imported_TO23

Im thinking making one of this MBC for my setup. Is this reliable or is this asking for trouble? Let me know what you guys think. Check the link:

http://www.c-speedracing.com/howto/mbc/mbc.php

I tried Home Depot to see if they have the parts, didn't find those parts there. Do you guys know where in GTA i can get those parts to see if this really works.

Thanks!!

zeeman

iTrader: (1)

i actually just tuned a car with one of those boost controllers and let me tell you....don't waste your time.
The amount of control it had wasn't worth the $4.
It was a little different than the one they make in the c-speed article. It used a "tee" that had a barbed fitting 2 of the sides and a hex bolt and nut (to hold the bolt still once you've made your adjustment) on the other side of the tee. Inside (under the hex bolt) was a spring and ball i beleive.
The way it was supposed to work (according to the instructions) was the more the hex bolt was screwed into the "tee" the more boost it should run. It did work, but going from all the way out to all the way in only made about 5-6psi difference. All the way out was 5psi (just like the spring in the internal wastegate) and all the way in was like 11-12psi.
Unfotunately, it didn't hold the boost very steady. We we're trying to hit 10psi and hold it steady, but it would spike up to 11(ish) psi and down as low as 8psi. Even when it was turned down to 5psi, it would spike up to 6-7psi and back down to 5psi. When we removed the boost controller it held steady at 5psi all the way through the revs.

VTEC_Thunder

Reliability costs $$$ but it's worth it.

If you want to control boost levels accurately you could go with an electronic boost controller.

zeeman

iTrader: (1)

electronic boost controllers are $$$$.....i've got an apex-i AVCR electronic boost controller. Its pretty good, i like how its got gear dependant boost control. With it you can also quickly switch from low boost settings to high boost settings by switching from the [A] settings to the [B] settings.

Manual boost controllers work, but not the cheap ones. Most of the cars i tune use manual boost controllers and they seem to work well for the most part, but the cheaper ones seem to have a harder time holding a steady boost level.

VTEC_Thunder

So true. I had a *** t3(from an 80's audi 5000cd) on my cavalier with a huge porsche external wastegate(not sure which one) and I had a cheap dial-a-boost manual controller on it and on the lowest boost setting it would creep from 7psi up to 12!!!

Car went like a bat out of hell tho...LOL

imported_chris_v2

MBC's tend to spike and not hold boost steady. I've seen some hold, and some that haven't.

Personally, I'm buying the same controller zeeman mentioned. It'll probably run me around 500, but IMO its worth it.

imported_TO23

EBC are pretty expensive. Zeeman tuned my car about 1 month ago and highest boost I get was 14lbs. I have this MBC i think its the bleeder type so im still figuring out how to hook this one up.

Its hard to find those parts so i'll probably not waste my time looking.

I'll stick with 14lbs for now and go to Cayuga to see what kind of time this baby run.

Thanks guys!!

brianmcgaugh

ECtune will have a an EBC function within the EMS, if it ever comes out.

VTEC_Thunder

If you get the right version, the megasquirt standalone units can also control boost.

zeeman

iTrader: (1)

megasquirt on a honda?.....why?

eCtune will never come out, calvin (the developer) is too busy with other stuff. He and his group of people that have been using it for like a year are happy how it is....so i wouldn't hold you're breath for eCtune.

There are manual boost controllers that work pretty good, but for the most part, you get what you pay for.

VTEC_Thunder

I didn't mean to use megasquirt on a honda specifically. I just meant you can get a stand alone unit from megasquirt that will control boost without having to install a seperate controller. Thats all.

And yes, you CAN run ms on a honda. It would be like runnig any other stand alone on a honda. The best thing to do? of course not. It's much easier to tune with crome or similar program.

There's nothing wrong with ms. There's nothing wrong with crome. You know crome, I know ms. I agree crome is better for tuning on hondas. On my 87 MR2 SC, the ms stand alone works great and is easy to tune.