Early 99 and ATS ported housing

[400kStroker]

Why won't these work on the early 99? I've seen many comments that they wont but cant find anything on why. What would have to be done to make it work? I'm pretty sure I have a little surge issue going on. see...
Up Pipe leak? Surge? Converter?

[dentexpowerstroke]

I'm pretty sure the bolt patern isn't the same. You already have the wicked wheel being that the truck is an e99. That usually helps with surge but it's hard to say if you are actually having surge without a video.

[400kStroker]

I mentioned in that other thread of my actual problem that actually, this truck does not have a wicked wheel. A few years ago the turbo cartridge? bearing assy or what have you was replaced, and I'm sure at that point the wicked wheel was replaced by a standard wheel. I did not know much then, but I'm 100% sure that is the case know. I wish I could do a video, but as much as Ive tried I cannot get one of the quality required.

Besides a wicked wheel, what other reasons are there that early 99's and older do not seem to have the surge issue? Maybe it's something else that's been done. I'm pretty much assuming now that it is surge. I've done a lot of trial testing and testing for boost leaks, belt pullys, etc. and the timing of the noise is just yelling surge to me.

[dentexpowerstroke]

Surge usually doesn't happen at a shift, flutter does but they are 2 different things.

[400kStroker]

What would you describe as flutter then?

[dentexpowerstroke]

Sounds like the turbo sputters when it shifts.

[HVAC SuperTech]

The late 99 and up turbos are larger and have a larger comp housing and outlet. And they also have 5 bolts holding it together. The e99 turbos only have 4 bolts and they are smaller.

[400kStroker]

God damn early 99 bull****

[HVAC SuperTech]

Ats housings are supposed to stop surge. But Ats housing's aren't what they are cracked up to be, I haven't heard all that great things about them.

Just up grade to a d66 turbo and you will be happy. I am happy with mine. I have no surge from mine. What does your comp wheel look like? Good condition?

[400kStroker]

Yes, the compressor wheel is still in very good shape, but like i said, it is a standard (late99+) wheel, not the wicked/x wheel that it should be. Could this be some of the issues with the smaller turbo and smaller intake runners? Ive done much research on the D66, what is it about them that eleminates surge?

I dont if this is a problem ive always had. Just recently this spring i opened it up with the 6637 and chipped it with a tw, but i did notice it some before the chip.