Ok guys father in law has an early 99 f250 4x4 has a bale bed on it and 250 k had the transmission redone 3 years ago and guy told him his turbo was weak... he told me his truck has no power .... it dont smoke white smoke or any other issues .... well other than he told me it likes to suck the stock air filter in.... told him we need a 6637 wix on it for that.... never heard of one doing it..... any advice or tips on air filter and loss of power being turbo related would be awsom.... also for turbo replacement with it being an e 99 will thay cause problems..... thanks guys

 

It's not hard to check the turbo. Yank the intake tubes off down to the turbo and reach in and wiggle, push, and pull on the fan, it's right there. The word is that a hair of in and out is not a problem but any slop up and down is. If it's sucking the filter in that tells me it's working fine, it is supposed to suck more air in and push it into the engine.

 

He probably should get rid of that stock air box. Do as walleye says and check the blades of the turbo, up and down movement, and end play.

 

Yeah I picked him up a 6637 today to put on it.... and going to check the turbo this weekend.... if it is shot whats agood one to go back with ? Being an early 99

 

Rebuild kits are cheap and easy to install, I wouldn't go any other route as long as the wheels are in good shape.

 

As Walleye Hunter has stated, the best route to go is to rebuild the stock one if possible.

If not, the next least expensive route is to find a rebuildable e99 turbo in a salvage yard.

Next, these guys are working on a e99 compatible replacement that will peform closer to a 38R than stock:

Home page

I have heard good things about their current turbos.

The next big question is how are the up pipes on the truck at the exhaust manifolds and the collector behind the turbo?

 

I'm sure his up pipes are leaking. Hows he like the noise in that filter set up. I wouldn't think he would. I go for rebuilding his stock turbo, it's easy and the kits are cheap enough.

 

It would be a miracle if they aren't leaking and that begs the question: What to do if they are?

I agree, the 6637 was too LOUD for me just riding around. Towing with one for 6-8 hours wears me and my ears out or add some mountains and it was pure misery unless I wore ear plugs which I am not fond of doing.