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Tuner
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Posts: 32,844
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Kickdown blocker DIY -
10-24-2012, 05:20 PM
Hey guys,
We've been toying around with making a nice CNC machined kick down blocker for automatic transmissions. Also considered doing an electronic one. But other projects have become a higher priority and this simple DIY works pretty well.
Kickdown blocking is useful for the following:
1) When drag racing it allows you to perform a 2nd gear launch without accidentally downshifting in to 1st gear. Critical for good track times with boosted automatics.
2) When doing dyno testing this will prevent you or your unaware dyno operator from pressing the kick down during a run ruining the run.
3) Some of us prefer to manually downshift when racing and this eliminates the chance of the car downshifting when we don't want it to.
The photo shown is a 135 gas pedal. The 335 pedal is a little different but the same basic procedure should work. 
Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!
It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Junior Member
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Posts: 263
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10-24-2012, 05:37 PM
N i c e !!
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Junior Member
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10-24-2012, 05:47 PM
thanks
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Demigod
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Posts: 1,557
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Car: 2007 335i
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10-24-2012, 05:53 PM
You rock Terry!!
JB4 G5, WEDGE flash, 455 LPFP, HFS-4 meth kit, BMS OCC, VM 6466 ST, RB valve, BMS DCI, 3" AR ***, Custom OC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2 exhaust DEFIV kit, KW clubsort, Delrin solid subfrane bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, MORR VS8.2 rims 245/295
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N54ever
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Posts: 159
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Car: 135i
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10-24-2012, 07:13 PM
It's not every day you stumble across a <$10 DIY that works exactly the way intended, will never fail, and tremendously stealth!
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New Member
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Posts: 23
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Car: 2008 535i
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10-24-2012, 08:14 PM
Will this safely work on a 08 535i ?
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Tuner
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10-24-2012, 08:17 PM
I'll take a few photos on the 335 gas pedal implementation tomorrow. The 535 uses the same pedal as the 335 as far as I know.
Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!
It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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New Member
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Posts: 23
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10-24-2012, 08:20 PM
Thanks!!!
A trip to Home Depot tomorrow. Will be adding this diy, g5, and ww meth install for the weekend to do list.
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10-25-2012, 01:44 AM
Very simple thanks Terry. Hope that the electronic fix also makes it on your list at some stage too!
E89 N54 / Wedge / RB Turbos / AFE DCI / HPF FMIC / Stett CP / Forge DV's / AR Cattless DP's / BMS OCC / RB PCV2 / BMS Spacers
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Tuner
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10-25-2012, 04:57 PM
Added photos of the other two pedal types to the first post.
Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!
It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Demigod
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Posts: 1,557
Join Date: Mar 2012
Car: 2007 335i
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10-25-2012, 05:44 PM
My Home Depot didn't have it ....damn!!
JB4 G5, WEDGE flash, 455 LPFP, HFS-4 meth kit, BMS OCC, VM 6466 ST, RB valve, BMS DCI, 3" AR ***, Custom OC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2 exhaust DEFIV kit, KW clubsort, Delrin solid subfrane bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, MORR VS8.2 rims 245/295
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Tuner
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Posts: 32,844
Join Date: Jan 2008
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10-25-2012, 08:10 PM
Try Lowes. If you still can't find em I'll add them to the site for $3 shipped or something.
Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!
It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Demigod
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Posts: 1,557
Join Date: Mar 2012
Car: 2007 335i
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10-25-2012, 08:24 PM
Quote:
Originally Posted by Terry @ BMS
Try Lowes. If you still can't find em I'll add them to the site for $3 shipped or something.
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lowes has them! 
JB4 G5, WEDGE flash, 455 LPFP, HFS-4 meth kit, BMS OCC, VM 6466 ST, RB valve, BMS DCI, 3" AR ***, Custom OC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2 exhaust DEFIV kit, KW clubsort, Delrin solid subfrane bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, MORR VS8.2 rims 245/295
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New Member
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Posts: 27
Join Date: Jun 2011
Car: 335i 2007
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10-25-2012, 08:50 PM
Quote:
Originally Posted by Terry @ BMS
Try Lowes. If you still can't find em I'll add them to the site for $3 shipped or something.
