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Help me diagnose this :(

wugggwug

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Abdulla
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2025 GR Supra zf8
Hi guys,

first time posting here so pls excuse me if im getting a bunch of stuff wrong.

My cars seems to be running slower than what it should be

MHD+ OTS Stage 2 tune on pump gas (98ron)

I have a catless downpipe so i dont think im being limited there.

Heres a log I have and just from my own research the conclusion im coming to is that im heatsoaked and the ecu is pulling my timing.
https://datazap.me/u/wuggwug/logs/c...annels=16x3-4&sizes=50x50&sc=3-16&axes=shared

However if its something else pls let me know.

Extra info that might help:

Im consistently running like 2psi under setpoint for boost antilag is set to 16 and i ran it to test what im reaching and i only get to 14 unless i let go, but even then its underboosting afaik.

On the sport displays my HP is only going to a maximum of 380 ish (pretune it was like 360 with a jb+)

The cars been pressure tested for a boost leak so I think we can mostly rule that out.

After this log I found out you can turn on sport cooling mode in MHD, for some reason it was on stock, ive since set it to sport.
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ColonelAdama

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Yes, pretty heatsoaked at 130+ iat. RF(load) limit #2 active - aka boost limiter. I can't remember which exact limit that is but most likely the one related to IATs. Try to get a log with IAT closer to ambient. I don't see anything wrong with it otherwise. typical for OTS
 

QTR FMS

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You have an Rf max 2 code triggers, which is a boost set limit. This can be caused by high IAT, but I think there might be another issue, possibly mechanical, and not necessarily heat-related.

first you need a custom tune to disable rf max 2, then we can look at other issues.

you can dm me if you need help with custom tune.
 
 








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