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Old 09-15-2011, 04:38 PM   #1
caverman


 
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BC Coilovers or Pedders Xa - what are your settings

Since coilovers are about to be on my car I was curious to see what those of you with BC Coilovers or Pedders Xa have your settings at. Maybe this will be a good thread for everyone to start posting you settings for others to try.

Personally I'm looking for a smoother than OEM ride for daily usage. I feel like even OEM is a little on the bouncy side for me. Then I would like to stiffen everything up for AutoX events and/or drag racing.

What settings have you tried for your different driving situations and what is your feedback for those settings?

Example: For daily street driving it seems like 15/15 (15 front / 15 rear) makes it feel like OEM and going 12/15 might make the ride even smoother.

Then, what settings are you using when you do an AutoX event?

How about drag racing? Any suggestions on what seems to work good there?
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Last edited by caverman; 09-15-2011 at 10:15 PM.
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Old 09-15-2011, 04:50 PM   #2
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My settings are still in the box. Hopefully get some work done this weekend and get them and some other parts on.
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Old 09-15-2011, 05:27 PM   #3
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It will ultimately be up to you, and what feels right to you. I went to 16/14 and It looks like that is where it will stay for now. Untill you crank it up over 20 you will not have any ride harshness, and even then only on bad roads.
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Old 09-15-2011, 05:57 PM   #4
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It will be up to you and how you want it to feel. Also has alot to do with your local roads. I have Pedders Xa's set at i believe 7 and 10 front/rear from soft and it feels very good as a daily driver imo
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Old 09-15-2011, 10:07 PM   #5
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Thanks for asking this question. I'm curious to know what others are running as well.

I'm still set at 15/15 since the install. I will be doing an autox this weekend so I am planning on doing 21f/24r to see how that goes. I really have no clue about what do with it for an Autox. I just "think" stiffer should be better. Right?

:cheers:
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Old 09-15-2011, 11:22 PM   #6
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I tried these below settings.

15/15 - very stock like ride
20/20 - noticeable stiffer but not that bad, but weight transfer was bad
15/10 - weight transfer when launching the car is MUCH better

Still running 15/10 right now for the past 500 miles and I'll be keeping it here as a DD.
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Old 09-16-2011, 12:20 AM   #7
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The setting will be based on your preferences but we start a lot of customers at the following:

Street: 10-12 Front and 10-12 Rear

Autocross: It is really dependent on the surface and what else is done to your suspension?

Drag: 0-3 Front and 20-28 Rear depending on track conditions

I've been playing with these at a lot of venues and with more information or with a description of what's happening once you actually start doing these activities I can give you better information.

Good luck!

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the biggest thing with the pedders is its design there made to be comfortable and the best thing is they retain your factory warranty
This is a little misleading.. If GM or GMPP offers a product such as coilovers they can not void your warranty if you choose a competitive aftermarket equivalent. We offer both Pedders and Pfadt along with Hotchkis and BMR.

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Old 09-16-2011, 07:55 AM   #8
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Im at 14-10 with Pedders right now... Ride is good until speeds are up (over 50mph) and you hit dips. Then you "feel" it. Will play with it Oct 1st at my Autox but I will def be in the high 20's. Like a 27-20 or 24-20 something like that.
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Old 09-16-2011, 10:56 AM   #9
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With my street 2 kit with coils from Mike (bushings, sway bars & coils), I have kept mine at 12F/6R and it rides like OEM without the under steer and no back end wobbling in a hard turn. Planning to crank that up to 24/12 and tweaking with these # in Nov on a road course.
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Old 09-16-2011, 11:41 AM   #10
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Quote:
Originally Posted by JDP Motorsports View Post
Drag: 0-3 Front and 20-28 Rear depending on track conditions
this surprises me, i figured you would want a stiffer setting in front and a lighter setting in the rear to allow for the weight transfer to get over the rear wheels?

not questioning you just learning...
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Old 09-16-2011, 12:24 PM   #11
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Quote:
Originally Posted by toilets View Post
Im at 14-10 with Pedders right now... Ride is good until speeds are up (over 50mph) and you hit dips. Then you "feel" it. Will play with it Oct 1st at my Autox but I will def be in the high 20's. Like a 27-20 or 24-20 something like that.
I would suggest going with 20F 22-24R to start depending on the surface. These cars tend to understeer and by having stiffer damping in the front you're basically making it worse. From there you can adjust the damping along with air pressure to help dial it in to your driving style. Sway bars are the best tool to control chassis balance however.

