Jump to content
The mkiv Supra Owners Club

Boost drop in midrange


StainedBedSheet

Recommended Posts

Hey there, I have a 1998 Toyota Aristo VVTi

 

my mods are

 

Precision 62mm turbo

 

tial 44mm mvr wastegate

 

775cc fic injectors

 

aeromotive 340 pump

 

radium rail

 

mapecu3

 

aeromotive fpr

 

A340 with billet accumlators and transgo shift kit

 

Hallman and a Grimmspeed Manual Boost Controllers

 

-----------------------------------------------------------

I have a 10 psi wastegate spring put in, when I had it wastegate to compressor housing the boost would go from 9-10 psi in all gears.

 

I had hooked up my Hallman manual boost controller and between 5200-6000 rpm it drops from 14 psi to 10 and then it starts to go back up. I thought I might have had a faulty boost controller, So I pulled off my grimmspeed boost controller off my Probe Turbo and ran that and I have the same issue.

 

Now I just don't understand what it may be, Ive never ran into this kind of issue. Heres my Zeitronix logs I marked out where I did my pulls.

 

-------------------------

 

http://s000.tinyupload.com/?file_id=83221953599613226723

 

 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.