Get 400bhp in a Subaru STI ... WITHOUT ruining it !! | Fastline VF400 in action

[@racedynamix]

Stick around to the end to see exactly how hard I was finding it to talk to the camera in the artic conditions 😂

[@krokoautoperformance]

It seems to me all burned out from your head.... ha ha ha

[@racedynamix]

@@krokoautoperformance lol

[@harddiillion]

Great video and love Richard and his car !!! Sick

[@racedynamix]

Appreciate it! Thanks 🙏

[@royfrewer7896]

🤣😂🤣🤣 love the long looks into the camera 😵‍💫😵‍💫😵‍💫 keep them coming lol

[@racedynamix]

Roy, I have never had so much fun editing tbh.. Viv kept coming in to see what I was laughing about 🤣. Thanks for watching 🙏

[@ReubenSchoots]

If only this video came out 2 weeks before it did. Next turbo... Thanks for sharing.

[@racedynamix]

What did you get instead?

[@ReubenSchoots]

@@racedynamix A VF48!

[@racedynamix]

Good choice that though 😎

[@Scoobybowman]

Bloopers mind blank when in front of the camera 😂 keep the vids coming Duncan 👍

[@racedynamix]

Thanks mate. I was crying watching those bloopers back.. They HAD to stay in 🤣

[@SubaruVideosUK]

The bloopers summarise nicely why I don't talk to the camera... except for work webinar purposes 😂

[@racedynamix]

Yeah it is a lot harder than it looks particularly when you have been in a wind tunnel in sub artic conditions all day. Temps aside, the camera is a mind wiping device 🤣

[@jessever3655]

Love the videos. Do you do e tunes? I have a Forester STI JDM with lots of mods. Look forward to a reply

[@racedynamix]

Hi. I don't as it is very difficult to see exactly what is going on with the car and demands a lot of trust in the information, sensors and knock detection you have locally to get anything remotely safe.. But I will be teaching how to do it yourself, gradually, so tune into that series 👍

[@jimrustle643]

How I made a daily driven reliable 500whp in a STi just like the one in this video: 1.Built EJ257 closed deck block from OutFront motorsports 2. Nitride salt bath crank, Manley rods, CP pistons 9:1 3. *ALL FASTENERS ARE ARP* 4. Brian Crower forged valves, valve springs, titanium retainers 5. OEM camshafts 6. NGK one step colder plugs 7. IAG TGV deletes 8. IAG V3 AOS system 9. IAG PTFE multi fuel line kit AND IAG fuel rails 10. AeroMotive FPR 11. Injector Dynamics 1300cc multi fuel type injectors (moving to 1700's this summer) 12. Grimspeed 3 port boost control 13. Process West top mount intercooler with matching hood shroud 14. Cobb engine management (switching to Haltech this summer) 15. Cobb E85 fuel system 16. Koyo aluminum radiator 17. OEM radiator fans (they push more air than aftermarket) 18. Cobb SP short intake 19. Tomei equal length manifold 20. Tomei up pipe 21. Forced Performance blue turbo 22. Invidia 3 inch catless downpipe 23. Invidia 3 inch titanium exhaust system with titanium muffler 24. Tuned to utilize 91 - 93 octane pump gas or straight E85 by MoBetta tuning. Pump gas tune: 370whp......E85 tune: 500whp My turbo is still in the prime range of boost power and not being overworked. My injectors are at 90 percent duty cycle which is why I'm moving to 1700's to have a more comfortable range.

[@jimrustle643]

I forgot to mention the dual fuel pump setup using the radium hanger and dual 400lph AEM multi fuel type fuel pumps. That does it for the engine build

[@racedynamix]

Great spec 👏 Shame the tmic is hiding it back but I can understand the reasons for keeping tmic 👍

[@jimrustle643]

@@racedynamix restrictions where I live, but I also forgot to mention how I've combated that specific issue. Utilizing the factory intercooler spray system which only comes with 1 nozzle in the shroud, I have plumbed an additional 2 nozzles to completely cover the top mount intercooler during warmer conditions. Using RO or distilled water of course to not allow for buildup in between cooler fins. Fmic is coming in the future, but with that comes a precision turbo 76mm and an overhaul. It's as is right now to be the best possible sleeper on the streets.

