2022 Toyota Fortuner Sigma losing power

[karamnadeem04]

I purchased a brand new sigma back in 2022 from Toyota. Have driven it 18k up till now. Just a while back upon checking it with my friends new legender we noticed my car was noticeably slower. Since then I have checked it with multiple fortuners of the same generation and have concluded that my car is inevitably slower. Got the car checked on Maxpower motorsports dyno to further confirm my suspicion and again found out the car is making around 25whp less than what a normal stock car should be making. Since then I have gotten the car checked from multiple workshops including Toyota itself and have tried every possible solution to diagnose this; from boost leak tests, air fuel ratios to all fluids and filters. I have gotten every single thing checked and changed yet have found no hope. I have spent about 1 lac on this diagnosis up till now. It is only proving to be a waste of money trying to figure out the problem but my curiosity would kill me if I left it at this. My car has been more than well maintained since the day it has arrived. Everything I am using is genuine Toyota besides the oil for which I’m using Caltex Delo 15W40. If anyone has ever heard of something similar or has a possible solution please help a brother out. I am helpless at this point.

[JunaidDogar]

Visit a professional mechanic.

Which city?

[hash4u]

@Xulfiqar

[capsat]

Fortuner Sigma has 1GD FTV diesel engine

you are using wrong engine oil. Go through the user manual as it comes with every new vehicle, you may have missed reading it to date. change interval is 7500 kms

This thread has 1GD FTV recommended oil table.

[Xulfiqar]

Is the engine seeing full boost?

[karamnadeem04]

Yes

[karamnadeem04]

Lahore

[engnr.mubashir]

Did you get the fuel injectors and fuel pump checked for any flaws ?
Also get the EGR and exhaust leaks on flanges and manifold checked.

[capsat]

please click @syncview have an appointment for diagnosis. make sure you have complete data of your spending without positive change.

[Xulfiqar]

Any modifications? Like tires etc?

[rajaatta]

Are you serious about the 15w40 delo gold!!!!!!!!!!

This is 1GD FTV not an old school 2 C diesel engine.

Flush that thing up and get Valvoline TGDI 5w-30 synth oil and there you are good to go. Enjoy.
That shit 15w40 has ruined many engine performances if TGDI is not available then go for Toyota 10w30 or any other synthetic engine oil.

That is the only problem you are facing

[rajaatta]

Or else visit Ali Raza Gul at The lube shop for best engine lubricants and your performance problem would be solved.

[karamnadeem04]

Stock tires, no mods

[capsat]

@karamnadeem04 before doing anything else change the engine oil and oil filter, please

[qwertypoiu]

Change rikshwa oil use 5w30 of some good brand.