APR Splitter Installed. Post your Pictures...

l4zy · 04-15-2011, 02:58 AM

Here is mine!

Shipkiller · 04-15-2011, 07:07 AM

Quote:

Originally Posted by PKumarM3

other than looks this doesn't add much as there is a space between bumper and splitter

i was considering one for my m3, but it was just show, not much go

looks nice on ur car.

You would be wrong...

jmillet · 04-22-2011, 01:11 PM

Yesterday I coached at a PCA DE at Pacific Raceway in a Z4MC outfitted with an APR slitter and wing.
By the end of the day we had the rear wing set at six degrees for optimal rear downforce without adversely impacting front downforce. Car felt very planted at 140 MPH down the front straight and the braking was very stable going into turn 2.
At track speeds over 60 or 70 MPH these aerodynamic aids are more than cosmetic if adjusted properly.

Shipkiller · 04-22-2011, 01:26 PM

Quote:

Originally Posted by jmillet

Yesterday I coached at a PCA DE at Pacific Raceway in a Z4MC outfitted with an APR slitter and wing.
By the end of the day we had the rear wing set at six degrees for optimal rear downforce without adversely impacting front downforce. Car felt very planted at 140 MPH down the front straight and the braking was very stable going into turn 2.
At track speeds over 60 or 70 MPH these aerodynamic aids are more than cosmetic if adjusted properly.

Now that I have had it on the track with a zero angle of attack and understand how the car feels, I plan on adjusting it by one or two degrees at my next track event in May. Small increments. Like you said, I don't want to overpower the rear end since I don't have a wing.

sadar · 11-16-2012, 06:46 AM

Why does this APR splitter look different to others posted ? can you buy this splitter or is it modified ?

http://www.mfestforum.com/forum/showthread.php?t=8979

dubsesd · 11-16-2012, 06:56 AM

That's an eBay splitter that is not longe for sale.

TexasZed4MC · 11-16-2012, 06:36 PM

I will order one today, if it will greatly reduce the understeer on the car at the track. I know it all depends on the angle and lenght of the splitter, but any help and advise would be great.

Finnegan · 11-16-2012, 06:49 PM

Quote:

Originally Posted by TexasZed4MC

I will order one today, if it will greatly reduce the understeer on the car at the track. I know it all depends on the angle and lenght of the splitter, but any help and advise would be great.

Interested as well in adjustment/tuning input.

Gt4 · 11-16-2012, 07:00 PM

It won't reduce understeer at low/mid speed.

Check for an alignment, tires/rims sizes, tires pressure differential front/rear and front adjustble swaybar.

inTgr8r · 11-16-2012, 07:19 PM

Quote:

Originally Posted by Finnegan

Interested as well in adjustment/tuning input.

Have you not installed yours yet Ron?

TexasZed4MC · 11-16-2012, 08:10 PM

Thanks GTfour, thats more along the lines of what TC Kline told me also. I am in the process of ordering 18x9.5 et35 fronts with 255/35/18's and 18x10 et22 and 275/35/18 rears. Also camber plates, maybe coilovers......sorry off the topic of the splitter..

Gt4 · 11-17-2012, 09:21 AM

Quote:

Originally Posted by TexasZed4MC

Thanks GTfour, thats more along the lines of what TC Kline told me also. I am in the process of ordering 18x9.5 et35 fronts with 255/35/18's and 18x10 et22 and 275/35/18 rears. Also camber plates, maybe coilovers......sorry off the topic of the splitter..

I think you should get 255/40r18 to go with 275/35r18

Rated M Roadster · 11-17-2012, 11:28 AM

Quote:

Originally Posted by Gtfour

Quote:

Originally Posted by TexasZed4MC

Thanks GTfour, thats more along the lines of what TC Kline told me also. I am in the process of ordering 18x9.5 et35 fronts with 255/35/18's and 18x10 et22 and 275/35/18 rears. Also camber plates, maybe coilovers......sorry off the topic of the splitter..