[@paulthompson4891]

Excellent video Duncan

[@racedynamix]

Glad you enjoyed it😁

[@ccarew87]

Hi Duncan, thanks for mapping my Impreza back in May. Would I need bigger injectors than the yellow 440cc side feeds on my MY98 GC8 JDM WRX Impreza to get to 400bhp with a Fastline turbo? Currently mapped at 338bhp with larger top mount intercooler, 255lph fuel pump, decat exhaust, Mafless K&N air filter, VF22 turbo. Also is a fuel pressure regulator required as well? Thanks.

[@racedynamix]

Good morning sir 😎 Yes the 440cc top out at 350bhp. A set of larger injectors would be needed.. Ideally 650cc upwards. Trouble is reliable or nice side feed injectors are rare so my best suggestion would be to go for top feed conversion. Fuji Racing do a lovely kit then you have a very wide range of modern and efficient injectors to work with. It's not a cheap step but if you must hit the magic 400 it is the best way imo 👍

[@curvaholic]

Awesome stuff I have a built 2.1l jdm hatch that vf400 is a nice option my 95ron fuel would probably hold it back though

[@racedynamix]

Yeah it would hold it back a bit but you will find that with any turbo and that fuel tbh

[@dannyboy640]

Really enjoying the videos, keep them coming. 👍

[@racedynamix]

Thanks a lot Danny. Really appreciate that 🙏

[@rev-you1975]

Great video as always. Love the bloopers.

[@racedynamix]

Thank you.. Glad you like them 😂

[@rev-you1975]

@@racedynamix I’m the same on my channel. Get it all planned out in your head. Then press record. And it’s radio silence between brain and mouth.

[@racedynamix]

@@rev-you1975 🤣👍

[@hunterhomeservicesracing6453]

Wish I could get that much power 1050 injectors 3” exhaust 207 engine Number 4 cooling mod Bigger sump Gt pump 3.5 turbo E 85 About 350 hp

[@racedynamix]

I'm not aware if that turbo.. I presume it is rated to higher power? Does seem low

[@hunterhomeservicesracing6453]

@@racedynamix Uses a TF06 turbine with a 7cm2 or 8cm2 turbine housing Billet 712GTP compressor wheel Comes with Turbosmart actuator This turbo supports 440HP

[@racedynamix]

@@hunterhomeservicesracing6453 350 is a tad on the low side then.. Making much boost?

[@hunterhomeservicesracing6453]

@@racedynamix 20psi

[@Morpheus_hawkeye]

making me want 400+ now lol

[@racedynamix]

That was the intention 😂

[@paulwoodhead1]

Great video. Always toyed with getting a turbo for my 05 sti (widetrack UK PPP Car). I installed a fresh 340lph fuel pump, PFR7B plugs and have a 3 port solenoid awaiting fitting. What else would I need other than the turbo for 400bhp with the vf400?

[@racedynamix]

Either slightly bigger injectors or a adjustable fpr to provide enough fuel. Decat or good sports cat system And either ported std headers or gt spec. Obviously a fmic will help give enough cold air too.

[@nickyear-w7749]

Can we do a video on mapping for a turbo change.?

[@racedynamix]

Hi Nick.. Yes. Will do something on this 👍

[@generalamzulosharde9446]

Class end 😂😂😂😂

[@racedynamix]

🤣🤣

[@n8scooby57]

Dying to bring the RB320 back to you D I've chopped and changed so many parts since it was last there ! PS did you get any software for the Final edition wrx sti yet ? Like flat shifting and launch control...

[@racedynamix]

Cool. What have you done? Yeah I have the software for the final edition. All the Ecutek racerom toys 😎

[@n8scooby57]

@@racedynamix lots ... from a sleeved block to a cosworth heads ! Hopefully see you in the summer months

[@FourteenSucks]

What number do you own mate? I'm currently getting an Engine built for number 128 :)

[@n8scooby57]

@@FourteenSucks RB320 is 288 and the FE is 76

[@silenthill87]

Is there a way to make the jdm have the burble noice rather than like an evo? Without loosening power etc

[@racedynamix]

Hi.. you would need to change the exhaust headers, the uppipe, the turbo and downpipe. I wouldn't recommend it ..Just grow to love the pure jdm sound of the jdm system 😍

[@mikeclaydon4365]

I have a 2004 JDM Impreza Sti and looking to get this turbo, would it need any fueling upgrades, like injectors, pressure reg or fuel pump?

