GI: MBC with creep protection and spool up control

Can someone please explain what boost creep is?
Are there ebc's out there that do not have this issue? Sorry, not trying to take attention away from your product, it looks great, but I have been planning on going with an ebc for a while now...gonna get better exhaust and new IC first though...
 
boost creep is when you have a set amount of boost like 8 psi, and as the rpm's rise or you stay on the throttle the boost creeps up from there... so say by the time you are ready to shift you'll be at 10 or 11 psi. Basically it just means that the wastegate is not being regulated enough or any number of things and thus the boost can creep up from where it is. It is often a factor of the turbo system itself, but is also a lot of times due to a flaw in the EBC itself. Like in the Greddy Spec-II a number of people have had the problem. It can in theory happen to any EBC that is not a closed loop EBC. Meaning it isn't constantly regulating the boost and the PWM of the solenoid relative to the pressure it is reading.
 
From dynos I've seen of the Mazdaspeed it tends to lean out when boost first kicks in and then drowns the engine in fuel. Do think having boost come on quicker could cause this to lean out more? I'm not saying that this happens just looking for a more knowledgeable opinion than mine. Otherwise faster spool-up sounds great and I would be very interested in this.
 
The ECU should be fast enough to keep up with the boost levels regardless... it is reacting to whatever the MAF sees... so as long as the sampling and response rates and the overall system latency isn't too bad the system should keep up. But frankly MPNick or someone who has gotten really down and dirty with the ECU itself would be able to tell you that. As far as I know it's really just that the system is setup that way... I don't want to comment on what I believe is the fuel behavior because I'm not 100% confident, but what you said sounds characteristic, but I think it is more rpm dependent than boost dependent.. but I could be quite wrong!
 
Damn, sounds good! Although my maps may need some re-tunning! Because for example: having 8psi when usually had 6 hmmm

so, hows this going? because I was going to do this myself but it was going to cost me some money.
 
well I'm definitely still negative on the cash side of things! LOL :) The products all seem to be working very well. The tricky thing is if you ever get an anomaly when everything works fine normally. I get wigged out if the needle twitches wrong, because I want this thing to run perfectly. I like the fact that the product looks very nice, and is sturdy and solid and the kit is clean looking. So that's a good bonus. Some of the other toys we are working on are fantastic as well! If I can get the next couple things together you guys will all love me! LOL :) But seriously, we have some electronics devices in the works that will be very affordable and very useful.

But all is going well so far, and a few forum members will have the MBC in their hands in the next week and assuming that all goes smoothly then I'll be full out pushing these things to be sold to all of you guys. But I'm being careful and making sure that what we do is the best we can do!
 
TurfBurn said:
But seriously, we have some electronics devices in the works that will be very affordable and very useful.
Click to expand...
(uhm) hmmm now....this reminds me...what about a detonation detection device?

I tried to build one with my friend last weekend, but not all resistors were available in radio shack. It was going to include the microphone too. Too bad(yupnope)

I need to order some stuff and do things right
 
well it'll be on the list of things to do.. Probably start with the microphone setup first.. so that the driver/passenger can listen instead... and then based off that I might be able to make further steps toward the detonation portion. The trick is ID'ing the right frequencies and so forth... that's what I'm concerned about... and trying to measure all that accurately and appropriately.... not easy! LOL.
 
Yeah...Im already doing the microphone thing, but I dont want to hear or make the protege detonate on purpose....you know what I mean...I dont want my engine to be the guinea pig. Im now testing it on a N/A car...the 87' GTI I have and probably boosting soon.
 
bah.. at the rate you go through engines it'd be just fine ;) LOL... I figure the stock MSP probably has enough detonation present for me to hear or so forth... and that's what I figured I'd check/test on or something. But don't know, my plate is really full right now, and I want to make sure everyone that gets an MBC or a MWC from me has complete support and is happy!
 
Just an update for all of you. SMP and Domino will have controllers before the end of the week. As long as their installs go smoothly and they are off and running we'll be set to go. I don't forsee any problems at this point! If you are interested in a controller already just email me at sales@nsnmotorsports.com and I'll add you to the list. Then sometime next week I'll ship out controllers for you and you'll be boosting up! It makes such a massive difference on the MSP. We moved it from 7 psi to 9-10 psi and it is a huge difference!

