The reason I asked is because the A/F ratio normally leans out too much when an aftermarket air intake and an offroad H pipe are both used with the stock tune on the new Mustang GT's.

 

So i have heard thats why i was suprised when the guy told me it was right on the money!!

 

Can't argue with the printout data.

 

I think it's funny that people think 346ci is a big motor. Go back to the 70's and say that....

 

youd have been smacked had u said that then.

 

i couldn turn my car on with my JLT intake without some form of tune. even with the canned 91oct tune n my tuner it went into limp mode about a block from the house so i waited til i was at th edyno shop to actually install it.

 

That is something I don't really care for on the new 3V's. You have to have it tuned in order to turn the A/C on. You'd think everytime you changed something simple like a CAI. The computer would work it out itself. Thats got to get old modding one of those. You're better off buying all the mods at once, and having it tuned after the install.

 

if by "tuned" you mean a dyno tune, then yes, that would be the most effective course of action. most bolt-ons can be adjusted for automatically with a simple plug-n-play tune that comes with your handheld tuner or is bought for 50bucks or so from some tuner shop online (bamachips, brenspeed, evo, etc)

 

Why does everyone have problems when they install the JLT Intake? You had a hand held, and it still went into limp mode?

 

From my experience with my car, the only thing that really needs to be tuned is internal motor stuff....in my case, a .609 lift cam. The rest of the stuff was untuned and the car adjusted for it. I'd imagine the technology in the new 3V's should be sufficient w/o a handheld. I didn't even get tuned for nitrous....and it ran a perfect a/f on the dyno.