test run 8psi???

jcastro · 05-21-2011, 12:04 AM

Finally go my supra running after all this work

Click image for larger version

Name: 05182011269.jpg
Views: 1234
Size: 290.8 KB
ID: 3950

However another problem happened I when to punch it and when I did my stock psi gauge shot well over 8psi I think I am hiting fuel cut off as well for a split second my car backfired and a light came on but when I saw the psi passing 8 I released. I bought my turbo from Drift motion and they stated that its limited at 8psi guess not. and I feel my supra is slower that ever all that noise and its going no where. do i need to put a boost controller and if i do are the manual boost controllers on ebay any good

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

El Supracabras · 05-23-2011, 05:15 AM

Don't mess with the actuator if the turbo is new, you may void any warranty. Put a good boost gauge on and find out exactly how much you are running. If it reads too high, something is wrong and you should call and ask Drift Motion. It's not easy to mess up the install other than leaks (I believe the actuator and hose are already installed and set) . I've heard they're very helpful to their customers though I have yet to use them. My friend has a 57 trim from them and its a great turbo (hits 10 psi without a boost controller with the same upgrades as mine).
If you have downpipe/exhaust, intake or intercooler pipe upgrades you may see slightly higher than normal boost. With a 3" DDP, full 3"l hi flowing exhaust, 2.5" intercooler/piping and an intake I was seeing 9psi regularly with the stock ct-26 and no boost controller (5 speed). After I installed an electric boost controller it dropped to 6 psi max (with the controller off). I have no explanation for the drop in psi.

jcastro · 06-06-2011, 01:51 AM

well iv been having a hard time reaching drift motion so i took matters into my own hands I removed the actuator and checked it the wast gate wast hiting or not able to open and it is able to move with ease so I am putting in the old actuator tomorrow thanks to poor lighting will let you guys know how it goes.

MJG · 06-06-2011, 03:59 AM

I removed the actuator and checked it the wast gate wast hiting or not able to open and it is able to move with ease so I am putting in the old actuator tomorrow thanks to poor lighting will let you guys know how it goes.

What was the waste gate or linkage hitting?
What changed, after the Driftmotion turbo install? Assuming this is a direct bolt on turbo, CT-26.
Just curious.
Oh, and boost controllers (manual or electronic) are highly recommended.

jcastro · 06-06-2011, 06:04 PM

the reason i removed it was because btwilson86 post this:

(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?)

So i went in to see if I had any leaks and if the down pipe was interfering with the waste gate but i was not and seeing I have the stock actuator and no cash right now for a boost controller I plan to install the old one to see if it helps to get me back to the old 8psi.

05-21-2011, 12:04 AM	#1
jcastro 3" Exhaust Join Date: Mar 2009 Location: El Centro Posts: 113	test run 8psi??? Finally go my supra running after all this work However another problem happened I when to punch it and when I did my stock psi gauge shot well over 8psi I think I am hiting fuel cut off as well for a split second my car backfired and a light came on but when I saw the psi passing 8 I released. I bought my turbo from Drift motion and they stated that its limited at 8psi guess not. and I feel my supra is slower that ever all that noise and its going no where. do i need to put a boost controller and if i do are the manual boost controllers on ebay any good Last edited by jcastro; 05-21-2011 at 01:58 AM.

05-21-2011, 11:14 PM	#3
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	#5
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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Free $$ to fix failed smog test cars - CALI specific	mrnickleye	Non-Generation Specific Questions	2	06-19-2008 12:20 AM
Shimming waste gate for 8psi.	redmaro	MKIII Supra	7	05-10-2007 04:03 PM
Emissions Test Info in "Your" Area/State	mrnickleye	Off Topic Forum	9	05-01-2006 01:11 AM
Emissions Test Info in "Your" Area/State	mrnickleye	Supra FAQ	0	03-05-2006 06:01 AM
Test.......	midwestmk2	MKII Supra	0	12-21-2005 08:40 AM

05-21-2011, 09:47 PM	#2
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	#4
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	#6
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

05-23-2011, 05:15 AM	#7
El Supracabras 3" Exhaust Join Date: Feb 2010 Location: Chicago Posts: 240	Don't mess with the actuator if the turbo is new, you may void any warranty. Put a good boost gauge on and find out exactly how much you are running. If it reads too high, something is wrong and you should call and ask Drift Motion. It's not easy to mess up the install other than leaks (I believe the actuator and hose are already installed and set) . I've heard they're very helpful to their customers though I have yet to use them. My friend has a 57 trim from them and its a great turbo (hits 10 psi without a boost controller with the same upgrades as mine). If you have downpipe/exhaust, intake or intercooler pipe upgrades you may see slightly higher than normal boost. With a 3" DDP, full 3"l hi flowing exhaust, 2.5" intercooler/piping and an intake I was seeing 9psi regularly with the stock ct-26 and no boost controller (5 speed). After I installed an electric boost controller it dropped to 6 psi max (with the controller off). I have no explanation for the drop in psi.

06-06-2011, 01:51 AM	#8
jcastro 3" Exhaust Join Date: Mar 2009 Location: El Centro Posts: 113	well iv been having a hard time reaching drift motion so i took matters into my own hands I removed the actuator and checked it the wast gate wast hiting or not able to open and it is able to move with ease so I am putting in the old actuator tomorrow thanks to poor lighting will let you guys know how it goes.

06-06-2011, 03:59 AM	#9
MJG 3" Exhaust Join Date: Mar 2010 Location: Washington State Posts: 125	I removed the actuator and checked it the wast gate wast hiting or not able to open and it is able to move with ease so I am putting in the old actuator tomorrow thanks to poor lighting will let you guys know how it goes. What was the waste gate or linkage hitting? What changed, after the Driftmotion turbo install? Assuming this is a direct bolt on turbo, CT-26. Just curious. Oh, and boost controllers (manual or electronic) are highly recommended.

06-06-2011, 06:04 PM	#10
jcastro 3" Exhaust Join Date: Mar 2009 Location: El Centro Posts: 113	the reason i removed it was because btwilson86 post this: (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?) So i went in to see if I had any leaks and if the down pipe was interfering with the waste gate but i was not and seeing I have the stock actuator and no cash right now for a boost controller I plan to install the old one to see if it helps to get me back to the old 8psi.