Jump to content
TEAM SHELBY FORUM

Anyone Have An 07-09 Gt500 With Offroad Jlt Big Air And Vmp 2.5 Pulley?


Recommended Posts

Recently added a VMP 2.5" pulley with 90mm idler to my existing mods:

 

* JLT Carbon Fiber BIG AIR intake (127mm)

* Offroad X (catless) free flowing exhaust

* NGK TR6 gapped to .032

 

I'm running a 93 Lund Tune that should already be tuned for increased air from the 2.5" pulley (per Lund).

 

My boost went from about 7 pounds to 10-11 pounds. Car pulls fairly well but stumbles on startup and for the first 4-5 minutes of operation.

Is this normal? I was expecting to be in the 13-14psi range with these mods?

Link to comment
Share on other sites

I'm starting to wonder if the stock belt is actually slipping.

Anyone that's done these mods please chime with your OEM boost gauge readings and whether or not you've experienced belt slip with the 2.5" and 90mm idler?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...
...