[jt2007]

hey whats up,
i own a 2004 mustang w the 3.9L engine.
when i bought it, right away i put magnaflow cat-back dual exhaust on it.
I recently installed a new 65mm BBK throttle body and a bbk cold air intake. What mods should i do next? I have been debating on a 42% reduction pulley kit, or a H or X pipe eventually adding headers. thanks for the help

[99mustang232]

asp pulley, xcal2 w/tune, gears + tlock, long tubes, cam...

[jt2007]

My car is an auto, should i get the 4.10 gears for it?

[99mustang232]

i would, you will need the xcal2 or a computer reflash from ford or your local tuning shop to correct for the gear change

[jt2007]

and for headers? Mac long tubes? BBK shorties? and other recommendations?

[99mustang232]

if you don't live in the land of strict exhaust laws, go MAC longtubes

[jt2007]

is a pulley kit hard to install yourself, or would you recommend having someone do it?

[99mustang232]

also here is a list of v6 performance resellers/mfg's

http://www.moddedmustangs.com/forums...st-vt3770.html

[99mustang232]

Originally Posted by jt2007 is a pulley kit hard to install yourself, or would you recommend having someone do it?

you can do it yourself in your driveway with basic hand tools

[jt2007]

right now my car has 3.27 gears, w traction control, and it seems when i turn sometimes a hard knocking comes from the right rear axle area. any idea what that is?

[jt2007]

and also w/ the asp pulleys, does that come w a harmonic balancer? i have looked at motoblue pulleys as well, and you get a harmonic balancer w it

[99mustang232]

is it a ryhmic or repetitive knock, or does it come and go only when cornering? i would pull the tire and inspect the brakes

[jt2007]

its pretty quick, and it just happens when cornering

[99mustang232]

Originally Posted by jt2007 and also w/ the asp pulleys, does that come w a harmonic balancer? i have looked at motoblue pulleys as well, and you get a harmonic balancer w it

the asp comes with the balancer, the harmonic blancers are different between the v6 years the earlier models were externally balanced motors and the later models are internally balanced.

1999 - 2003 3.8L FORD MUSTANG Auto Specialties recommends these pulleys be installed by a qualified mechanic. You are receiving two parts, but removing one. A new balancer pulley and underdrive pulley. 1. Remove water bottle and fan. 2. Remove crank bolt. 3. Remove belt. 4. Use pulley puller (harmonic balancer puller) to remove crank. 5. Place grease on outside and inside of new balancer snout. 6. Install new balancer without the new pulley. Use balancer to push new balancer on. 7. Apply Loctite Thred Lock #242 or equivalent to threads on bolt. Tighten to 80ft. lbs. 8. Apply Loctite Thread Lock #242 or equivalent to 8mm bolts to hold on new crank pulley that will attach to the harmonic balancer. 9. Bolt to harmonic balancer, torque to 45 ft./lbs. or hand tight. 10. Reinstall fan, water bottle and install new Gates belt K060966. 11. Inspect belt to make sure it is properly seated in all pulley grooves. Turn on vehicle and check to make sure pulley installation does not wobble. When removing the stock harmonic balancer and putting on the new harmonic balancer, look to see if the new hamonic balancer matches the stock harmonic balancer. Some of the 99-00 3.8 have the balancer for the 2001 on them and vice versa. If you find that the new harmonic balancer does not match the stock balancer you will have to get it exchanged for the correct one. 99-00 3.8 Mustang Balancer 2001 3.8 Mustang Balancer

[jt2007]

would you recommend the asp 25% reduction, or the motoblue 42% reduction?

[99mustang232]

personally i would go with the ASP pulley, here is some more information and a dyno sheet from one of our forum authorized vendors "VMP Tuning". Also another authroized vendor "Stripper Motorsports" is having an ASP pulley sale!

[jt2007]

where are those asp pulleys on the stripper motorsports site? i cant find them

[jt2007]

nm i pulled my head out and used the link

[99mustang232]

they are not on their site, this is a promotion for the board members only, you can request pricing here

[jt2007]

thanks for all the help man