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Will my engine run lean? manual boost, test pipe, uic pipe, & remove restrictor

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koreanpersuasio

20+ Year Contributor
203
0
Jul 15, 2002
HI. I went to DSM.org..and it was a lot of help, but it didnt answer these naggin questions. I dont want to hurt my car. Will i run the possibilty my engine going lean? I was just going to do the following:

1add the test pipe
2add manual boost controller (only add 2-3 psi boost?)
3remove the restrictor in the wastegate
4possibly upgrade the uic piping

I have the stock exhaust, stock turbo, stock fuel pump and injectors, turbo xs bov, msd ignition wires.
If i do the above mentioned items, will i be in danger of running lean? I have a boost gauge.
 
you won't run lean unless you turn the mbc all the way up...even then i don't know if you would run lean with a t-25...if in fact you did, you would probably hit fuel cut before any damage was done to your motor...tell you the true, i wouldn't even put a mbc on a t-25...
 
really? my friend has a gsx with a manual boost controller...he added like 2-3 psi...said my car will go a lot faster. but then i just found out about the restrictor thing on the selenoid...and if i remove that..i get like 2-3 more psi boost...so should i just do that instead?
 
i guess you could, you would just be moving alot of hot air though...if you remove the orifice in the bcs, you may get 1-2psi...i was getting 15psi with the orifice removed, but the t-25 wouldn't hold that after 5000-5500 rpm's...it would fall to around 12-13psi...the t-25 spools up fast, but runs out of breath almost just as fast...have you ever taken your car to redline in 1st, 2nd, and 3rd gear???ever notice that after about 5000rpm it doesn't really feel like you're going anywere???
 
You can run lean, trust me I did and blew my motor back when I was on the T-25 and a DSM beginer listening to idiots like germain 101. A MBC is worth it because it already so cheap. Don't bother messing with the restricter solenoid you could boost 15-16psi still flowing a descent air temp. Just make sure you do atleast a fuel pump rewired.
 
hey, I get that. I have no power at all after 5000rpm. Your saying its because I'm not holding boost? Its passing me off :mad:. I am putting in a boost gauge, boost controller, intake pipe, upper IC pipe next week. Might this help? :confused:. I have stock turbo.
 
Hi. Okay, well i appreciate everyones help. i will do the fuel pump rewire first. then put in the boost control and the test pipe. and then do the uic radiator piping..if i can just find a place that sells the 90 degree bend pipe. thanks!
 
you can run 15-16psi without a boost controler IDIOT...please answer one question...at what point in my posts did i tell him to put the mbc on and turn it all the way up and blow his motor, because i don't remember saying that...the point that i rember trying to make was that with a t-25, you're not going to see huge results with a mbc and he won't run lean just by adding the parts that he was talking about...
 
Originally posted by germain101
you can run 15-16psi without a boost controler IDIOT...please answer one question...at what point in my posts did i tell him to put the mbc on and turn it all the way up and blow his motor, because i don't remember saying that...the point that i rember trying to make was that with a t-25, you're not going to see huge results with a mbc and he won't run lean just by adding the parts that he was talking about...
Click to expand...
Well SMARTGUY it im not mistaken you did say " you won't run lean unless you turn up the mbc all the way up... Even then I don't know if you would even run lean with a t-25" Don't give out dumbass info like this, you can cause another BEGINER like you to mess up their engine. I am no longer a newbie to this DSM game, so please for future reference just shut the hell up until you gain some knowledge.
 
" you won't run lean unless you turn the mbc all the way up... Even then I don't know if you would even run lean with a t-25"

you're right, i did say even then I DON'T KNOW if you would run lean with a t-25...that's because i never put a mbc on a t-25 and turned it up all the way trying to get something out of a turbo that isn't worth a #@%#@%#@%#@% to begin with...

as far as me being a "beginer", i'd put money on the fact that i have had my car a hell of a lot longer than you have...have you done any real work to your car or just bolt-on's???have you ever changed a t-belt, head gasket or a bad valve???have you ever built a 6bolt motor???when you swapped out your turbo, did you do it???i have done all these things on my own so i hardly consider myself a "beginer"...but, you know, if you have then good for you...

obviously you knew that he would run lean if he turned his mbc all the way up because YOU did that and ruined your motor...i've never tried to do something like that with the t-25 because i knew it wasn't worth trying to get more than 15-16psi with the stock side mount...anyways, i'm not going to sit here a bicker with you back and forth about who knows what or who's a "beginer" or not...

all i know is you don't need to be telling people, that could probably stomp a mud hole in your face, to shut the hell up or call people idiots over the internet...and i won't make any coments on any subject unless i'm a 100% sure of the end results...

this is my last post to this thread.....
 
I just get touchcy when I think about how my first motor blew with only 21,000 miles. Threw a rod bearing at only 16-17psi on a t-25. That MBC should work fine, I couldn't tell you the difference never own a MBC only EBC, but I do know how to install it!
 
Hey germain..what do you think about that mbc that i bought off ebay? i have the directions and am ready to first do the feul pump upgrade...then do the boost guage and then do the mbc.

I need 2 stoppers for the mbc install...to plug the intake hole and the turbo compressor housing hole. what size do i need?

also i need a tee fitting for my autometer boost gauge (it didnt include one!) do you know where i can find a tee fitting that has grooves on it? the tubing for the autometer is very small in diameter.

thanks guys!
 
All the parts you need will be basic koreanpursuasio, and between car-quest and home depot you will be fine. I hate to do this becaus I know you looked here for fuel pump stuff, but VFAQ.com has all the MBC info you need. Brand name does not matter in the install, only the quality of the boost controller.:cool:
 
Leaking is probably the #1 prob with shoddily made boost controllers. Anyone else have thoughts on what problems a crappy BC could cause?
 
well, I bought a used MBC from a friend of mine.
When we put it in, we couldn't make it not run full boost. we ended up taking the screw out, and inspecting the ball/spring unit, the ball was covered in gunk, and had stuck itself into the hole at the bottom. So the MBC wasn't letting any air through, and my car wanted to boost to as high as it could go (It was going to 20+, but I'd stop pressing the gas, of course)

Also, the spring in mine is very tight, and I had to back the screw very nearly all the way out to run at 15 psi

Just make sure you have a boost gauge, and keep an eye on it, especially when you first put it in.

-Jesse ("Hooray, I'm helping" - Dr. Zoidberg)
 
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