boost problem - Toyota Nation Forum : Toyota Car and Truck Forums

jdm_mr2 · 03-28-2009, 03:36 PM

okay i took out my car this weekend just finished doing an oil change and installed a manual boost controller for the time beeing. its a second gen mr turbo, while i was driving today i noticed that im having a problem, im driving and as at hit about 4500-5000 rpm my car just restricts me i dont know whats happening. so i tryed lowering my boost thinking its that but i still seem to have this problem can someone help me. and how would i know if my turbo is shot?

i do have a fuel cut defender installed but im missing an aftermarked boost gauge so i really dont know much im boosting right now

***MR2Jedi*** · 03-29-2009, 12:04 AM

If you were boosting fine before the MBCi nstall, I would say it's something with the MBC. Either the way it's hooked up or the setting.
I would not raise the boost without a boost gauge .

ToyotaTechGeek · 03-29-2009, 10:14 AM

Quote:

Originally Posted by MR2BAD

I would not raise the boost without a boost gauge .

+1

SnowRocker88 · 04-03-2009, 10:14 AM

Quote:

Originally Posted by MR2BAD

I would not raise the boost without a boost gauge .

+1 and on that note, I suggest the Omori 45mm boost gauge in the factory position...very clean, very nice!

TheEngineer · 04-03-2009, 11:05 AM

its probably boost cut from the VSV. Have you removed the vacuum line from it, cuz the stock mr2 is designed to cut boost at around 14psi .

See the TwosRUs instructions on how to install MBC and they list how to do it correctly
http://www.twosrus.com/catalog/produ...products_id=62

logimier · 04-19-2009, 06:12 AM

wow so im not the only one...lol anyway i was told it can be 3 things vacuum hose,a leak,or the ecu. my friend had the same problem got it fixed his was the ecu so i hope my is the same or less if you happen to fix youre problem let me know... and ill let you know aht mine was...lol...