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f55 equiped or f45

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Old Jul 9, 2007 | 10:59 PM
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Default f55 equiped or f45

not to sure what it means. some one told me its adjustable shocks. my c5 has a ride control switch. i move it around but it doesnt really adjust anything or do anything i cant feel a differnce on any setting. it has tour, sport, and perfomance. they told me a set of shocks about $2,500 i was awww hell na !! lol. i get back to you lol. i was ready to spend bout $1000 on some bilstein shock so much for that plan

Last edited by Corvette X; Jul 9, 2007 at 11:31 PM.
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Old Jul 10, 2007 | 07:34 AM
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If you have the 3 position switch, you have the F45 suspension option - also called "Real Time Damping" (RTD).

There is a kit available from GM to upgrade to the F55 option, also known as "Magnetic Suspension Ride Control" (MSRC).
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Old Jul 10, 2007 | 10:59 AM
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I believe the F45 (Selective Realtime Damping) was an option on '97 to '02 C5s. The F55 (Magnetic Selective Ride Control) option showed up in '03
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Old Jul 10, 2007 | 11:12 AM
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I have one of those 3 position F45 switches on my 02

It does absolutely nothing as well
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Old Jul 10, 2007 | 12:43 PM
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What does the MSRC do?
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Old Jul 10, 2007 | 03:16 PM
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Originally Posted by vmaquera
What does the MSRC do?
,
,
In the fluid in the shock, there are carbon particles.
When the switch is in the sport mode, it passes a current through the magneheilic (sp) fluid, and all the carbon bits, line themselves up in an orderly fashion.
This then causes more resistance to the shock absorber going up and down.
this electrical supply is controled by the BCM, and switches thousand times a second according to the number of pot holes you hit !!
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Old Jul 10, 2007 | 05:42 PM
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Default Ditch the F45.

I have a 98-coupe with the F45 option. I bought the car early this year and had the same experience, felt like the switch was doing nothing. A month later "shocks inoperative" "service ride control" appeared on the DIC. The F45 went south. F45 shock prices are out the roof so here's what I am in the middle of (total cost is about $600):

1. removing the F45 option from the Body Control Module (need a TechII and costs about $37.50 labor at most performance shops).

2. Installing C6 Z06 shocks (about $230 from Gene gmpartshouse.com - labour runs about $300).

3. C5 Z06 sway bars with metallic end links (optional, not doing this one).

People have reported a tremendous driving improvement after the above suspension install.
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Old Jul 10, 2007 | 07:17 PM
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Originally Posted by UK_WS6
,
,
In the fluid in the shock, there are carbon particles.
When the switch is in the sport mode, it passes a current through the magneheilic (sp) fluid, and all the carbon bits, line themselves up in an orderly fashion.
This then causes more resistance to the shock absorber going up and down.
this electrical supply is controled by the BCM, and switches thousand times a second according to the number of pot holes you hit !!
A lot of people seem to think the current flows through the shock ... it doesn't .... the current flows through a coil around the shock, creating a MAGNETIC field (hence the name "Magnetic Suspension Ride Control").

Also, the current is not controlled by the BCM, but by a seperate computer that is dedicated to ride control.

For a detailed description of the sytem, see:

http://www.corvetteactioncenter.com/....php?qstId=503
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Old Jul 10, 2007 | 08:03 PM
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There a few people on the forum who sware by the F-45 system. I my self feel that they were a complete waste of money. If you up-grade to the 06 C6 ZO6 shocks, you will be very satisfied!!!There a direct bolt in no mus no fuss install! You can program the option out of the BCM with a TECH II.

I could tell the difference between each mode but the differences in each seting were so minute that the system was worthless to me. Ive been told that during "EXTREME" driving conditions that they work well. I need a set up that works on the street. The C6 Z06 shocks work very well for me in my 02 Z06.

BC
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Old Jul 10, 2007 | 09:08 PM
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so i can take off the "ride control option" completly remove it and put some c6 shocks? i was told i couldnt i dont know? if so i stay in houston where can i get this done at , franks corvettes maybe? or say if i want to stay with ride control option is there any bad *** ones i can buy besides oe
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Old Jul 10, 2007 | 11:16 PM
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Originally Posted by Corvette X
so i can take off the "ride control option" completly remove it and put some c6 shocks? i was told i couldnt i dont know? if so i stay in houston where can i get this done at , franks corvettes maybe? or say if i want to stay with ride control option is there any bad *** ones i can buy besides oe
You have several options .....

1) Maintain the current system, purchase replacement shocks for about $2,000 and keep it going.

2) Upgrade the system to the F55 suspension (see article I linked to above for more info on MSRC system) by purchasing GM kit part number 12499507

3) Turn off the "active" suspension option in your car and put on "standard" (non-active) shock absorbers such as the C6 shocks or Bilsteins, or whatever. This requires either a set of resistors to "fool" the suspension control computer into thinking the active shocks are still on the car, or a visit to someone with a Tech2 to deprogram the F45 option out of the car's BCM.

HTH
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Old Jul 10, 2007 | 11:54 PM
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BlackZ hit the nail on the head!! You already know my recommendation!
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Old Jul 11, 2007 | 11:18 AM
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one more thing how often should they be replaced im hearing a squeaking noise when i go over humps an speed bumbs. it kinda sounds like and old car with the shocks gone out. not that loud but i hear it and i hate it so im guessing i need new ones i have bout 120,000 miles on it
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Old Jul 11, 2007 | 12:20 PM
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Originally Posted by Corvette X
one more thing how often should they be replaced im hearing a squeaking noise when i go over humps an speed bumbs. it kinda sounds like and old car with the shocks gone out. not that loud but i hear it and i hate it so im guessing i need new ones i have bout 120,000 miles on it
It's very likely that noise is caused by dry sway bar bushings. They're very easy to lube. It would probably take another 15 minutes while you have the car in the air to replace the shocks.
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Old Jul 11, 2007 | 05:12 PM
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Originally Posted by BanditDude
It's very likely that noise is caused by dry sway bar bushings. They're very easy to lube. It would probably take another 15 minutes while you have the car in the air to replace the shocks.
Having a AHA moment!! So it's the dry sway bar bushings and I thought it was my going south F45 shocks. Thankx for the info bud
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Old Jul 12, 2007 | 12:05 AM
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so how often should the f45 shocks replaced? i just curious
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Old Jul 12, 2007 | 12:40 AM
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Just ONCE! As soon as you see how much they are and you figure out what they DONT do, purchase C6 ZO6 shocks and you will be very HAPPY!!!

B
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