Jump to content

Effect of throttle stop on TPS calibration

Recommended Posts

Hi guys, 


I had my car tuned late last year and it is going great. 

When the tune was done the idle was a little low around 500 RPM.

We left if as we did not have the tools to wind up the mechanical idle stop. (I am not running any kind of idle control valve).

I can achieve a good idle at about 2% throttle. 


If I wind up the mechanical stop to the point where it is idling nicely (2% throttle) and re-calibrate the throttle will it put the tune out as now the old 2% throttle has become 0%. 

I understand the 100% position will remain unchanged.


As it is running ITB's and the load axis is the TPS, will this cause me some issues in the low percent throttle areas or are the differences so small that it does not matter? 




Share this post

Link to post
Share on other sites

I agree, even though it is unlikely going to change the tune noticeably if you did re-zero the TPS, you are best just to leave it alone so that it reads 2% or whatever at idle, this will keep the fuel map most relevant.

Share this post

Link to post
Share on other sites

Thanks guys. I think you are right just leave the calibration for now. But I will back it up incase I ever do it. 

ClintBHP good spotting on the mk2. Yea gives me somthing to do at nights. 

Share this post

Link to post
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.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  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...