2nd Generation Specific 1986-1992 Discussion

more boost?!

Old 03-11-2011, 11:55 AM
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i have just installed a BNR stage 1, and its only pushing 8 psi... the stock turbo when i bought the car was pushing 11, the car is tuned for 11psi. does anyone know if you can up the boost on this turbo with out having to get a eletric boost controller?? because with the stock one didnt have the boost controller? also idk if mine still has the defender on it, when i cruse in 5th then ease into it at 4k it bogs and drops to lean for a sec then back to normal and pulls hard? plz help thanks
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Old 03-11-2011, 07:08 PM
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Either a manual boost controller or an11 lb spring made for the wastegate. Neither are as reliable as an electronic boost controller though
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Old 03-11-2011, 08:10 PM
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Originally Posted by thatpoorguy View Post
Either a manual boost controller or an11 lb spring made for the wastegate. Neither are as reliable as an electronic boost controller though
hmm ok, how does a boost controller work?? i mean how does it hook up. i dont have too much money right know,and i leave for USMC bootcamp in august, so im just looking to make her a little more peppy till then... if you know any good brands or web sites i would appreciate it, thanks again kevin
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Old 03-11-2011, 08:57 PM
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i was also wondering whats the differance between a bov and wastegate? when i had the turbo sent in they put a 50or 40mm wastegate on can i just get a stiffer spring? or does the boost controller replace the wastegate??? im really confused right now any knowledge about this will really help thanks :/
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Old 03-12-2011, 01:38 PM
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A boost controller is adjustable allowing you to keep the pressurized air from getting to the wastegate till the pressure you specify. Electronic ones are preferred because you can set the boost and go, plus more tuning options. Manual boost controllers use a **** to mechanically do the same thing, but you have to turn it a little at a time then drive it hard while watching your boost gauge. Repeat that till you get the pressure you desire. The wastegate is nonadjustable unless you swap the internal spring.



A wastegate allows exhaust to bypass the turbo so as to control the boost pressure and turbine speed. A blow off valve releases excess boost pressure when shifting or getting off the gas to prevent turbine surge aka turbo surge
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Old 03-13-2011, 08:40 AM
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Originally Posted by thatpoorguy View Post
A boost controller is adjustable allowing you to keep the pressurized air from getting to the wastegate till the pressure you specify. Electronic ones are preferred because you can set the boost and go, plus more tuning options. Manual boost controllers use a **** to mechanically do the same thing, but you have to turn it a little at a time then drive it hard while watching your boost gauge. Repeat that till you get the pressure you desire. The wastegate is nonadjustable unless you swap the internal spring.



A wastegate allows exhaust to bypass the turbo so as to control the boost pressure and turbine speed. A blow off valve releases excess boost pressure when shifting or getting off the gas to prevent turbine surge aka turbo surge




yea i figured most of this out by doing a little research, thanks for the info
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Old 03-13-2011, 09:46 AM
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You'll get a decent amount of money at bootcamp, the trick is not spending it all at your tech school/ait lol. I was airforce and I walked out of tech school about broke lol
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Old 06-15-2011, 03:34 PM
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so placing a manual boost controller will that allow less pressure to be bypasses in a external waistgate? im running 9lbs on external with no boost controller..... if i place a boost controller on it, i can make it 5lbs if i wanted? and can you go hire than the wastegate spring 9+ lbs?
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