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-   -   Ordered Quaife today (http://www.bimmerfest.com/forums/showthread.php?t=663691)

ChasR 12-12-2012 11:12 AM

Ordered Quaife today
 
I finally got tired of DSC interrupting my spirited accelerations and ordered a Quaife from VAC motorsports. THe one on my old race car was/is fantastic, so I'm looking forward putting the d's power to the ground with a real TBD. Next up is Evolve ECU reprogramming. I'm waiting on that due to the BMW recall to reprogram the ECU. No point getting it and having it wiped almost immediately.

62Lincoln 12-12-2012 11:29 AM

PLEASE keep us posted on your progress! This will be an interesting read, for sure! :)

BMWTurboDzl 12-12-2012 12:58 PM

Quote:

Originally Posted by ChasR (Post 7245496)
I finally got tired of DSC interrupting my spirited accelerations and ordered a Quaife from VAC motorsports. THe one on my old race car was/is fantastic, so I'm looking forward putting the d's power to the ground with a real TBD. Next up is Evolve ECU reprogramming. I'm waiting on that due to the BMW recall to reprogram the ECU. No point getting it and having it wiped almost immediately.

Who will do your install?

Axel61 12-12-2012 01:58 PM

Now that is some COJONES my friend. Another ****** in the crowd like a FEW of us to make changes w/o worrying about the wartanty, keep us posted ok

Sent from my SPH-L710 using Bimmer App

ChasR 12-12-2012 02:14 PM

I have the ability to change it myself, a shop, a lift and the tools, but I also have a friend in the indy BMW repair business that I trade computer work for car work. I'll have to figure out which way I go. Warranty expired today, BTW. I've swapped the chunk on a e28 and an e46 and it wasn't too difficult.

GreekboyD 12-12-2012 03:23 PM

Awesome stuff. I'm looking to get mine in the spring.

Axel61 12-13-2012 06:20 AM

Bravo ZULU amigo ChasR go for it

bimmerdiesel 12-13-2012 07:01 AM

Quote:

Originally Posted by ChasR (Post 7245919)
I trade computer work for car work.

Jealous. Thats not fare deal. I wish I had friends like that. I help so many people with computer work but in return I cant expect anyone with Car work coz I help them in that too with little I know :(

Axel61 12-13-2012 08:06 AM

@bimmerdiesel C'est la vie mon ami

cssnms 12-13-2012 10:01 AM

Quote:

Originally Posted by 62Lincoln (Post 7245531)
PLEASE keep us posted on your progress! This will be an interesting read, for sure! :)

x2. I've been flirting with VAC over the last year about doing the very same thing.

DZLMAN 12-14-2012 07:23 AM

I'd be interested in doing the same come spring time. Please keep us posted.

ChasR 12-28-2012 06:40 AM

Quaife TBD shipped today.

CrazyINP 12-29-2012 11:01 AM

Damn... I want that too. I said I will not add any mods to my d till I get LSD. I will talk to VAC again and plan trip to PA for install.

62Lincoln 12-29-2012 12:52 PM

Quote:

Originally Posted by ChasR (Post 7275102)
Quaife TBD shipped today.

Did you decide on DIY or your buddy?

HIREN 01-02-2013 06:50 PM

Let us know how it performs.

ChasR 01-03-2013 12:33 PM

Took it to the shop today. Hopefully it will be back tomorrow.

ChasR 01-08-2013 06:29 AM

Car is back. Quaife works quite well. I can pull out in front of folks without DSC killing the engine. It seems DSC will allow a little wheelspin as long as both are spinning. I haven't tried it with DTC, but can't imagine it would be an different. THe car has a lot more traction in DSC mode in any event.

HIREN 01-08-2013 09:15 AM

You should take it out to the track next!
What was the total bill if you don't mind sharing?

ChasR 01-08-2013 03:00 PM

$338 to install + the cost from VAC, $2575 + shipping

julesandtrish 01-08-2013 06:29 PM

Quote:

Originally Posted by ChasR (Post 7299114)
$338 to install + the cost from VAC, $2575 + shipping

Come on tax refund.........:angel:

ChasR 01-10-2013 07:45 AM

SHipping BTW was $98 from VAC (UPS) and $68 (FedEx) to ship the core back.

Here's my seat of the pants take on how the Quaife improves the driving experience.

On dry pavement with DSC fully on, ANY wheelspin led to an abrupt cut of engine power. I believe this is because in DSC the brakes aren't used to create a pseudo LSD. I can't prove this and can't find it in the literature. With the quaife it is harder to spin a wheel, so DSC throttle intervention is raised. It will still happen if you light the tires up. DSC allows some wheelspin as long as both rear tires are spinning at the same speed and aren't spinning much faster than the fronts. THis is why I believe the LSD function of DTC is off in DSC.

I still haven't driven the car in DTC mode, primarily because there isn't a need to. Before the quaife, if I was going to accelerate hard, I enabled DTC to avoid DSC throttle intervention.

HIREN 01-10-2013 08:33 AM

Thanks for your input ChasR, it is greatly appreciated.
It seems like BMW should have put this thing on from the factory! I could see not in the 335i if they didn't want to steal M sales, but the d seems to really need this even with my 265 wide rear tires. I can't imagine how bad traction is on the non sports with 225s!

BMWTurboDzl 01-10-2013 09:59 AM

Quote:

Originally Posted by HIREN (Post 7303284)
Thanks....
I can't imagine how bad traction is on the non sports with 225s!

It's fine actually ...

Sent from my MB525 using Bimmer App

HIREN 01-10-2013 10:13 AM

I guess it depends on your right foot!
I've noticed sometimes when I get on it to pass someone the car nearly goes sideways with DSC intervening to correct and this is at 40+mph.

335dFan 01-16-2013 05:24 AM

Quaife LSD
 
I am planning to have the Quaife LSD installed by VAC as soon as I can contact them and schedule. At the same time I will have them install M3 Rear Subframe Bushings and M3 Rear Sway Bar. Still considering the H&E Rear Sway instead, but kinda want to stick with mostly BMW parts.


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