Any mbc can run stock boost level, you don't need one unless you want to raise the boost over stock. As far as the wastegate goes, the reason to run external is for an aftermarket turbo setup that doesn't have an internal. If you have an internal wastegate, you do not need an external.

Well I got a used turbine housing and the flapper came loose so I took it to a friend to weld it. The f***er took off the wastegate arm and it moved honestly I don't think he perfectly centered it because my boost gauge moves near 4000 instead of 3000. Plus I want to upgrade both so that when I do get a ecu and logging instrument. I have the MBC and wastegate there already. And thank you for answering both questions.

Are you saying he welded the wastgate shut, and you aren't running a wastegate at all? That is no bueno my friend.

Please clarify the last post because, at least I, didn't find it clear as to what your friend did

I apologize and honestly. My engine would be a grenade after the pin was released if that was true. Lol. Mine has the long rod that the wastegate arm grabs to push the flapper up. Now the metal rod goes through a pipe that goes through the turbine housing. He welded the pipe to the housing so the flapper wouldn't move out of position. But since he removed the wastegate arm before securing it. I think it moved and I'm now losing psi through a small crack. That's why I want to upgrade the wastegate.

Ok, makes more sense now. If you are dead set on running an external wastegate there arw a few options. Super cheap = welding a flage to the stock manifold and welding the flapper shut. Cheap = taking flapper off and using an external wategate housing as the o2 housing. With a quality wastegate either will net you better boost control over stock actuators.

Yup so know that I know that it doesn't matter what MBC I buy I'll slowly but surely upgrade my car piece by piece. But would you guys recommend a ebc or should I buy that when I upgrade the ecu? And maf. Or should I upgrade the maf then turbo components? I've done a lot of research on the maf, and honestly it looks like a sketchy upgrade. The 2g requires a ecu upgrade or do they both? I read that I can just put in 550cc injectors with the 2g maf, but what about the gm with transfer hook up thingy.

If you buy an mbc you are basivally buying the same part twice if you get an ebc later on. Stick with the mbc.

Honestly, I wouldn't waste the money on either until you upgrade the fuel system and a way to tune. The boost is the last thing to worry about. Tell me this. If you had a set of injectors and a tuner, would you be more inclined to tune them to your current platform. Or b, if you had an mbc, would you rather make a 1/4 turn on the dial and say, "well, that worked, lets do another 1/4 turn".... and then end up in the dsm graveyard thread...

Go to the faq section on the forum. There are so many other things to do than the mbc... the mbc = why does my engine sound like this.

It may not be the path YOU want, but the car has been tested and beaten up for two decades to make the mod list pretty damn accurate.

No offence to the people who decided it was a good idea to just. Turn up dat boost. But since I'm a mechanic, engineer, and have a amazing understanding of cars, combustion, and compression ratios. I just want a MBC now to set it at stock boost and never touch till I have a upgraded ecu, but if you and others think I should focus on the shitty maf sensor which is the only thing trash on 1g dsms. Then I'll go that route. My point for asking is to get opinions and information I couldnt find anywhere because it was obvious I guess.

Since you have the most exquisite of tuning capability, you should answer your own question. Spend $80 on a 40 cent piece of vac line to the wastegate and run stock pressures, or throw away the 40 cent vac line and buy a $80 quality mbc to sit there and run the same pressure

Follow the upgrade path. Its 20+ years in the making.

Like stated before, I know, mbc sounds so bad ass on a mod list talking to a 15 year old. But having things properly set up, THEN making boost adjustments and actual power sounds so much more bad ass to a real car guy.

So many mechanics on here that want to doubt spoken and lived truth.

Mbc at stock boost = money not spent on something more important. Just talk words spoken in gangster thug ricer talk. Mechanic.

I'm not trying to be rude, but you're getting agro when someone suggests making real adjustments to the car. Even in your case, using a 2g mag and 550's won't require a mbc. The mbc won't be needed until you want to make much more power with the car, in which case you won't really want the 550's. that's not a rwal "power adder" upgrade... maube do a few fuel upgrades, tuner, a clutch for breaking 300hp, since the stocker won't hold up long after the fact. THEN get the mbc and tune.

No point now to waste money on something a simple vac line can handle, that's all I'm saying. Upgrade all you want. But start with fuel and tuning, not boost, even if you keep it stock

I see all this talk of upgrade with no goals.

That's because there is no goal. Well...I suppose preparation is a goal in a sense but I want to upgrade the turbocharger components since they are cheapest. Well MBC is. A whole new maf with transister will run me way more than a MBC. Don't even get me started on the ecu. I just don't have that money. I have a job that barely pays out so most my money goes to gas and I want to upgrade the turbochatgers components. One more time. (I WANT TO). and like I've said. It is staying stock boost till I have money to finish upgrading what I need for my HP goal.

wolf alchemy said:

I just want a MBC now to set it at stock boost and never touch till I have a upgraded ecu.

Click to expand...

To run stock boost, you do not need a boost controller. Run the pressure line from the j-pipe directly to the wastegate actuator...

Thank you all for your comments and opinions. I see all your points and they are valid. Though I don't really think anything has changed my mind. If anything its made me more comfortable with getting a MBC. If you ask why. Its simple. It can run stock boost. That's it. Also I'm going through the upgrade list cheapest parts. Not trash, but as in MBC≤ECU. there fore, buy MBC now. And then turn up boost once a tunable ecu is bought.