Engine/Transmission (1994 - 1998) What Air Filter system to get?

[surfbeetle]

I know that there is alot of argument on pros and cons of K&N filters. I don't want to get into that. I currently use a K&N replacement filter in the stock air box which is probably not a good thing. Anyway, since I added the TST #5 plate, my filterminder is sucking down to at least halfway even right after cleaning. I assume this means that I should get a less restrictive air filtration system. I don't want to spend a ton a of $$. Any suggestions?

 

[Twisted Shifter]

Its sucking down quicker because its sucking harder with the TST generating more boost. Dont pay any attention to the filter minder.

 

[Firehunter]

I switched to an AFE filter, go with the stage one or two. they work and look great and you can really hear the turdo spoil up and it will also add a little more power.



STAY AWAY FROM K&N

 

[Vaughn MacKenzie]

What Firehunter said



Another suggestion is the BHAF (big honkin' air filter) which is a paper element allowing considerably more flow than what the stock airbox gives you.

 

[surfbeetle]

Thanks for the info. I will check out the AFE, what's the difference between stage one and two?

 

[Firehunter]

i really don't know, the only thing i due know is that stage two cost almost twice as much.

 

[twopipes]

DItto's Firehunter.

I have the AFE stage II with a metal filter enclosure and "torque tube". I am very happy with it. Sounds great.

 

[Mark Craig]

surfbeetle,



The Stage II's have a larger filter with a 6 inch inlet, the roto molded tube from the filter to the turbo is much larger and also has a 6 inch inlet. The metal powder coated enclosure is larger to house the larger filter and has a lid to stop un wanted noise and to keep cool air instead of hot air getting to the turbo. Be sure you get the Pro Guard 7 as it's is proven to keep the dirt out while still supplying the air, the 4 layer filters just let in a looooot of dirt on a diesel. We ONLY stock the PG7 just becasue of this fact!



Mark @ DPPI

 

[RHARVEY]

Scotty II



It sucks..... cOoooOoooooOOl outside air!



Rick

 

[surfbeetle]

Mark, thanks for the good info. Now I just have to check the budget...

 

[Forrest]

Check out Keiths comments on testing air filters here:



https://www.turbodieselregister.com/forums/showthread.php?t=118118&page=4



Very informative on HP with big time fueling & big turbo.



I had a K&N in the stock box & an HX40. Switched to the BHAF ... wow, what a difference in spool up. Way less restrictive.





Forrest

 

[surfbeetle]

scotty II vs AFE Stage 2

Okay,

so far it looks like its Scotty vs AFE. The Scotty is much cheaper than the AFE stage 2. but you have cut that hole in the cowl. I am not totally opposed to this, but I don't want to do it unless it definitely is a better system. Does anyone have experience with both? Does the scotty flow better than the AFE? From what I can tell, both are cleanable/reusable, is this correct? Also, I am assuming that if I get more air flow than the stock box, the turbo will spool up faster and I would have less smoke on acceleration. Is this true as well? Thanks for everyone's input.

Craig

 

[Deezul1]

Look at the AFE #40044 without the outside housing. There are a bunch of us using this and it works great and is about $50/$60. It really flows good as my smoke was cut down a bunch. If you go with this look at where it rests on the AC line and place a piece of rubber hose over the line to prevent wear.

Piers has them.

 

[surfbeetle]

So then the AFE #40044 would suck in air from the engine compartment? Does anyone have a photo of this setup? If it works just as good and is that cheap, it looks like a good idea to me.

thanks

craig

 

[Neibe]

BHAF is the bomb.

 

[Deezul1]

I had the BHAF before the AFE and the improvement in air flow was very noticable. I installed a remote thermometer probe on the side of my air cleaner as close to the turbo as possible and the temps there compared to ambient temps averaged about 15 deg higher except when pulling a long grade with a trailer. In a racing situation the temps from the turbo didnt rise fast enough to matter as by that time you were already done racing.