Jump to content
The mkiv Supra Owners Club

MkIII supra boost limit


hodge
 Share

Recommended Posts

I'm doing some work on a mkIII at the weekend including fitting a boost controller. Does anyone know the safe boost limit for a CT26 turbo. I would have thought it would be around the 1.2 bar mark.

 

Anyone know for definate.

Thanks

John

Link to comment
Share on other sites

Fuel cut varies on the mk3, people have had it as low as 9psi and over 14 psi. The generally accepted limit is about 14 psi normally.

 

A FCD can help with this but you run the danger of fuel cut not kicking in when you actually do need it.

 

Shimming the wastegate is a common mod that can easily knock you off the top of the stock gauge so ~10 psi+

 

With lexus+550s you can go way past that to high teens or low 20s but that's down to other factors such as afr setup as well

 

Has it got a standard exhaust with cats? Losing them will gain you a few PSI, obviously make clear to the owner the more they boost the more likely they are to need a head gasket!

 

Oh and 14.5 psi = 1 bar

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.

 Share

×
×
  • 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.