I think you should get 255/40r18 to go with 275/35r18

Either 35 or 40 is fine. 40s will rub way more...

Finnegan · 11-17-2012, 12:43 PM

Quote:

Originally Posted by inTgr8r

Have you not installed yours yet Ron?

Started this a couple of times--pulled all the hardware, and patented Intgr8 integrator pieces together, but got sidetracked on other car projects. It's all pulled together in one section of the garage ready to go! Thing is, between caring for parents and other "life stuff" like work I pretty much ended up using time for basic maintenance, pad swaps, etc. for the few track days we could squeeze in. Two track rats make for more basic maintenance!

I've got some time off around the holidays this year for a change, a heater for the garage, and lots of things to wrap up (splitter, and ssk/headers/cats on both cars).

Kgolf31 · 11-17-2012, 01:12 PM

Interesting on the additional downforce. Might be a mod to do later in the next couple of years.

If you dial camber out, shove enough tire in the front and with correct toe you'll be fine with understeer

SmartBastard · 11-19-2012, 07:39 AM

How is everyone happy with those splitters? I guess it doesn't make much difference w/o sealed underbody and a functional diffuser or?

inTgr8r · 11-19-2012, 07:49 AM

extremely happy with it.
its tough as nails & with center gap closed off, it works great.

...just realized that I hadn't posted a pic in this thread.

avsbmw · 11-19-2012, 09:44 AM

Quote:

Originally Posted by inTgr8r

extremely happy with it.
its tough as nails & with center gap closed off, it works great.

...just realized that I hadn't posted a pic in this thread.

How did you close off the center gap?

inTgr8r · 11-19-2012, 09:55 AM

Quote:

Originally Posted by avsbmw

How did you close off the center gap?

APR DIY thread.
http://www.zpost.com/forums/showthre...ght=apr&page=3

....fangs fill starts about post #83

SmartBastard · 11-19-2012, 10:30 AM

Quote:

Originally Posted by inTgr8r

extremely happy with it.
its tough as nails & with center gap closed off, it works great.

...just realized that I hadn't posted a pic in this thread.

That looks actually very good!

seank · 11-19-2012, 08:16 PM

Quote:

Originally Posted by Finnegan

Interested as well in adjustment/tuning input.

It has been said by reliable sources that a splitter starts working above 80mph. I have found it to be true, but have not tested in a simulator. The faster you drive around the corner (sometimes more gonads needed), the more it works.

Ron, they have an affect of 1.5mph around turn 2 at t-hill alone in the track car. A little adds up to a lot.

As another stated, they are worthless at slower speeds.

Finnegan · 11-19-2012, 09:22 PM

Quote:

Originally Posted by seank

It has been said by reliable sources that a splitter starts working above 80mph. I have found it to be true, but have not tested in a simulator. The faster you drive around the corner (sometimes more gonads needed), the more it works.

Ron, they have an affect of 1.5mph around turn 2 at t-hill alone in the track car. A little adds up to a lot.

As another stated, they are worthless at slower speeds.

Thanks Sean. I was thinking there or 8, but I think I can get a lot more out of 8 with a better line (like we discussed).

