barnett87rx7

iTrader: (1)

will this boost contoller work and then i could just get a boost gauge to use to adjust it properly

http://cgi.ebay.com/ebaymotors/MANUA...ht_2987wt_1167

Hypertek

iTrader: (3)

yeah you can do that. my first turbo car i had the luxury of buying a $$$$ electronic boost controller.. you barely ever touch those things, just set and forget.

Evil Aviator

Yes, but in addition to the boost gauge you will also need a fuel cut defenser to keep the stock ECU from cutting off the fuel supply at the higher boost level, possibly an upgraded fuel pump to maintain the higher fuel demand, and maybe a ported wastegate if the engine starts to exhibit boost creep (more common in S4 than S5). Also, an electronic boost controller is better because it will nearly instantly actuate the wastegate as required as opposed to a manual boost controller which gradually opens and closes the wastegate, contributing to lag. However, if you just want to raise boost a bit on a budget and you are not concerned about maximum performance, then the manual controller is fine.
http://en.wikipedia.org/wiki/Boost_controller

arghx

iTrader: (3)

don't get a boost controller and fuel cut defender until you have adequately planned for handling the boost creep that may arise

Spirit-RE

iTrader: (25)

I've heard some bad things about the ebay MBC's, such as the boost controller will not stay at the boost you set it at, possibly raising the boost too much, and possibly blowing your motor. I personally went with one of these just for insurance. http://www.hallmanboostcontroller.com/

just my $0.02

barnett87rx7

iTrader: (1)

I should habe noted my additional mods are going to be a bnr stage 3, custom tid, 3 inch straight pipe exhaust upgraded fuel system, and an rtek2.1

barnett87rx7

iTrader: (1)

is this a better way to go im trying to stay as least as exspensive as possible im running out of money on this build

http://cgi.ebay.com/ebaymotors/d2pow...ht_4727wt_1222

RotaryRocket88

iTrader: (7)

Go here: http://www.gusmahon.org/html/boostcontrol.htm. Read up on making your own MBC, or at least to get a better idea of how these things work. The ebay MBC might be ok, but from what I hear the directions frequently tell you the wrong way to hook it up. And that EBC looks overkill and annoying. A missile launch switch for an on/off toggle...really? You don't need something to adjust all the time. Once you find your ideal boost setting, you can leave it alone.

arghx

iTrader: (3)

^^ that looks like a really cheap EBC with very few features. It looks like a 3 way solenoid valve (same basic design as you get on almost any external EBC) and a dial that adjusts a fixed duty cycle. There doesn't appear to be any way to keep the wastegate completely closed during spool ("start boost" or whatever term you want to use). It also doesn't have any self correcting logic (target boost or gain features) to keep boost steady or adjust for changing weather conditions. The cigarette lighter power is not going to be reliable enough, the torque of the engine will make the connector shift and possibly lose power. You'd have to hardwire it. I wouldn't worry about the instructions possibly being bad, EBC plumbing is all the same really if you understand how they work.

For the money though... it wouldn't be bad if you actually hardwired it to say the ignition harness. You better hope that cheap solenoid doesn't stick though, you'd blow your motor for sure.

If you want to be REALLY cheap but super reliable, adjust the stiffness of the wastegate actuator on the turbo to your target boost. Spool won't be optimum but it'll be dependable with nothing to install.

barnett87rx7

iTrader: (1)

is a manual boost controller as good as a electronic one?

arghx

iTrader: (3)

heck no

but it's simpler and cheaper, and can get the job done by a lot of other people's standards. And a properly set manual boost controller beats an improperly set electronic boost controller.

the problem with the EBC in that ebay kit is that it is a dumb ebc that lacks most of the basic features that other EBC's have. It doesn't adjust the solenoid duty to maximize spool and keep the boost consistent.

OEM EBC's are very smart, they can do all sorts of cool things like automatically lower the boost if the engine knocks

2slow4stock

iTrader: (18)

Yeah, I have to agree that a MBC does suck. I have a knock off one, and my set boost is 7psi, but I don't see that till after 6,000rpm. Anything under 6,000 rpm is going to be 10psi+ 14-15psi max. I hate it, since I am over working the turbo.

I don't have an fcd, but the N370 ecu I have lets me hit over 8psi without a fuel cut. Weird.