test run 8psi???

El Supracabras · 05-21-2011, 09:47 PM

Congrats on getting it running, looking nice .Good thing you have fuel cut, beats melting things. I would call Drift Motion and ask them about it.
I have that same i/c piping kit and I hate the crossover pipe. Why put those brackets for the pcv piping on if they don't line up with anything?? It kills me every time I look at mine.
Cheap "E-bay" boost controllers are what they are. Cheap boost controllers. You get what you paid for.
Looks like you are starting to spend a bit of money on the car. If it were me, I would save and get a nice electronic boost controller. They aren't too expensive used, just test it if possible and again you get what you paid for. I got a used Greddy Profec B for $100 off craigslist and love it.
Oh, and time to buy a real boost gauge so you can see exactly how much psi you are pumping. Well over 8 could be 10 or 20! 20psi + no supporting mods = high probability of a sad supra owner. Good luck and be careful.

Green7mgte · 05-21-2011, 11:14 PM

+1 El Supracabras

jcastro · 05-22-2011, 02:00 AM

thanks for the heads up I was about to buy the boost controller on ebay Ill just do as you said and get a legit one thanks for the help and advice guys I could not have gotten this far with out the help

btwilson86 · 05-22-2011, 09:40 AM

If you are overboosting, then why do you want a boost controller? All they do is regulate the boost pressure going to the wastegate actuator, allowing you to boost higher. You can't "turn down" the boost pressure a turbo creates by adding a boost controller.

It sounds to me like maybe your wastegate is not opening either enough or at all. Is the vacuum line connected to the actuator? Is your downpipe interfering with the movement of the wastegate?

jcastro · 05-22-2011, 10:22 PM

the vacuum line is connected to the actuator and there is no tear or leaks. As for the down pipe interfering with the waste gate I can not tell I think I'm going to put my old actuator on from my old turbo and see how that goes if it continues to do it then its my down pipe messing with my waste gate thanks for the heads up I did not even consider that to be an issue

I thought a boost controller could help my friend installed a turbo on a 87 325 bmw and was over boosting even with a build in waste gate set at 8 psi similar to mine. We installed a boost controller and it helped that's why I thought this is the same issue with my supra

05-21-2011, 11:14 PM	#2
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	+1 El Supracabras __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

05-22-2011, 09:40 AM	#4
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	If you are overboosting, then why do you want a boost controller? All they do is regulate the boost pressure going to the wastegate actuator, allowing you to boost higher. You can't "turn down" the boost pressure a turbo creates by adding a boost controller. It sounds to me like maybe your wastegate is not opening either enough or at all. Is the vacuum line connected to the actuator? Is your downpipe interfering with the movement of the wastegate? __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

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05-21-2011, 09:47 PM	#1
El Supracabras 3" Exhaust Join Date: Feb 2010 Location: Chicago Posts: 240	Congrats on getting it running, looking nice .Good thing you have fuel cut, beats melting things. I would call Drift Motion and ask them about it. I have that same i/c piping kit and I hate the crossover pipe. Why put those brackets for the pcv piping on if they don't line up with anything?? It kills me every time I look at mine. Cheap "E-bay" boost controllers are what they are. Cheap boost controllers. You get what you paid for. Looks like you are starting to spend a bit of money on the car. If it were me, I would save and get a nice electronic boost controller. They aren't too expensive used, just test it if possible and again you get what you paid for. I got a used Greddy Profec B for $100 off craigslist and love it. Oh, and time to buy a real boost gauge so you can see exactly how much psi you are pumping. Well over 8 could be 10 or 20! 20psi + no supporting mods = high probability of a sad supra owner. Good luck and be careful.

05-22-2011, 02:00 AM	#3
jcastro 3" Exhaust Join Date: Mar 2009 Location: El Centro Posts: 113	thanks for the heads up I was about to buy the boost controller on ebay Ill just do as you said and get a legit one thanks for the help and advice guys I could not have gotten this far with out the help

05-22-2011, 10:22 PM	#5
jcastro 3" Exhaust Join Date: Mar 2009 Location: El Centro Posts: 113	the vacuum line is connected to the actuator and there is no tear or leaks. As for the down pipe interfering with the waste gate I can not tell I think I'm going to put my old actuator on from my old turbo and see how that goes if it continues to do it then its my down pipe messing with my waste gate thanks for the heads up I did not even consider that to be an issue I thought a boost controller could help my friend installed a turbo on a 87 325 bmw and was over boosting even with a build in waste gate set at 8 psi similar to mine. We installed a boost controller and it helped that's why I thought this is the same issue with my supra