Can I put an APR chipped M box ECU into my A4 that had a CH box?

Reply Subscribe

Thread Tools

Search this Thread

12-10-2005, 01:14 PM

#21

Silver Streakin'

Member

Join Date: Oct 2000

Location: PA

Posts: 41,966

Likes: 0

Received 1 Like on 1 Post

as a CH owner, I wouldn't do it.

Reply Like

12-10-2005, 02:44 PM

#22

Yippers®

Member

Join Date: May 2001

Posts: 17,322

Likes: 0

Received 0 Likes on 0 Posts

I'm sorry. I didn't mean to come across as lecturing you.

Reply Like

12-11-2005, 09:52 AM

#23

JPRobertsons

Member

Join Date: Jul 2002

Posts: 887

Likes: 0

Received 0 Likes on 0 Posts

Re: (Jokingly) no offence taken at all. What's the benefit of an LWFW?

Reply Like

12-11-2005, 10:25 AM

#24

Yippers®

Member

Join Date: May 2001

Posts: 17,322

Likes: 0

Received 0 Likes on 0 Posts

Revs rise and fall more quickly. It makes it easier to rev match and the lighter wheel looses less

to inertia. It makes the car slightly quicker. The down side is that you can get some 'rattling' at idle due to the lighter flywheel not averaging the acceleration impulses as much as the heavier OE wheel will and the idle can get a bit lumpier for the same reason. The OE wheel is also a dual mass ... there is an elastic membrane between masses that stretchs as the cylinders accelerate the crank on each fire. This also smoothes the rotation at idle and just off idle. A LWFW should be couple with a sprung hub clutch to help do this same thing.

Reply Like