Please, could you elaborate on that more? How is it nicer?

 

In that case, even if the MR housing works, sounds to me like you should also investigate the alternate solution, just to give us customers a choice.

l8r)

 

Any updates ?

 

Updates.

The MR housing, as nice as it looks, performs exactly the same as the TME turbine housing. I can see no difference anywhere in the curve.

We machined the entire top half of the turbine housing off, very cool stuff. Then we put the external gate directly on the wastegate port. I figured this was going to be the absolute ultimate set-up. Did very little. It did perform pretty close to stock but doing it like this still left a pretty large spike in the boost and then no extra gain really up on the top end.

I guess the best bet is just a normal 10.5 housing with the internal gate. Mitsubishi did some homework on these turbos guys.

David Buschur
www.buschurracing.com

 

David speaks no BS. I like it.

 

One thing about us is we are honest. Brutally honest some days, like a punch to the face!

David Buschur
www.buschurracing.com

 

That's some funny **** Dave... Thanks for keeping it real. So it sounds like an external wg off the manifold would not help us here either huh?

 

I'm going to chime in on this and you guys can take it for what its worth. I think that the majority of problems that people are having with these car's not holding boost is because of boost leaks. My EVO will hold 19-20 PSI almost all the way tp 7k and drop MAYBE 1 PSI by then. Every EVO that I have tested for boost leaks with a homeade tester and air compressor has had them. Trust me, there is no way you can just clamp stuff down and just assume that something isn't leaking. Sometimes, just the direction you have the clamp oriented will determine whether it bleeds a little or not.

In addition to my car, I have boost leak tested 2 other EVOs with stock turbos and Buschur stage 2ish mods. Both of the other cars hold boost like this as well now. Also, T bolt clamps are a must because the stock clamps are complete crap.

 

Here's a link to instructions on how to build a cheap tester

http://vfaq.com/mods/ICtester.html

 

ya know, i had a GSx and it had a few boost leaks. The homemade tester works really well. i have yet to check my evo with it (if i can find the thing,lol) You would test the Evo the same way u would a GSX Im assuming no?

 

We are not talking about stock boost levels, we are talking about 24psi+ and holding on cars with aftermarket cams and 7800-8K redline. If you can hold these boost levels with these mods, let's talk... Otherwise you have not added anything beneficial to this thread.

 

Nevermind. I give up with you guys.

 

It was still good information Mike. Don't take things too seriously. I appreciated it.

 

So what is this kick *** solution???

 

David, why don't you try making a video of the wastegate to see what it is actually physically doing. It seems to me the only possible way for it to lose boost was if it was opening.

I know you modified the housing to put an external wastegate on it but that would just duplicate the issue.

I say try different boost controllers on the external setup.

bryan