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Old 04-17-2006, 01:56 PM   #1
Rayman21287
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Default Manual boost controller with stock turbo?

Would it make a diff. If I put a manual boost controller in my car even though it still has the stock turbo?

Would you be able to simply raise the amount of boost to maybe 15-17 PSI?
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Old 04-17-2006, 01:59 PM   #2
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Quote:
Originally Posted by Rayman21287
Would it make a diff. If I put a manual boost controller in my car even though it still has the stock turbo?

Would you be able to simply raise the amount of boost to maybe 15-17 PSI?
yes and yes

should you ???
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Old 04-17-2006, 02:03 PM   #3
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IDK should I?
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Old 04-17-2006, 02:05 PM   #4
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I heard 04/05 WRX's don't take well to MBC. Not sure what the issue is but you might want to research 1st.
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Old 04-17-2006, 02:07 PM   #5
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*sigh*

bonus points if you have the stock up pipe and a BOV.
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Old 04-17-2006, 02:11 PM   #6
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Quote:
Originally Posted by Crawdads
*sigh*

bonus points if you have the stock up pipe and a BOV.
Lol...

MBC is just a cheap way of raising boost without EM

It will not mix well with the OL/CL transition on your 05

So in other words...I wouldnt try it
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Old 04-17-2006, 02:14 PM   #7
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If you are unable to figure out the search button on this site, I am going to say that you do not have a expertise to properly execute an MBC without grenading your motor.
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Old 04-17-2006, 02:29 PM   #8
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Do you think the turbo guru's at TurboXS could make it happen?
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Old 04-17-2006, 02:34 PM   #9
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Quote:
Originally Posted by Rayman21287
Do you think the turbo guru's at TurboXS could make it happen?
Ok...So you obviously havent learned to use the search function. These are all questions that have been answered time and time again...

Forget the MBC and get a AP or Utec to raise boost safely
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Old 04-17-2006, 02:36 PM   #10
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your car barely gives itself enough fuel STOCK....a MBC tuned by a n00b will kill the car.
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Old 04-17-2006, 02:53 PM   #11
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I have a txs mbc and run turned where it will spike 17 psi then at higher rpms it will lower to 15 psi it runs perfect. no problems, you will find though by shifting to a higher gear then your need and giving it more boost when it will hit fuel cut. example: driving 40 mph while in 5th gear and flooring it will only result in higher boost then your ecu will throw a cel which is the fuel cut.
overall it helps with turbo lag ALOT, just dont get to big headed and turn the nozzle.
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Old 04-17-2006, 03:08 PM   #12
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Quote:
Originally Posted by dirtymatt
I have a txs mbc and run turned where it will spike 17 psi then at higher rpms it will lower to 15 psi it runs perfect. no problems, you will find though by shifting to a higher gear then your need and giving it more boost when it will hit fuel cut. example: driving 40 mph while in 5th gear and flooring it will only result in higher boost then your ecu will throw a cel which is the fuel cut.
overall it helps with turbo lag ALOT, just dont get to big headed and turn the nozzle.
What kind of A/F ratios are you seeing? EGTs?
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Old 04-17-2006, 03:20 PM   #13
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Quote:
Originally Posted by dirtymatt
I have a txs mbc and run turned where it will spike 17 psi then at higher rpms it will lower to 15 psi it runs perfect. no problems, you will find though by shifting to a higher gear then your need and giving it more boost when it will hit fuel cut. example: driving 40 mph while in 5th gear and flooring it will only result in higher boost then your ecu will throw a cel which is the fuel cut.
overall it helps with turbo lag ALOT, just dont get to big headed and turn the nozzle.

.....deeeeeeeeewwwwwwwwd.....it is only time until ya blow it up doin that....and you WILL blow it up, no doubt
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Old 04-17-2006, 03:22 PM   #14
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Quote:
Originally Posted by Rayman21287
Do you think the turbo guru's at TurboXS could make it happen?


.....deeeeeeeeeeeeeeeeeeeeeeeeeeeeewwwwwwwwwwwwwww wwwwwwd......

READ ALL THE FORUM FAQ'S before ya do/buy/dream/jizz ANYTHING.....or ya likely gonna be
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Old 04-17-2006, 03:24 PM   #15
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the em on the 04/05s is diff frm the 02/03 DO NOT put a MBC on a 04/05 if you had an 02/03 sure put one on if you know what your doing and have the supporting mods and dont run 17psi constantly on the stock turbo it will die quickly
btw yes i run a mbc, yes i have all the supporting mods excpt em(shame on me) no i dont run it at max boost all the time i save that for track day
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Old 04-17-2006, 04:16 PM   #16
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i think that you should save your time money and risk and get some EM and exhaust.
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Old 04-17-2006, 04:52 PM   #17
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OL/CL transision does not have any problems in the 05, it was the 04. MBC in a stock car is a bad idea plus IIRC the maximum boost out of a td04 while retaining efficiency and reliability is 15psi your better off doing the 3/16 mod, I did it when I had only a TBE and it raised my boost from 13.5 to 15, then it went broke after 10k miles....
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Old 04-17-2006, 04:55 PM   #18
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Quote:
Originally Posted by xplane
OL/CL transision does not have any problems in the 05, it was the 04. MBC in a stock car is a bad idea plus IIRC the maximum boost out of a td04 while retaining efficiency and reliability is 15psi your better off doing the 3/16 mod, I did it when I had only a TBE and it raised my boost from 13.5 to 15, then it went broke after 10k miles....


what? since when?
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Old 04-17-2006, 04:59 PM   #19
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Call cobb... they will tell you... Gruppe-S can also confirm this...Its also been posted before its only an 04 problem....

Last edited by xplane; 04-17-2006 at 05:10 PM. Reason: Ive just read some of the 05 had the same problem, but its still not as percistant as the 05, my apologies
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Old 04-17-2006, 05:12 PM   #20
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Notice i did say i run a MBC it "SPIKES" 17 but lowers back to stock. i dont use it to raise psi just to reduce spool up time. it helped. as far as a/f still runs rich because of the SSQ BOV.
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Old 04-17-2006, 05:28 PM   #21
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Quote:
Originally Posted by dirtymatt
Notice i did say i run a MBC it "SPIKES" 17 but lowers back to stock. i dont use it to raise psi just to reduce spool up time. it helped. as far as a/f still runs rich because of the SSQ BOV.
You realize that spiking and blowing off are two mutually exclusive events and one will not make the other richer or leaner.
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Old 04-17-2006, 05:40 PM   #22
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spikings not a good thing and why dont you just save for a true EM system
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Old 04-17-2006, 05:50 PM   #23
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Quote:
Originally Posted by xplane
Call cobb... they will tell you... Gruppe-S can also confirm this...Its also been posted before its only an 04 problem....
So...will an '05 ECM solve this problem?
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Old 04-17-2006, 05:52 PM   #24
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Quote:
Originally Posted by xplane
Call cobb... they will tell you... Gruppe-S can also confirm this...Its also been posted before its only an 04 problem....

.....deeeeeeeeeeeeeeeeeeeeeewwwwwwwwwwwwwwwwwwwwd. ...ya smokin crack...LOTS and LOTS of crack if that's what ya think......ALL '04+ WRX's have the same OL/CL issue and MBC's are bad juju.
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Old 04-17-2006, 05:53 PM   #25
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Quote:
Originally Posted by Wagun
So...will an '05 ECM solve this problem?
.....deeeeeeeewwwwwwwwd....he don't know jack, and NO....ya need engine management....NOT a new ECU
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