TexasAlltrac
New member
Well, I followed the instructions exactly for the home-made boost controller for my st165.
I spent around $20 all told, took 5 minutes to install, 5 minutes to adjust, and I am done. Finding a ball bearing was the only real challenge. Everything else was at Lowes and Autozone (vacuum hoses)
Stock was .5BAR. I set it to .7BAR and have no problems. I tried .8BAR, but the fuel-cut kicked in and then it would not boost past 4psi without cutting fuel till I turned the car off and restarted and set back to .7BAR
World of difference though from 8psi to 10psi. The car is much faster.
Thanks to whomever figured this trick out and posted instructions!
Only advice I can offer to anyone doing this is: start out with the spring having no tension at all so you will be at stock boost. Start adjusting from there there at 1/8th turns (or less) of the bolt till you get where you want to be. Very small adjustments can make a huge difference, so be careful.
Also, get a boost gauge before starting.
I spent around $20 all told, took 5 minutes to install, 5 minutes to adjust, and I am done. Finding a ball bearing was the only real challenge. Everything else was at Lowes and Autozone (vacuum hoses)
Stock was .5BAR. I set it to .7BAR and have no problems. I tried .8BAR, but the fuel-cut kicked in and then it would not boost past 4psi without cutting fuel till I turned the car off and restarted and set back to .7BAR
World of difference though from 8psi to 10psi. The car is much faster.
Thanks to whomever figured this trick out and posted instructions!
Only advice I can offer to anyone doing this is: start out with the spring having no tension at all so you will be at stock boost. Start adjusting from there there at 1/8th turns (or less) of the bolt till you get where you want to be. Very small adjustments can make a huge difference, so be careful.
Also, get a boost gauge before starting.