C&L upper plenum

[justa4.6]

I bought the new C&L upper plenum and a bigger TB for my '01 GT. Looking to put it on this weekend. I have heard rumblings that without a chip reprogram that the increased air will lean the car out. Is this for real? Do I need to get a dyno tune after I install this thing?

 

[03trubluGT]

You do not have to do anything but bolt it on.

No tuning required. What TB did you go with?

My A/F stayed the same, around 12.5-13:1 during the tests I ran with the Accufab/Dragon/C&L plenums.

Matt

 

[justa4.6]

Thanks for the inf0.

I went with a FR 70mm..... I know it works best w/ a 75mm, but I had to go the used route for $$ reasons, and no one is willing to part w/ a 75mm right now.

 

[navarro98gt]

yea, No tuning required. i just installed mine over the weekend simple install. the only thing i was confused about was that my stock throttle-body had a hole in the plate but my BBK 75mm didnt have the hole? any ideas why?

 

[clarkjr]

I think (not 100% sure though) that the hole is due to the fact that originally that TB was designed for the T-bird and Mustang and the bird actually had a use for it.