2015 Forester 2.0

[richard_crl032]

On 3/13/2023 at 3:20 PM, inlinesix said:

WIth EGR delete, NOX in exos in exhaust will increase.  Not sure whether need to retune for petrol engine.

MY fren diesel pickup did NOX delete.  No retune done.

It restore the power and torque of a 10 year old pickup.

The only downside is soots in exos during cold startup.

It is a 15 mins job to remove the pipe and cover it up.

Quote:

This. In layman's terms -- it will change the effective AFR within the cylinders, perhaps drastically.

 

[richard_crl032]

Read that even for diesel engines without retuning is not ideal with error msg for a reason and torque solution kit for wrx specifically mentioned about retuning .. paiseh but only keyboard warrior and not real experience 🙏🙏

https://www.ford-trucks.com/forums/1647899-running-egr-delete-with-no-tuner.html

Edited March 13, 2023 by richard_crl032

[5ub23r0]

EGR delete with retune is to optimise engine performance and longevity especially cars produced in the past 5-8 years due to the proliferation of ECU controls and mapping. All vehicles nowadays will have EGR, especially diesel cars, with EGR + DPF (diesel particulate filter).

the EGR, works hand in hand with the catalyctic converter and DPF (for diesel cars/trucks) to remove most particulate and toxic gases from exhaust. if you remove EGR without tuning, your car will still work fine for awhile but the cat will be running hotter due to more particulate going throught the cat, and the cat might fail earlier (although i have not seen this happneing yet).

frankly speaking if you plan to keep your car inspection friendly and don't want the hassle of retuning the engine, then you might want to skip EGR delete, and just go for your annual or 50K mileage walnut blasting.

For diesel cars, the tune is absolutely needed as EGR is an integral part of emissions control, even more so than petrol vehicles (EGR could potentially recirculate up to 60% of exhaust gas back into the intake manifold for diesel vehicles; vs 20% of petrol vehicles). What @inlinesix mentioned here is a vehicle that's more than 10 years old.... vehicles back then could possibly remove EGR without a tune as the EGR system is not as aggresive programmed/setup as today's standards (Euro 4 vs Euro 5 vs Euro 6). I had a tuned d-max (not in sgp) with EGR system removed, DPF removed, highflow pipes and AOS for PCV management, uprated air intake but stock turbo. 20% more HP and close to 50% extra torque at certain rpm ranges. intake temps and engine bay temps reduced and there was FC improvement too.... but by removing all those everytime WOT is like setting a smoke screen (coal rolling). It ain't good for the people around you and the environment but it will satisfy your butt feeling.

 

Edited March 14, 2023 by 5ub23r0
spelling

[Watwheels]

EGR delete can pass inspection? I highly doubt it.

The EGR on petrol engines are still not as bad as diesel ones.

I think it activates when idling and under heavy accelerations where there are more unburnt fuel present in the exhaust gases. Adding a delete kit will causes the engine temperature to increase. That is what I read. Introducing exhaust gas into the air fuel mixture will maintain the engine temperature at optimal. It dilutes the oxygen levels to reduce the heat from the combustion. You might think it will reduce the engine power output. I think this is when the engine temp gets too high. I dont do EGR delete kit if this is the case. Last thing that you want is the excess heat reducing the lifespan on the seals and parts in/on the engine.

Anyway my car also has the EGR system. It has all the coolant running thru the pipe works to cool the exhaust gas before it enters the air intake manifold. I DIY remove the a piece of the pipe that connects the control valve output to the inlet to the air manifold and clean the control valve and air intake manifold with throttle cleaner. I do see some soot on the air intake inlet but it is not much. For the control valve outlet the soot is insignificant and there were no corrosions around the outlet. I read that cars similar to my car in the US theirs will corrode due to the lower RON in their petrol. 95RON is recommended, hence the reply they got from the car maker is to use more premium fuel.

I clean that part every 5000km. The pipe is just held by 4 hex 6mm bolts, 2 on each side. It takes a few more cranks to start the engine because the throttle body cleaning solvent needs to exit the combustion chamber. After the engine starts it is good to go.

Edited March 14, 2023 by Watwheels

[richard_crl032]

On 3/13/2023 at 3:08 PM, richard_crl032 said:

Hi Tohto,

No observed increase in FC and certainly no power loss before walnut blasting but trouble with reading more is that backside starts to itches.

In this case, I am glad to found out about walnut blasting cos the photos shows how carbon builds up despite coolant cooled IAG AOS and it cannot be good for performance and driveability .. call it preventive if you may. Engine does seems smoothly and quieter after walnut blasting with zero issue makes it attractive for me to do so again every 40k km max.

Using Octane 95 is indeed sensible per recommended by Subaru but I had always do with Octane 98 and a bit reluctant to change .. it does not help that mine is a bit heavy with all the soundproofing done together with ICE installation and Octane 95 loses a bit of grunt 😒

Read more of this EGR delete which I understand needs retuning and I will pass then .. no plan to do retuning unless backside itches again and failing inspection or legality is not an option 😌

Point in my original post is the AOS and certainly catch cans do not seems to eradicate this carbon builtup seen except mentioned delete EGR that I have no experience on .. I do recommend walnut blasting for your case since not done so by a capable workshop since already 175k km and do have photos of the valves taken before and after to feel good after $ spent 😂

Cheers.

