So far I have Put in the Stage 1 jet chip ,K&N filter ,throttle body spacer, tornado(ha ha) and dual exhaust.I have been looking for a 70mm TB but cant find one for my truck.Anybody have any luck with undersized pulleys?Looking for horse power and gas mileage

2004 Dakota Quad Cab
V8 Loaded
20k mi

 

the fastman .com has a tb for your truck, also underdrive pulleys are useless unless supercharged. better off going with an electric fan over the stock clutch fan

 

Ditto on the electric fan. I think that is definitely your next horsepower gain opportunity!

 

hey ketco have u had ne luck with that tornado?? everyone keeps sayin its bull but i keep seeing comercials for it and that thing has been around for some time. u'd think if its so full of it it would be off the market by now. so hows ur tornado workin??

 

I dont know. I put in in when i put in the chip/k%n and tb spacer. I would think it does the same as the tb space but what the hell do I know.

 

I ordered the throttle body. what kind of gains can i expect?? Also any ideas on where to get the fan???

 

i did the under drive pulley and while i didn't notice much power i did get a 2MPG increase in fuel economy. also the air conditioner temp is just right now, i used to freeze with it on its lowest setting while cruising down the freeway

 

Underdrive pullies aren't a waste of money - they free up power used by accessories which means the % of power going to your tires increases. Is it a big gain? No. But it all adds up. Tornado + TB spacer are a waste of money on a multi point fuel injection system. Carb and TBI you can see some dramatic gains from the spacer though.

If you get rid of the crank dampner though you will wear the bearings/engine out sooner, but how soon? Who knows. If you don't have the dampner in there you should notice better throttle response.

You keep seeing ads for the Tornado because people keep buying them. People put them in and then test to see if there's an increase in fuel economy, which usually means they drive easier than they did before, which is what causes their gains. You are better off putting a Type-R sticker on for increased power.

 

Where's a good source for the under-drive pulleys? I put some on a Mustang GT once and felt like I got some more HP from it.

 

Underdrive pulley and other stuff www.rpmoutlet.com