Quote:
Originally Posted by kbui View Post
With my street 2 kit with coils from Mike (bushings, sway bars & coils), I have kept mine at 12F/6R and it rides like OEM without the under steer and no back end wobbling in a hard turn. Planning to crank that up to 24/12 and tweaking with these # in Nov on a road course.
I would suggest a square damping set up to start for the track and then adjust from there. I would go with 18-22 Front and Rear. What else do you have done to your suspension?

Quote:
Originally Posted by Rockin the BlueSS View Post
this surprises me, i figured you would want a stiffer setting in front and a lighter setting in the rear to allow for the weight transfer to get over the rear wheels?

not questioning you just learning...
With an IRS car if you set the rear soft for squat you get a huge camber and toe change; this causes you to have less tire contact patch and more toe-in which doesn't help with traction. When you set the rear up stiff it maintains your camber and toe (you will still get some toe-in) but it keeps more contact patch on the track. The front is set soft so it lifts easier when you're launching promoting the weight transfer.

I also recommend trailing arms/toe-links and sub-frame mounts along with a STIFF rear sway. Please let me know if you have any questions.

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Old 09-16-2011, 01:38 PM   #12
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Quote:
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With an IRS car if you set the rear soft for squat you get a huge camber and toe change; this causes you to have less tire contact patch and more toe-in which doesn't help with traction. When you set the rear up stiff it maintains your camber and toe (you will still get some toe-in) but it keeps more contact patch on the track. The front is set soft so it lifts easier when you're launching promoting the weight transfer.
cool makes sense
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Old 09-17-2011, 10:17 AM   #13
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i have xa's...and 22's...mine is 7 fr 4 back,,,,its very smooth
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Old 09-18-2011, 10:54 PM   #14
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Hey everyone,

I went with 20F/24R today at my first Autox event...

I finished 8th in the novice class out of 24 drivers!

I finished 64th over all out of 83 in the PAX overall.

I think it worked.

here's a vid of my run final run.



I've posted this all over the place tonight. It was a BLAST.

If you have never done an Autox event. DO IT!!!! It was 10x more fun than a drag race.

The suspension, wheels, and tires worked great together. I was very surprised at how well I was able to do. I can't wait for the next one.

Thanks for all who posted info in here.
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Looks: powder coated iom calipers, LED foglights w/ always on harness, custom painted bowties, window tint, smoke tinted tail lights etc, oem gfx w/ custom outlets, painted taillight bezels, all weather trunk mat
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Old 09-19-2011, 09:36 AM   #15
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Quote:
Originally Posted by Li0nel1234 View Post
Hey everyone,

I went with 20F/24R today at my first Autox event...

I finished 8th in the novice class out of 24 drivers!

I finished 64th over all out of 83 in the PAX overall.

I think it worked.

here's a vid of my run final run.



I've posted this all over the place tonight. It was a BLAST.

If you have never done an Autox event. DO IT!!!! It was 10x more fun than a drag race.

The suspension, wheels, and tires worked great together. I was very surprised at how well I was able to do. I can't wait for the next one.

Thanks for all who posted info in here.
Lionel,

Great job at your 1ts Autocross.

Start planning now to attend C5FEST III and participate in the C5F III AC. Rumor has it you get a one second credit for every onion ring you eat on the course
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Old 09-19-2011, 08:23 PM   #16
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Quote:
Originally Posted by Li0nel1234 View Post
Hey everyone,

I went with 20F/24R today at my first Autox event...

I finished 8th in the novice class out of 24 drivers!

I finished 64th over all out of 83 in the PAX overall.

I think it worked.

here's a vid of my run final run.



I've posted this all over the place tonight. It was a BLAST.

If you have never done an Autox event. DO IT!!!! It was 10x more fun than a drag race.

The suspension, wheels, and tires worked great together. I was very surprised at how well I was able to do. I can't wait for the next one.

