Since I've already been getting some great info off this site I thought I'd give a little back.

After I got my MCS I started looking at the hot side baffle delete and I was amazed at how expensive a piece of rubber tubing was.... I mean $130 for a piece of tubing is just plain rediculous. Then I ran across just the delete... a piece of PIPE for $60... really!?!?!?

So I pulled mine out, got out the old MIC took measurements and headed up to the local exhaust shop.

A piece of 2" exhaust pipe 8 inches long is a perfect replacement.... and costs less than $4 ( I got mine for free out of their scrap bin) I took it home, painted it black installed it and never looked back.

By using the exhaust pipe there was an 11% increase in volume through that section of pipe.

Just passing this along and I hope it helps someone out.

 

good mod!

 

Not a new idea. Just be sure to use Tbolt clamps and score the area where the tubing slides on. The tube will slip off when oil enters it and when regular clamps expand and contract. I speak from experience.

 

For the uninitiated..."hot side baffle delete"?

Turbo'd engine...factory tube has a baffle in it, replacing this with a section of open tubing, right, to achieve a performance gain of some type?

Just trying to build knowledge, a couple of questions:

a. the engineers had something in mind to put this baffle in place originally, what purpose is it supposed to serve?

b. related to "a", when removed, compared to this original function, the imipact is what, exactly?

c. so with an open tube, the turbo builds boost faster/better, is that the idea? And, more effect at low end or high end?

Again, just trying to gain knowledge. I'm pretty informed on engines generally, but most knowledge was formed back in the day of Holley double-pumpers, Crane cams, and other muscle-car era mods. I get turbo function generally, but I'm trying to understand all the BOV, intake, tubing, ECU, FMIC, and other modern-times mods, so I thought to ask about this one.

 

You really shouldnt "need" the T bolts but they are nice to have. On the last turbo car I built we used regular clamps and silicone couplers and it held 28psi from a GT28rs just fine.... the key is to be sure to get everything super clean before you put it together.

In my case I put it together with the paint slightly tacky so everything should kinda stick to itself.

 

Think of an engine as an air pump and the easier it is go get air in and out the more efficient it will be. The same goes for making horsepower, the less restrictions you have the better the engine will run.

As for tbolts... you really shouldnt need them (not saying there arent a nice touch) as long as you clean the piping and hoses before you put them together you should be fine.... besides I cheated a little I put them together with the paint still a little tacky to ensure they should stay together.

 

In one of their intercooler threads, Helix mentions that the performance increase with the hot side muffler delete is minimal and they don't think it is necessary.

That said, I'm still thinking of doing it when I install my Helix front mount intercooler, it can't hurt!

Thanks for the money saving tip!

Dave

 

It sounds like the old pipe had a restriction in it that decreased volume (I haven't seen it so I'm just going off of what was said above.) If that's the case it was probably put in to decrease the volume of the charge piping, which helps with perceived turbo 'lag'. More volume takes longer to pressurize.

 

From what I understand it was originally put in so drivers wouldn't hear any noise from the air whooshing through the pipes...... but that suckers out now and I still dont hear any difference and its one more restriction gone.

 

Where did 11% come from?????

 

The inner diameter of the replacement pipe is 11-12% larger than the ID of the baffle.