Thanks!

Steve
www.nsnmotorsports.com
 
This stuff sounds good. I might be interested in the MBC and the other thing that controls spool. Are you offering them now or are you waiting? I have an internal gate and I NEVER see anything higher than 8psi. As long as I would not see anything higher than what I have it set for, I'll get one from ya. I would not be a good person to test it since I don't drive the car much. I'll keep my eye on it for progress. When you have them BOTH ready and tested, I'll send ya some money.
 
Sounds good.. the MBC is precise to being able to adjust about .5-1 psi increments. Once it is adjusted it will hold the psi you set... but it can overshoot by about 1 psi in some cases... but that is usually a factor of the turbo. Other than that it is precise and stable.

The wastegate/spool controller is being a little more finicky and I am modifying the components to fix that. Once that is clean though I'll let you know!
 
TurfBurn said:
Sounds good.. the MBC is precise to being able to adjust about .5-1 psi increments. Once it is adjusted it will hold the psi you set... but it can overshoot by about 1 psi in some cases... but that is usually a factor of the turbo. Other than that it is precise and stable.

The wastegate/spool controller is being a little more finicky and I am modifying the components to fix that. Once that is clean though I'll let you know!
Click to expand...
How can you say it will hold then say it might overshoot? I would want it to stay all the time like my stock Internal gate does. If you were referring to some people having issues before the MBC then cool. So in my case since I stay solid right now, with your unit it will stay at whatever I set it at right?
 
It will do whatever your stock gate does. So in our test case on the MSP we will see it bump stock to like 7 psi and hold 6 and then with the MBC in it will bump to 11 psi and hold 10 psi. Things like that. It's a mechanical device so it has some error in it, it's not a closed loop. So 9 times out of 10 it will work perfectly but it may miss by 1 psi on the 10th try. There is always a certain percent margin of error in everything.. including your stock internal gate. But I'm not going to say it will hold the exact right psi every time as conditions will change and it will miss it once in a while... but not by any more than a stock system will usually miss it. and if you play with any other MBC or even a number of EBC's you'll see that they dont' do all that well at hitting the right psi a lot of time. This thing is very consistent for what it is and does. Frankly does a better job than my Greddy Profec does...

And the overshooting i was referring to was "spiking" of about 1 psi.
 
TurfBurn said:
It will do whatever your stock gate does. So in our test case on the MSP we will see it bump stock to like 7 psi and hold 6 and then with the MBC in it will bump to 11 psi and hold 10 psi. Things like that. It's a mechanical device so it has some error in it, it's not a closed loop. So 9 times out of 10 it will work perfectly but it may miss by 1 psi on the 10th try. There is always a certain percent margin of error in everything.. including your stock internal gate. But I'm not going to say it will hold the exact right psi every time as conditions will change and it will miss it once in a while... but not by any more than a stock system will usually miss it. and if you play with any other MBC or even a number of EBC's you'll see that they dont' do all that well at hitting the right psi a lot of time. This thing is very consistent for what it is and does. Frankly does a better job than my Greddy Profec does...

And the overshooting i was referring to was "spiking" of about 1 psi.
Click to expand...
I got cha!!! So when you are hitting 11psi, it is only for a sec, then it goes to 10 right? I like being able to not have to worry about spiking, but like you said, just about any controller will do that.
 
yep... it'll spike a little over... but it will hold 10 every time. We have noticed that the MSP likes to both fade and creep... and under relatively similar conditions... which is strange... but it does it MBC or not... so that's cool... But the MBC didn't eliminate it. Yours being a different turbo would hopefully be a little more consistent.
 
If you guys haven't done it yet... check out the webpage... it is nearing completion... any feedback is helpful too! Anything feedback wise for the products, packaging, instructions, web, support, etc... is GREATLY appreciated!

Thanks!

Steve
www.nsnmotorsports.com
 
the custom gauge stuff looks cool :) for the web site though, i'd say more pictures, less noises :) fill up the empty space, put pictures of products up (when they're ready of course) and put a different background, gray is pretty plain
 
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