Thanks for all who posted info in here.
Great Job!
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Old 09-19-2011, 09:05 PM   #17
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Thanks guys!
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Looks: powder coated iom calipers, LED foglights w/ always on harness, custom painted bowties, window tint, smoke tinted tail lights etc, oem gfx w/ custom outlets, painted taillight bezels, all weather trunk mat
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Old 09-20-2011, 09:54 AM   #18
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That is awesome!!! Great Job!

Thank you JDP for the advice and I will definitely try the 20F -24R set up.

So what about tire pressures? less air in front vs rear?

Last event I got 3rd out of 18 but lost to a damn scion! I want to get him this time!
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Old 09-20-2011, 10:13 AM   #19
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Got my BC coilovers installed yesterday. Right now they are set at 12F/6R and I like it. I might try 10/5 just to see what happens.

Of course no track usage yet.
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Old 09-20-2011, 10:17 AM   #20
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Quote:
Originally Posted by Rockin the BlueSS View Post
cool makes sense
No problem!

Quote:
Originally Posted by Li0nel1234 View Post
Hey everyone,

I went with 20F/24R today at my first Autox event...

I finished 8th in the novice class out of 24 drivers!

I finished 64th over all out of 83 in the PAX overall.

I think it worked.

here's a vid of my run final run.



I've posted this all over the place tonight. It was a BLAST.

If you have never done an Autox event. DO IT!!!! It was 10x more fun than a drag race.

The suspension, wheels, and tires worked great together. I was very surprised at how well I was able to do. I can't wait for the next one.

Thanks for all who posted info in here.
Nice!! Congrats!! The car looked very composed. Please feel free to call, email or PM me anytime with questions!

Quote:
Originally Posted by toilets View Post
That is awesome!!! Great Job!

Thank you JDP for the advice and I will definitely try the 20F -24R set up.

So what about tire pressures? less air in front vs rear?

Last event I got 3rd out of 18 but lost to a damn scion! I want to get him this time!
No problem! What sways do you have on the car? There are a lot of variables when it comes to dialing a car in to any given course.

I usually start with a square PSI; 28-30 with stock tires and then adjust from there. I would suggest utilizing your damping adjustments as well as sway adjustments if you have them and use air pressure for ultra fine tuning.

Please feel free to call, email or PM me anytime with questions! Good luck and let us know if you take down the Scion! I had a 2009 Cobalt SS/TC and I broke a lot of hearts with that car!

Kind regards,

Jordan Priestley
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Old 09-20-2011, 10:27 AM   #21
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Sadly still stock sways... I wont be able to get them before Oct 1st but hopefully I can before the final one in Nov.

Those colbalts are quick! what added salt to the wound was the top 3 was seperated by 4 hundreds of a second... Second went to a Porsche with a LS3 motor so I didnt mind that but when the Scion crossed the line and they announced his time, I was like you got to be joking. He was a good driver though.
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Old 09-20-2011, 11:14 AM   #22
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Quote:
Originally Posted by caverman View Post
Got my BC coilovers installed yesterday. Right now they are set at 12F/6R and I like it. I might try 10/5 just to see what happens.

Of course no track usage yet.
That is where I started, I gaurantee you will start playing with the settings. It is addictive.
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Old 09-20-2011, 12:00 PM   #23
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I ran 40 PSI all around, the tires are tall and I was afraid they might rub on the coilovers. I didn't notice too much wear on any of the shoulders so next time I'll run 35 psi all around and see how that feels. I think i will loosen up to 18F/22R because I felt pretty nice and stiff with the 20F/24 rear. I think I can handle a little more give. I'll let you all know how the next one goes. 9 Oct can't get here fast enough. I've been dreaming about eating cones.
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Looks: powder coated iom calipers, LED foglights w/ always on harness, custom painted bowties, window tint, smoke tinted tail lights etc, oem gfx w/ custom outlets, painted taillight bezels, all weather trunk mat
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Old 09-20-2011, 12:13 PM   #24
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CONE KILLER! LOL.
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Old 09-20-2011, 02:38 PM   #25
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I think the lower PSI will help your times a bit, the higher pressure makes it feel a bit better, but doesn't grip quite as well in most cases.
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