Im stating untuned IX's dont make 20-30whp with a cat back only - you mentioned you got 20-30 from such a setup.

Of course I could be wrong and would like to see a dyno and know whos exhaust!

 

I for one think is a little dangerous to run an MBC, because your bypassing the safety measure of the ECU.

 

Lowbdgt, come on man, those are basic acronyms for the simplest of mods on the Evo. You need to at least do SOME searching instead of asking us to spoonfeed you everything. MBC/EBC stands for Manual/Electronic Boost Controller.

No, djscoto, an EBC is not "safer" in and of itself, but it does retain use of the stock boost control solenoid, which means the ECU is still in the loop. This may allow the ECU to back off boost in an emergency situation, but I'm not sure how that works, since the EBC is controlling the boost.

 

MBC is also a dealer alert mod, just gives them one more excuse to moan about your car if they catch it under the hood if thats a potention problem area for you.

 

Putting an MBC on an EVO 9 is like driving a 911 with spare tires up front. Yep, it can be done. And yep, it will work. But it's not as safe as using the factory boost control system as it completely bypasses all the boost control safety strategies which are integrated into the factory ECU. Not only does it eliminate the ability of the ECU to drop boost if conditions go south, it also eliminates the MAF based closed loop logic which ensures that max engine load is reasonably constant despite big changes in ambient conditions. If that's okay with you, rock on with your $40 ball and spring MBC on your $30,000 investment

-shiv

 

I apologize for that, thats why i couldnt find what it was because they were just acronyms.

 

Good info Shiv. So you're suggesting EBC's are better/safer? I never knew this coming from the SRT world (MAP sensor), thinking they both did the same thing, just one was more show friendly. So they do have a actual "meaningful" purpose besides raising boost in a fancier way.

 

Hiya-- Aftermarket EBCs can be a better option than a simple el cheapo MBC but not by much. They still either target a desired manifold pressure which is not as useful as targeting a desired MAF consumption rate. Nor do they offer any low boost fail safe modes that can be triggered in case of something going wrong. In these instances, the factory ECU (appropriately remapped) is the best solution for control boost. We even rely on it when controlling big Garret turbos.

Shiv

 

Some of the packages offer the best bang for the buck. But since your local, just stop by works, vishnu, gruppe-s. All the tuners are good its just a matter of preference. With the tune at works I did not have to worry about MBC/EBC because their flashes offer 20psi to readline with no taper and it does not bypass the ECU. The Flash is expensive 599 but its well worth it.

 

Ohhh I see now. I was a little confused. So the best way to raise boost would basically be through a reflash then right? Thanks for clearing that up.

 

Evo637, the boost always tapers unless your max boost is no higher than the taper point...it's just a natural thing that the stock turbo does, since it can't sustain certain boost levels at high rpm. People always make "holds XX psi to redline," but they've never logged their boost with a MAP sensor to see that it actually falls ALWAYS, but there's nothing wrong with that.

 

Isnt looking at a boost guage accurate enough to determine boost pressure.

 

Haha! Um, no.

 

I might have to check-up on what I am really boosting
~thanks