PS: I am always with 5W40 motul 300v in hope for quieter engine with thicker eo and believe it also help in our hot climate and turbo charged engine

Related Technical Service Bulletin .. FNA also has its fair share 🤦‍♂️

https://drive.google.com/drive/folders/1u2TJZI6S9zjAP79XZy2FppW9nz7poeaG

[richard_crl032]

Many hidden dragons and crouching tigers here and guess not surprised ... many thanks for the teaching/sharing to an older noob 🙏🙏🥰🥰

Edited March 15, 2023 by richard_crl032

[richard_crl032]

On 2/7/2023 at 4:17 PM, richard_crl032 said:

Now at 1.23 after 1-2 second S+ to perhaps 4k rpm to get fast into lane#1 this morning .. seems turbo working fine with no leak then 🥳😅

 

 

Glad to update that turbo seem working fine ...

2-3 seconds with S# from moving and paddle shifted down out from corner to 5k+ rpm of my fxt to 90+kmhr and boost is now locked at 1.31 bar .. think 1.35 bar not an issue 😅😊🥳 

 

[richard_crl032]

Btw, did some minor reno as follows:

- polished away dirt and unslightly scratched external black painted B pillars

- reapplied gorilla tape to loosen window visors

- refurbished and resprayed prodrive rims and fitted new Mcguard security lock lugs as well as new but kept 3 yrs old external steelmate tpms .. >10 yrs old one from estima finally died

- removed and refitted front scratched 3M crystalline solar film

- polished and recoated front/rear windscreen and windows to reduce water stains especially on side windows

- polished and ceramic coated front headlights

- added japanese damping tape to Tein edfc extension rods for noise reduction after reading jap forester owner having done the same

- resprayed scratched up and bubbled paint of sti rear diffuser

- replaced stock room light bulbs to aliexpress brighter warm white leds

Planned and pending:

- bought and Xpel wrap of scratched/stain piano black gear plate

- bought cvt gear plastic trim to replace scratched one

- restitched spare stock gear knob to red and removed chromed trim for respray to matt silver .. to keep current chrome trimmed sti knob as spare

- removed and resprayed matt silver of aliexpress chromed gear cover trims

- bought spare coolant reservoir to respray black together with tube extension of windscreen water reservoir .. complete one is too tedious with all the sensor and wiring involved

- bought and received curved end rod ties used in forester ts, legacy etc. that reportedly improves ride comfort a bit as reviewed by Japanese forester owners

- replacement of leather wrap of aged kenstyle D shaped steering wheels

- refabricate of front center console opening to house Brax processor's "Director" remote control, usb outputs, ciagarette socket, sub input to Brax processor and voltmeter

Btw, engine with new lower block running very fine and smooth having just passed 10k km .. arguably best recent albeit expensive mod 😂

Continuing to enjoy my 5.5 yrs old fxt especially daily cte drive to send "angel nurse" dotter to new job at sgh.. perhaps more so than before especially with matching angkongkong sti inspired speedometer 🥳🥳😊😊😅😅

 

Edited March 25, 2023 by richard_crl032

[Mkl22]

Type of engine oil also affects the amount of carbon build up. Choose low ash oils to reduce this. 

[richard_crl032]

On 3/25/2023 at 9:27 AM, Mkl22 said:

Type of engine oil also affects the amount of carbon build up. Choose low ash oils to reduce this. 

🙏🙏 Had been on Motul 300V after initial factory mineral eo and nvr looked back and not sure if low ash.

Will just walnut blast every 40k km together with ultrasonic cleaning of injector in previous and now trusted ws to have the fxt running as well as I can invest on 🤞🤞

[Bplakad]

Can anyone advise whether the collin LED backlight for subaru forester is able to pass lta vehicle inspection or do i have to change it back to original before sending for inspection. 

[richard_crl032]

On 3/26/2023 at 10:03 AM, Bplakad said:

Can anyone advise whether the collin LED backlight for subaru forester is able to pass lta vehicle inspection or do i have to change it back to original before sending for inspection. 

Must change out .. 200% fails inspection.

Cheers.

[Greddy82]

@richard_crl032 where is Ur trusted ws?

[richard_crl032]

On 3/26/2023 at 2:10 PM, Greddy82 said:

@richard_crl032 where is Ur trusted ws?

Only BKS woodlands c/o professor Keong e.g. swee swee new lower block swap 15k km ago for personalised attention given to car and not just mechanics.

For more simple work e.g. suspension swap, cvt oil change etc., walking distance to BMS AMK Autopoint c/o Ah Hua/Ah Boy 🙏🙏

Some bros go to skm c/o Ah Heng who is a nice guy but parking there is not great and not specialised Subaru ws like BKS and BMS.

I am on MI's Svc package from day 1 till now at 117k km and up to 150k km to be further renewed .. need to support them to keep svc and part cost down for bros here ... truth to be said, I wish for independent party to monitor the condition of my baby as well as take advantage of major maintenance svc that makes it not as crazily priced as many reported .. 5 svc during their festive offer at 1.5k I think is fine and not subjected to varied svc package outside and dunno what done/not done.

Cheers.

Edited March 26, 2023 by richard_crl032

[Bplakad]

@richard_crl032 Thanks Richard. 🖐️

[richard_crl032]

Finally got all diy plastic primed de-yellowed caps and previously 4 yrs ago had plastic parts sprayed black for ease of maintenance, gim gim and bit more scratch resistant. ☺️

Next is to have diy primed blacken coolant reservoir fitted and windscreen fluid neck also primed blacken to avoid blacken dirt/stain/yellowing but not more since lower portion is with electronics and need mechanic as well as not too visible. 🤞🤞

Simple joy of a retiree with forester xt ... 

 

Edited April 6, 2023 by richard_crl032

[richard_crl032]

Done on spare coolant reservoir .. have unpaint cutout but found out open to check is not too difficult 🥳

Edited April 6, 2023 by richard_crl032

[Froglight]

Hey guys I just got a 2015 forester, is there a WhatsApp or telegram group I could join? Thanks in advance!