Hey there all you performance modding experts! I have a question regarding the best air intake mod you can do to get the most horses out of my 98 Durango with a 318.

1) Do Tornados do anything like what is advertised for power or performance?

2) Which is better a Ram air kit, Cold air intake kit, or K&N high flow air intake system?

3) If I switched to an Edelbrock intake, would it be beneficial/necessary to install a Throttle body spacer, with a Holley after market throttle body?

4) Should I do a high flow exhaust system before or after modding the air intake system?

Thanks in advance for any suggestions!

 

1. No a tornado will do absolutely nothing for a throttle body. The "funneling air effect" it states just doesn't work with the diameter opening and the spacer aspect of it is nothing more than an expensive paper weight.

I fell prey to believing these things and got a Jet Performance TB 'Tornado' Spacer and used it for about 2 weeks trying to notice a performance boost, but nothing more than a waste of $100.

2. Depends. Typically a Ram air kit will give you the best boost of performance and air mass, but it depends where you're pulling the air from. If it has a nice clean view of what's in front of you then this is what you want to do. I've seen the K&N CAI kit and it's a nice kit yes, but you can save $200 by just making your own CAI kit with a Spectre kit from AutoZone and a DIY 'Home-Brew' Ram air kit. (see the links below)

3. No as I stated above, a throttle body spacer is nothing more than an expensive paper weight. Spacers are only any good on a carburetor, not a throttle body. Also, make sure you get everything you need in order to do the OEM to Holley swap, because the last thing you want to do is wait for a part to come in when you've gotten everything torn down.

4. The high flow exhaust you can do whenever you want to. When doing an exhaust make sure you DON'T mess with the CAT. The CAT comes from factory as 'high-flow' and the engine will not take kindly to a shorter 'high-flow' CAT. Make sure when you're doing your high flow exhaust to beef it up a bit with some 3" piping. This will give you the best performance boost, without killing your fuel economy.

 

Nothing more can be added!!!!! Widow done got it spot on, The verdict is in case dismissed,,,NEXT lol
Other than this is what i use ,,suc`s like a pro lol

 

yup, widow nailed it this time

 

+2 on widow.

 

+3 on widow's response.

The purpose of a spacer is to provide a little more time for the fuel and air to mix more thoroughly. On a fuel injected engine, there is no fuel present at that stage of the game.

So best case scenario is you waste money and it does absolutely nothing. Worst case is you spend money and it actually decreases performance. In no scenario will it provide a benefit.

http://en.wikipedia.org/wiki/Snake_oil

 

What year is your Durango? Mine doesn't have that wicked plastic radiator cover......I had to mod mine with aluminum foil tape for more suction lol. Anyway, Thanks to everyone for all the advise!!! I am going to make some mods over the few weeks and I will post some pictures. Thanks Widow! You really know your stuff about the air intake!

 

Best part of all is it's from past experience so its all legit, tested information I've given rather than a biased opinion. Also his is an '01 with the 5.9 block although his is technically not 5.9 anymore.

Mine has that too so I believe it's 5.9 specific. Check with your dealership parts counter to see if you can't get one that fits it as I'm sure they have one in back.

 

It is a 2001 RT

 

that fan shroud is standard on all the trucks in the second half of the generation (00+) my truck has it too and i have the 4.7