2009 CVPI Jmod

[88grandmarq]

Local Georgia CV owner brought his pristine 2009 silver CVPI to me today. He was complaining it had a random, weird 1-2 upshift. He also wanted a Jmod done.

http://i1033.photobucket.com/albums/a414/88grandmarq/2009_Silver_CVPI_Jmod/IMG_0486_zps96aebd15.jpg

I pulled the pan and found the filter had fallen out of the grommet and was laying the pan.
http://i1033.photobucket.com/albums/a414/88grandmarq/2009_Silver_CVPI_Jmod/IMG_0480_zpscd74d43e.jpg
http://i1033.photobucket.com/albums/a414/88grandmarq/2009_Silver_CVPI_Jmod/IMG_0484_zpsf3e9e4e7.jpg

Removed the valve body and gave it good cleaning. Found the Pressure regulator valve, boost valve and OD regulator valve were worn.
http://i1033.photobucket.com/albums/a414/88grandmarq/2009_Silver_CVPI_Jmod/IMG_0485_zpsd26a64bf.jpg

New Sonnax shift valves were installed in the valve body. The factory separator plate was replace with a Superior Tuff plate and drilled for Jmod. I drilled the required holes on the conservative side and NO spring changes were performed.

The end result was perfection... shifts are crisp and consistent with out harshness.

[Seneca]

Very nice! 👍

[RF Overlord]

At least there was no excessive sludge on the magnet, so that's a good sign.

I thought an '09 would already have the upgraded PRV, etc?

[88grandmarq]

At least there was no excessive sludge on the magnet, so that's a good sign.

I thought an '09 would already have the upgraded PRV, etc?

Yeah, the pan and the magnet were spotless

The factory never updated the PRV... the parts I am using are an improved design aftermarket part made by Sonnax.

http://www.sonnax.com/parts/2397 <--- read here