Yep. The Fastman 52mm for your 5.9 will make a difference. Go to his website and e-mail or call him. Tell him you heard about his tb's on Dodge Forum and he will give you a discount. I think the tb is still $225 when you get the discount. Look at my list of mods in my sig - I am very happy with this setup and the increased performance. The Fastman, Hypertech, and 180 thermostat made the most difference of all.

 

Any idea what you are pushing for hp/torque after all of your mods????. Your SIG shows basically everything i have on my TO DO list....

 

ok i've still been wondering this, does anyone know the size of the stock throttle body? i could go out and measure it but i'm at school and too lazy.

if anyone knows off the top of their head i'd greatly appreciate it.

 

Actually, I'm just trying to drive all the throttle body spacer companies out of business...so I can introduce my own line or TB spacers to compliment my fuel injector spacers 10 horse PER injector [8D] There will even be a kit to add extra injectors to your motor. Got a 6 cylinder? Want the gas mileage of an 8 cylinder? NO PROBLEM! And the gains are tremendous...15 horse per added injector! [8D]

Spacers are definitely useless on multi-port injected motors. They're not of much use on throttle body injected motors either. Carburated engines are the only ones that benefit from them.

And the Tornado...that thing is just plain junk. [>:]

 

man burning rom you make me laugh so hard sometimes...

 

All I have is my "butt dyno" which tells me the mods have made a big difference. If I had to guess - I would say I have picked up 25 Hp or so. Hard to tell real numbers without a real dyno comparison though. Might be more. My highway mileage increased about 1.5 mpg - city about .5 to .8mpg after the mods. It won't roast the tires - but that is due to the "torque limiter program" Dodge put in starting I think with 2000 models to reduce wear on their junk 46re trannies. The mods have greatly reduced the number of times the tranny "kicks down" when encountering a small grade on the highway, and the truck is much "snappier" when applying pedal to it.

 

The stock Dodge Magnum 5.2/5.9 throttle body is dual 50 mm bores and has a measured flow at standard conditions of about 635 cfm @ 1.5 Hg - but this goes down as the stock air intake and filter is in front of it.

F&B are better than most at posting dyno results and not claiming huge gains:

http://www.fbthrottlebodies.com/

you can read all about Chrysler's design of this TB at their patent:

http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1='4,905,647'.WKU.&OS=PN/4,905,647&RS=PN/4,905,647

 

Fastman recommends the 50mm for the 5.9 if you are towing alot. Anyone have any thoughts or experience with this?

 

another thought to add to this is the intake mods... cut the runners down 1", open up the injector bores and clean up the TB opening. your motor will breath really well to 5k rpms...

 

I was just gonna say the same thing Steve. With the extra "room" your giving the motor to breath, I bet it would be an awesome result if you cut the runners down.