TPS reading high

[Sookey]

Hi all, 

First time posting here, I'm just wondering if I could get some advise

I recently got a Link G4x plugin ECU for an 04 350z and during the initial setup I've noticed my TPS is reading around 4-7% after calibrations and I'm stuck why its reading high, I've seen that it should be reading around 0-2%, it results with the idle around 1500 and 2300. I've played around with the voltages but it makes the throttle less responsive and doesn't read small throttle adjustments.

I've been learning to tune on this car so I'm just looking for advice and guidance with this issue as I cant get my head round it, I've got just the base map on it at the moment, but once this has been solved I'll be renting a dyno and working more on the tune. I've been told I should just take it to a tuner but that defeats the point of my trying to learn to tune on this car

 

Thanks

[Vaughan]

If it is reading 4-7% after calibration while the engine is not running it is most likely because the throttle is not being controlled at that point (when unpowered the throttle plate typically sits a small distance from fully closed). If it is showing 4-7% while being controlled (should be able to hear a high pitched whine from it) you will need to look at your ethrottle target and PID tuning.

[Sookey]

13 hours ago, Vaughan said:

If it is reading 4-7% after calibration while the engine is not running it is most likely because the throttle is not being controlled at that point (when unpowered the throttle plate typically sits a small distance from fully closed). If it is showing 4-7% while being controlled (should be able to hear a high pitched whine from it) you will need to look at your ethrottle target and PID tuning.

Thanks for the info, I was seeing it whilst the engine was not running but had it in setup mode so it was being controlled and could hear the hum/whine

I will play around with the target and PIDs and see what I find.

[Sookey]

After having a little play around with PIDs I found my ethrottle target was higher than expected, I then found that my idle speed control setup was causing the ethrottle target table to be increased.

After adjusting this my TPS readings and targets are all good  

Thanks for your help!