04-15-2011, 02:58 AM	#67
l4zy Captain 42 Rep 881 Posts Drives: 95 M3, 15 i3, 17 M3 Frz Wht Join Date: Jan 2007 Location: Chino, CA iTrader: (11) Garage List 2017 BMW M3 [0.00] 2015 BMW i3 REX [0.00] 1995 BMW M3 [10.00] 2013 BMW X3 xDrive35i [7.00]	Here is mine! __________________ BMW CCA ///Member #440690
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04-22-2011, 01:11 PM	#69
jmillet Captain 64 Rep 666 Posts Drives: 2023 Hyundai IONIQ 6 SEL AWD Join Date: Aug 2007 Location: Seattle, WA iTrader: (1) Garage List 2023 HYUNDAI IONIQ 6 [0.00]	Yesterday I coached at a PCA DE at Pacific Raceway in a Z4MC outfitted with an APR slitter and wing. By the end of the day we had the rear wing set at six degrees for optimal rear downforce without adversely impacting front downforce. Car felt very planted at 140 MPH down the front straight and the braking was very stable going into turn 2. At track speeds over 60 or 70 MPH these aerodynamic aids are more than cosmetic if adjusted properly. __________________ Jim Millet 2023 Hyundai IONIQ 6 SEL AWD Ultimate Red SOLD: 2007 BMW Z4 M Coupe Imola Red
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11-16-2012, 06:46 AM	#71
sadar New Member 2 Rep 10 Posts Drives: Z4M roadster Join Date: Jun 2012 Location: On Track iTrader: (0)	Why does this APR splitter look different to others posted ? can you buy this splitter or is it modified ? http://www.mfestforum.com/forum/showthread.php?t=8979 __________________ 2007 Z4Mcoupe - track car.
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11-16-2012, 06:56 AM	#72
dubsesd #dubspec 6336 Rep 5,201 Posts Drives: G05 X5/ 2016 F80 M3 INDVL Join Date: Jul 2011 Location: Ottawa iTrader: (2)	That's an eBay splitter that is not longe for sale. __________________ LCI ///F80 M3 Individual Atlantis Metallic / Black Full / Carbon Cermics / 6MT MPE / M Performance & Carbon package / KW v3 / 20" HRE R101LW / 20" HRE 527s / Michelin PSS / 20% tint / 3d Design / Streckenn splitters / OEM GTS hood / EAS Carbon seatbacks / Carbon RKP sideskirt / Bootmod3 / M Performance Tri color alcantara / AWE S Flow instagram: @ dubsesd
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11-16-2012, 06:36 PM	#73
TexasZed4MC Captain 149 Rep 688 Posts Drives: 2006 Interlagos Z4 M Coupe Join Date: Oct 2011 Location: Texas iTrader: (1)	I will order one today, if it will greatly reduce the understeer on the car at the track. I know it all depends on the angle and lenght of the splitter, but any help and advise would be great. __________________ Lone Star Chapter BMWCCA HPDE Event Chair, Texas Trifecta Event Chair, & BMWCCA driving Instructor
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11-16-2012, 07:00 PM	#75
Gt4 Captain 54 Rep 879 Posts Drives: 2006 E46 M3 Estoril blue 6mt Join Date: Jan 2012 Location: Montreal iTrader: (5)	It won't reduce understeer at low/mid speed. Check for an alignment, tires/rims sizes, tires pressure differential front/rear and front adjustble swaybar.
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11-16-2012, 08:10 PM	#77
TexasZed4MC Captain 149 Rep 688 Posts Drives: 2006 Interlagos Z4 M Coupe Join Date: Oct 2011 Location: Texas iTrader: (1)	Thanks GTfour, thats more along the lines of what TC Kline told me also. I am in the process of ordering 18x9.5 et35 fronts with 255/35/18's and 18x10 et22 and 275/35/18 rears. Also camber plates, maybe coilovers......sorry off the topic of the splitter.. __________________ Lone Star Chapter BMWCCA HPDE Event Chair, Texas Trifecta Event Chair, & BMWCCA driving Instructor
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11-17-2012, 01:12 PM	#81
Kgolf31 Brigadier General 460 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	Interesting on the additional downforce. Might be a mod to do later in the next couple of years. If you dial camber out, shove enough tire in the front and with correct toe you'll be fine with understeer
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11-19-2012, 07:39 AM	#82
SmartBastard Stupid as shit 26 Rep 367 Posts Drives: '08 M Coupe Join Date: Jan 2011 Location: Vienna, Austria iTrader: (0)	How is everyone happy with those splitters? I guess it doesn't make much difference w/o sealed underbody and a functional diffuser or?
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11-19-2012, 07:49 AM	#83
inTgr8r Lieutenant General 2432 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	extremely happy with it. its tough as nails & with center gap closed off, it works great. ...just realized that I hadn't posted a pic in this thread. __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold) Last edited by inTgr8r; 11-19-2012 at 08:13 AM..
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