my question is... if i have an internal wastgate (8psi) can i use a boost controler and push 10psi with out having to chane my wastegate? we put a controler on my buddys civic and insted of pushing 10psi it just hold a steady 8psi..... is that because of the wastegate or?

 

You only need the boost controller. Maybe on your buddies car it was hooked up wrong or not turned up enough.

 

Also if you are looking for a little more boost, you can run the vac line to the wastegate from the IM. You may have already done that, don't know if you are hitting a full 8psi.

You can pick up inexpensive MBC's online everywhere, or make your own.

 

are the MBC worth while? i want to bump it to 10psi after about 2 weeks and hold it there! i hear they adjust them selves sometimes.... should i worry?

 

My MBC holds steady with no spikes. It has a allen set screw to keep the adjustment **** from moving. Sure I could have built it for less than 10 bucks at home depot but I'm a lazy bastard and bought it off ebay for 43 bucks shipped lol. Works damn good though. Stock spring is 8psi, I raised it to 9.5psi and have set it to as high as 12 with ZERO spikes or fade. I wouldnt say I got ripped off I knew what I was in for. A cheap *** home-made mbc. http://motors.search.ebay.com/_W0QQg...sortpropertyZ1

 

Dont want to hijack but its better than me making a thread lol

Im new to controlling your boost so bear with me

Say I have a turbo that is internally gated stock, but I want to convert to external wastegate. I block off the wastegate hole and run a 35/38mm tial with say a 12psi spring. Now that means I cant go below 12 psi right?

And all I would have to do is raise the boost on my electronic boost controller (im getting elec) to say 16psi and it wont matter than I only have a 12 psi spring? No adjustment have to be made on the wastegate to the spring?

Thanks

 

yes, you take the interal wastgate off, the o2 housing if there is one, by a block off flange and weld a flange on your mani for a external. you wont be able to go below whatever your spring is rated at and the EBC will raise to whatever you want it to be