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Please do it! |
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New Member
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10-26-2012, 06:46 AM
Nice find. I actually have some of those in my garage already.
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New Member
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10-26-2012, 10:01 AM
Quote:
Originally Posted by robc1976
lowes has them! |
+1 my Lowes has them also ! |
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Demigod
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Posts: 1,557
Join Date: Mar 2012
Car: 2007 335i
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10-26-2012, 10:32 AM
Quote:
Originally Posted by I_Want_535i
+1 my Lowes has them also !
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it works flawlessly!! Way better than the washers!
JB4 G5, WEDGE flash, 455 LPFP, HFS-4 meth kit, BMS OCC, VM 6466 ST, RB valve, BMS DCI, 3" AR ***, Custom OC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2 exhaust DEFIV kit, KW clubsort, Delrin solid subfrane bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, MORR VS8.2 rims 245/295
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Junior Member
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Posts: 113
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10-26-2012, 11:00 AM
Is there any situation that you would actually want the kickdown to work?
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N54ever
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Posts: 159
Join Date: Oct 2011
Car: 135i
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10-26-2012, 11:02 AM
Quote:
Originally Posted by stilov
Is there any situation that you would actually want the kickdown to work?
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328i
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Demigod
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Posts: 1,557
Join Date: Mar 2012
Car: 2007 335i
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10-26-2012, 12:30 PM
Quote:
Originally Posted by e90man
328i
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Roflmao!!! 
JB4 G5, WEDGE flash, 455 LPFP, HFS-4 meth kit, BMS OCC, VM 6466 ST, RB valve, BMS DCI, 3" AR ***, Custom OC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2 exhaust DEFIV kit, KW clubsort, Delrin solid subfrane bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, MORR VS8.2 rims 245/295
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Junior Member
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Posts: 113
Join Date: May 2011
Car: 07 335
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10-26-2012, 01:02 PM
ha ha...No I mean like from a higher speed roll, the extra kickdown, could it benefit to get you to right gear?
I guess in others words...what is the drawback to doing this mod?
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Junior Member
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Posts: 165
Join Date: Oct 2011
Car: e92 335i Coupe
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10-26-2012, 01:08 PM
This... is.... AWESOOOOOOOME!!!
JB+RB= 
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Demigod
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Posts: 1,557
Join Date: Mar 2012
Car: 2007 335i
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10-26-2012, 02:25 PM
Quote:
Originally Posted by stilov
ha ha...No I mean like from a higher speed roll, the extra kickdown, could it benefit to get you to right gear?
I guess in others words...what is the drawback to doing this mod?
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no, say you are in 3rd and you slam on the gas...it ill kick own to 2nd and your rpms will shoot up and yiu are out of the powe band and loose power and go to redline in a instant....with the mod it stays in the gear you want.
JB4 G5, WEDGE flash, 455 LPFP, HFS-4 meth kit, BMS OCC, VM 6466 ST, RB valve, BMS DCI, 3" AR ***, Custom OC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2 exhaust DEFIV kit, KW clubsort, Delrin solid subfrane bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, MORR VS8.2 rims 245/295
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Junior Member
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Posts: 100
Join Date: Aug 2011
Car: 335i
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10-26-2012, 04:19 PM
Let's see if we have those gripper bars here in Canada.
Now if we could have something to prevent the god damn car to shift automatically!
JB4 G5 ISO, BMS DCI, 3" AR ***, E85, BMS OCC, BMS Spacers, ECS Blackout Kidney Grille.
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Junior Member
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Posts: 199
Join Date: Aug 2012
Car: 2007 E90 335i A/T
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10-27-2012, 06:44 AM
Quote:
Originally Posted by mathr601
now if we could have something to prevent the god damn car to shift automatically!
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amen!
Slow, stupid and angry...
2007 E90 335i AT, G5 ISO, FSB, BMS flash, RB's, RB PCV, DP's, ER OC's, Injen DCI, BMS OCC, FMIC, ER CP, Tial Q BOV, Walbro 455 LPFP, Snow meth kit injecting E85, runnung on E40-50, Alpina TCU flash, Wavetrac LSD.
Coming: BT FMIC, bigger better water rad.
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