No! You DO NOT WANT HIGH BOOST in low RPM's, 1300, 1800, 2000rpms is a no no! around 2800-3000 rpm is ok to start making ur way to 6,7,8,9,10,11...etc lbs of boost! And by "bypassed" u mean how to prevent it from boosting to high in low rpms..? Well easy, An ECU tune will do the trick! mak...

MBC+Properly Tuned ECU= LOTS OF FUN! of course stage zero and other little mods. Its all in the tune of the ecu! my ecu is tuned to only allow 3lbs in 1st and so forth, or once im passed 3000 rpm all hell breaks lose! Have my 850 gLT with the 13g turbo pushing 12 lbs of boost at 242 hp all day long ...

Look at Turbosmart "T" MBC (89.95) wanna spend the momey on a MBC if u cant afford a EBC. That said, running the T MBC with ARD white tune, at 12lbs 253 HP, on my 1997 Volvo 850 GLT, Absolutley STOUT and made the car a whole new animal.been about a month and no spike in boost, doesnt boost...

Only thing i did was replace the yellow and blue vacuum lines from the turbo control valve, cleaned the maf sensor and replaced the air filter. Ill check to see if there are any detached lines and corroded elbows and check back with more! Thanks for your input!

Thanks, heard this is the place to go if u have a volvo related question, and as of now i have no boost guage so i dont know exactly how much im making but i can just feel that the car isnt taking off like it use to! I need my GLT to come back to life! lol

Hello there, i had just bought a 97 850 GLt, I had it for about 3 days now, great running car love this thing but just yesteday it just stopped producing the correct amount of boost! Still runs drives idles and handles like it has 5000 miles on it! So im guessing/hoping it isnt something major becau...