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BMW 3-Series (E90 E92) Forum
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how to kill this under-steer
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05-28-2013, 12:55 PM | #45 |
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bit the bullet and ordered
powerflex subframe bushings ps2's and yes, booked for a 3 day professional track training. mods i do for this car will stay with the car. what i might learn from those 3 years will stick with me for much longer. mission raceway here i come!!
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JB4 G5 / VRSF IC / STETT CAI / GREDDY / custom exhaust / iRotora cross drilled rotots / snow stage 3 meth / 19" iForged senekas / upgraded speakers n CF woofer box / M3 bits/ DINAN camber plates/ KONI/ megan racing toe arm/ supreme power lowering perch
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05-30-2013, 01:40 AM | #46 |
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i think i found the problem. noticed rear passenger side a lil lower than rear drivers side
applying pressure over the trunk i can squeeze passenger side more. its time for a re-build on the koni yellows i guess. that explains mid corner awkward body weight transfer. 40k kms is rather quick for them to die.
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JB4 G5 / VRSF IC / STETT CAI / GREDDY / custom exhaust / iRotora cross drilled rotots / snow stage 3 meth / 19" iForged senekas / upgraded speakers n CF woofer box / M3 bits/ DINAN camber plates/ KONI/ megan racing toe arm/ supreme power lowering perch
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05-30-2013, 09:18 AM | #49 | |
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Rebuild prob not - lifetime guarantee. Had 10 yr old Koni's leak on my bike....salesman, seeing his commission slip away, swore Koni would prob not make good on such an old install. Koni was as good as gold - new shocks showed up at my door. Hey! I'm sold.... |
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05-30-2013, 01:00 PM | #50 |
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roads up here are smooth as butter. shocks were not used with loweing springs, only zsp sport springs.
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JB4 G5 / VRSF IC / STETT CAI / GREDDY / custom exhaust / iRotora cross drilled rotots / snow stage 3 meth / 19" iForged senekas / upgraded speakers n CF woofer box / M3 bits/ DINAN camber plates/ KONI/ megan racing toe arm/ supreme power lowering perch
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05-30-2013, 01:03 PM | #51 |
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cool. i thot koni recommends rebuild every 40k miles, dont they?
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JB4 G5 / VRSF IC / STETT CAI / GREDDY / custom exhaust / iRotora cross drilled rotots / snow stage 3 meth / 19" iForged senekas / upgraded speakers n CF woofer box / M3 bits/ DINAN camber plates/ KONI/ megan racing toe arm/ supreme power lowering perch
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05-30-2013, 04:01 PM | #53 |
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Lifetime guarantee on Konis? I never knew that. Bilsteins yeah they have lifetime. Konis you should rebuild/refresh every so often and they say so. Maybe their old moto shocks had lifetime?
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09-08-2013, 10:30 AM | #54 | |
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You got absolutely awful advice at first then some others chimed in with much better advice. Still no one ever brought up proper suspension tuning advice such as logging tire temps, adjusting your roll couple distrbution, calculating suspension frequencies, etc, etc. so I was wondering how it all turned out. |
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09-12-2013, 03:01 PM | #55 | ||
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I have since installed new lower shock mounts and ride is super good. car feels very stable, absorbs all road bumps without unsettling the car. I even attended a 3 day performance driving school, and car felt great. I could have benefited with higher spring rates and a LSD but a super smooth dd is my priority and LSD is lil too much money(for me) to justify.
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JB4 G5 / VRSF IC / STETT CAI / GREDDY / custom exhaust / iRotora cross drilled rotots / snow stage 3 meth / 19" iForged senekas / upgraded speakers n CF woofer box / M3 bits/ DINAN camber plates/ KONI/ megan racing toe arm/ supreme power lowering perch
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09-12-2013, 03:01 PM | #56 | ||
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I have since installed new lower shock mounts and ride is super good. car feels very stable, absorbs all road bumps without unsettling the car. I even attended a 3 day performance driving school, and car felt great. I could have benefited with higher spring rates and a LSD but a super smooth dd is my priority and LSD is lil too much money(for me) to justify.
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JB4 G5 / VRSF IC / STETT CAI / GREDDY / custom exhaust / iRotora cross drilled rotots / snow stage 3 meth / 19" iForged senekas / upgraded speakers n CF woofer box / M3 bits/ DINAN camber plates/ KONI/ megan racing toe arm/ supreme power lowering perch
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09-12-2013, 03:01 PM | #57 | ||
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Quote:
I have since installed new lower shock mounts and ride is super good. car feels very stable, absorbs all road bumps without unsettling the car. I even attended a 3 day performance driving school, and car felt great. I could have benefited with higher spring rates and a LSD but a super smooth dd is my priority and LSD is lil too much money(for me) to justify.
__________________
JB4 G5 / VRSF IC / STETT CAI / GREDDY / custom exhaust / iRotora cross drilled rotots / snow stage 3 meth / 19" iForged senekas / upgraded speakers n CF woofer box / M3 bits/ DINAN camber plates/ KONI/ megan racing toe arm/ supreme power lowering perch
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