also used by the current Active Handling system for stability control, but I have not confirmed this.
The second generation Active Handling system makes use of the F45 suspension (if your car is so equipped) for stability control. It would make sense that the F55 suspension is also used by the current Active Handling system for stability control, but I have not confirmed this.
To the best of my knowledge, Active Handling does not utilize the F45 or F55 for input to the A/H system computer. The non F45 and F55 cars A/H work just like those with it. If the F45 and /or F55 were required for A/H to accomplish it's task, then one of those two types of suspensions would be required on all A/H equipped Corvettes.
Again that's to the best of MY knowledge.
BTW, the Z51 suspension is the better of the two suspensions, FE1 VS Z51.
The 2001 - 2004 FE4 Z06 suspension is the best, with the 04 Z06 shocks being the best within that grouping for handling. The F55 provides the best controlled ride of all, and because of the increased control over road irregularities, better handling can be achieved over non-F55 cars with the base suspension. That's to the best of my knowledge, with some opinion thrown in for good measure.
zo6vettepilot
Last edited by ZO6vettepilot; Jul 21, 2004 at 05:12 PM.