Koni Yellows, rear end jumpy on bumps - Page 2 - Ford Mustang Forum
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post #16 of 21 (permalink) Old 08-02-2013 Thread Starter
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Originally Posted by KonaV6 View Post
Like stated above you need all 4 springs to match. I've read great reviews on the JM LCAs. They seem to keep the rear end planted very well.
I would love to reinstall the rear Steeda Sport springs, but i need something to lift the rear about inch because with all 4 Steedas, i have no rake at all, don't like the flat on the ground look and don't like the driving dynamics either as it causes oversteer.

The kicking may be caused by the soft OE LCA not following the Konis and BMR PHB. Some comments here really makes sense and like my friend Pierre told me, suspension is like chemistry ;-)


Canadian 2012 V6, MT, Perf.White Pony Package (3.31 gears). Koni Sport Shocks & Struts. Steeda Sport Springs w/HD Mounts, Route 66 SpeedShop 55D rear spring kit. Boss 302 Strut Tower Brace. BMR Adj PHB. BFG G-Force Sport Comp2. Pioneer TS-D6802R Front SPeakers, Clarion 80W/Ch Amp. JL Audio 8 Inch Sub And 175W Amp. GT500 Steering Wheel. 2012+ Tilting Headrests
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post #17 of 21 (permalink) Old 08-02-2013 Thread Starter
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Quote:
Originally Posted by Fabulozzz View Post
I would love to reinstall the rear Steeda Sport springs, but i need something to lift the rear about inch because with all 4 Steedas, i have no rake at all, don't like the flat on the ground look and don't like the driving dynamics either as it causes oversteer.

The kicking may be caused by the soft OE LCA not following the Konis and BMR PHB. Some comments here really makes sense and like my friend Pierre told me, suspension is like chemistry ;-)
OOPS! i meant to say UNDERSTEER.... not oversteer... must read twice before posting ;-)


Canadian 2012 V6, MT, Perf.White Pony Package (3.31 gears). Koni Sport Shocks & Struts. Steeda Sport Springs w/HD Mounts, Route 66 SpeedShop 55D rear spring kit. Boss 302 Strut Tower Brace. BMR Adj PHB. BFG G-Force Sport Comp2. Pioneer TS-D6802R Front SPeakers, Clarion 80W/Ch Amp. JL Audio 8 Inch Sub And 175W Amp. GT500 Steering Wheel. 2012+ Tilting Headrests
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Quote:
Originally Posted by Fabulozzz View Post
The kicking may be caused by the soft OE LCA not following the Konis and BMR PHB. Some comments here really makes sense and like my friend Pierre told me, suspension is like chemistry ;-)
That's likely. Like I said, my car became a lot more stable after I installed the UPR control arms. And I specifically mean that to include over bumps in turns. It doesn't get upset easily.


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post #19 of 21 (permalink) Old 09-23-2013 Thread Starter
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Update

i swapped out the stock rear springs for Route 66 SpeedShop 55D springs and they nicely match my Koni Yellows (about turn). Car is well balanced and easy to handle on the track, wich tells me they're also a good match for my Steeda Sport front springs. The rear Steeda springs are rated at 175lbs and the R66SS55D are 170lbs with less drop. Rake is nice and looks stock, only a bit lower. Looks nice, drives nice, i like it.

Canadian 2012 V6, MT, Perf.White Pony Package (3.31 gears). Koni Sport Shocks & Struts. Steeda Sport Springs w/HD Mounts, Route 66 SpeedShop 55D rear spring kit. Boss 302 Strut Tower Brace. BMR Adj PHB. BFG G-Force Sport Comp2. Pioneer TS-D6802R Front SPeakers, Clarion 80W/Ch Amp. JL Audio 8 Inch Sub And 175W Amp. GT500 Steering Wheel. 2012+ Tilting Headrests
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Under and over steer are controlled with the sway bars. The Eibach adjustables or the Strano adjustables are an awesome way to dial in the car. Changing the setting completely changes the personality of the car.
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post #21 of 21 (permalink) Old 09-24-2013 Thread Starter
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Originally Posted by popeye010 View Post
Under and over steer are controlled with the sway bars. The Eibach adjustables or the Strano adjustables are an awesome way to dial in the car. Changing the setting completely changes the personality of the car.
The balance was off with the Steeda rear springs, i had zero rake and front end was pushing. Balance was better with the stock springs, but a bit too much rake. The 55D spring kit fits nicely in my setup.

I will be shopping for sway bars next spring. There is a nice set of adjustable Eibachs on sale at AM, but i have already busted my Mustang budget for this year. Car is also going in the garage for the winter first week of november, so no more mods at this time. I will be looking at Steeda swaybars

Canadian 2012 V6, MT, Perf.White Pony Package (3.31 gears). Koni Sport Shocks & Struts. Steeda Sport Springs w/HD Mounts, Route 66 SpeedShop 55D rear spring kit. Boss 302 Strut Tower Brace. BMR Adj PHB. BFG G-Force Sport Comp2. Pioneer TS-D6802R Front SPeakers, Clarion 80W/Ch Amp. JL Audio 8 Inch Sub And 175W Amp. GT500 Steering Wheel. 2012+ Tilting Headrests
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