On my all motor b series I put skunk2 race manifold and 90mm throttle body. I calibrated my tps .50v closed throttle and 4.5v wot. when I go into smanger to set it up there. I get -5% closed and 60% open and idea how to fix that. Thanks

 

It has been a bit since I have done it, but have you read the throttle position with it closed and with it open?

There is a button next to the percentages that you click "read", this is when you have your laptop hooked up to the ecu and your tune file open, click the button when the throttle is closed and then hit it again at WOT. You can also go under the S300 ECU Guide and go to TPS Parameters and read more about it.

 

the -5% and 60% is when I click on the read button with it hooked up to the laptop.

 

so I put the old throttle body and another tps on I'm still getting the same numbers. I was going threw smanger and the map sensor is not reading. so its either the ecu or the wiring harness. has anyone ever had s300 not reading sensors

 

Your MAP and TPS sensor plugs are swapped... switch them and try again.

 

I tried swapping them. it does nothing

 

on s300 display I'm getting with the car off. the number never change. its either the hondata s300 which is new or new wireworx harness.
map -29
ect 302
iat 302
tps -13

 

 

Try another s300 from a friends car first for testing.Ive got a friend with those same prob and the s300 was not installed right in the board

 

Is the J12 jumper cut in your ECU ???

 

 

 

 

 

 

 

 

 

 

If I do the usb update . That probably won’t fix the ecu from flashing red with usb not even plugged it in right.

 

Did this ever get resolved? Having the same issue with mine -5% & 60% etc etc and it doesn’t read any movement from the TPS.

thanks

 

The ecu was junk. I Got another one worked perfectly.