I've read through some old posts but I'm trying to get some good solutions for what venting the WG to atmosphere is supposed to assist with. Boost drop? Boost creep? Spikes?

 

One thing it can help with is keeping condensation in the exhaust from running down the wastegate outlet and into the wastegate. This has been known to freeze in colder climates preventing the wastegate from opening. This causes excess boost when you don't expect it or probably want it.

 

You are correct sir! I can account for it personnaly, I had major overboost issue in the cold. Usually only when it got below 30 degrees or less(freezing temp...go figure).
I have noticed slightly better response but nothing to really brag about or that can be confirmed. It makes some hellacious sounds venting to the atmosphere now.
I'm personally going to put a muffler of some type to make it more stealthy.
I really don't get any boost creep on my set up, I had at some points but that was before I fixed all my little issues with the crancase venting and such.
I think overall, venting to atmosphere is just a better/more consistent way to do it.

 

I have ALWAYS had problems maintaining a constant boost level with my STS setup. I've replaced all my vacuum lines, pumped air into them searching for leaks, running my wg and ebc boost reference points from my engine vacuum vs. the compressor, tried different ebc's, and still have 50% max boost in 1st gear, 80% boost in 2nd gear and max boost in 3rd gear. And in each gear, boost slowly drops.

I was debating dumping my wg externally to see if backpressure is interfering with anything. I have a video of a 90mph run taping my boost gauge. I'm having a hard time with putfile.com so if anybody wants to see it shoot me an email at hemifever@aol.com and I'll forward it to you.

 

Screw that, let's see vids of the Cuda


Hemi hit the nail on the head for flipping the WG as far as I'm concerned -- better performance by reducing the pressure in the turbo's exhaust track.

 

Well I just flipped it over. I have lost the bolts for my "cap" that I made to cover the other wg perch that is exposed. I'll get some bolts then I'll take it out.

As for my Cuda, I found out my 383rwhp and 475rwtq was with blown head gaskets. I have since pulled the heads and put on some Cometic gaskets as well as milled the heads .020. I'll have it back at the dyno soon. I put that 451 stroker in to replace my 500 stroker for more streetability. I don't race anymore, the 500 was putting out 625hp.

 

Yeah, I just flipped mine over too and then cut out the little ppipe that hooked into the exhaust. I'd always planned on going back and making the WG look better, but... eh. Its under the bed

The Cuda sounds like fun! What color?

 

That sounds really strange that you would have different boost in different gears.
Sounds like a tune or transmission thing, like the engine is not really under load all the way, maybe slipping the trans or computer pulling something from the tune, retarding it and reducing load.
I'm just guessing here, I have never had any issue with varying boost with gears selected.
Try manually shifting your trans under part throttle and see what your boost gauge reads then. You don't need full throttle to go full boost, even up a slight grade at part throttle I see full boost.
Just suggestions, I'm no expert but have been experimenting with mine for over a year and have learned some.

 

I had that problem at first, but it was the result of having too big a vacuum line between the boost controller and the WG. The only other thing I could think of that may cause that is having the controller plumbed incorrectly.

Can you lock up your converter Hemi? If so, you can build boost like a madman with light throttles.

 

Shade at STS told me it was to fix boost creep and condensation that some people were having problems with. That is the reason for the new E1 pipe.