[@racedynamix]

Matts JDM had std 550 injectors, fuel pump and a pressure reg turned up to give the headroom for fueling. 👍

[@shadow36057]

Hey bro, i have a Hawkeye version 9 jdm sti, are the stock internals safe with this turbo? What’s the hp limit on these ej207s?

[@racedynamix]

Hi :) Generally the JDM EJ207 STi engine is good for 450. Obviously it depends on how safely it is mapped as nothing is 100% bullet proof but they are a great engine IMO. HP Limits dont really exist for any of the ej engines as there are always exceptions but they should be safe handling the power of what these turbos can produce. Thanks for watching

[@kcong4958]

Hi, may I ask, if I were to to my K&N open pod air filter to some other brand open pod (from 6 inch to 4 inch maybe), do I actually need a retune on it?

[@racedynamix]

Hi. Difficult to say definitively without knowing your car or the tune on it. But.. If you are running a maf sensor and replacing the maf housing and filter then it may alter the readings from the maf sensor. That would in turn change the air fuel ratio.. And need adjustment in the maps. If it is just the filter on the end of the inlet pipe and the maf housing remains then it is unlikely to change much if anything. However, it is easy and very worthwhile to make a set of det cans following the instructions in my video to check that the car is happy. Check Afr with a wideband to make sure the same. I will be doing a vid on that soon. Or.. Do some data logging and tune in to the live stream that I will be doing and we can see what is going on.. Hope that helps

[@M1.942]

Hi mate could you tell us what supporting mods that jdm vf400 Subaru had, am looking to get to that type of power

[@racedynamix]

Hi. To get to 400 on that turbo set up on jdm you would want fmic, ideally some slightly larger injectors or fpr as the std 550 max at 400 ish on a 2.0. Obviously free flowing exhaust is needed too. Std headers are fine and no advantage in changing the twin scroll std headers.

[@M1.942]

@@racedynamix thankyou Duncan, am planning on having these mods installed to the car when the weather warms up I will contact you closer to the date for mapping.

[@M1.942]

@@racedynamix also what’s your opinion on gravity performance fmic ? Am looking for similar power to the one in the video

[@barilbaril1]

what would you recommend for a blobeye wrx? I've a straight line exhaust with toyo catback. I was looking to get this vf400 but I assume I might have to open up the engine. what would you recommend as an upgrade in order to fit this turbo

[@racedynamix]

Difficult one.. I have many customers with a std wrx engine running over 400bhp. They understand the risk that their engine could go at any point.. And generally can afford to replace or rebuild. If you can't then I would recommend sticking to a normal Vf35 type turbo upgrade as that makes for a great road car. Chasing power is always expensive

[@barilbaril1]

@@racedynamix first of all thank you for this info, I will learn how to work on ECU, and I will upgrade engine internals with time before moving to a bigger turbo. seems like a a built engine is the way to go in case I wanna get some extra hp

[@racedynamix]

@@barilbaril1 de nada 👍

[@scottporter4871]

I have just bought a stock JDM Forester sti type m. I think it's totally stock. What work would I have to do to achieve the 400 bhp range. I'm guessing it's not just the turbo. Would I have to have forge work done or would it be reliable/safe without that kind of work too?

[@racedynamix]

Hi. I prese this is the SF5 based 2001 version.. 400 is beyond the capability of a lot of the components tbh. Gearbox, engine, turbo, injectors, clutch, ecu, intercooler, induction.. It would be massively more expensive to go for 400 rather than 350 which would be a fraction of the cost.

[@scottporter4871]

@@racedynamix Hi, thank you so much for your reply. It is exactly that one, a limited edition version of only 800. I would be happy with 320 - 350. I don't abuse my cars so I'd just like a little more power. Where are you based? Have you got a website that I can contact you to discuss please? Many thanks again.

[@racedynamix]

@@scottporter4871 based in south of UK.. Racedynamix dot com 👍😎

[@scottporter4871]

@@racedynamix Thanks very much buddy. I'll give you a shout when it's in the county and ask you to do the necessary work from stock to just 325 - 350 bhp mark 👍🏻

[@racedynamix]

@@scottporter4871 👌

[@eap2986]

Would you say for a uk ej257 I’d need to forge internals to go near 400?

[@racedynamix]

The std pistons are the weak point.. Just putting some good forged pistons in will give it the strength needed for 400. The rods and crank are good enough for 450 which is where the casings or rather the liners in particular seem to start to fail. Thanks for watching 🙏

[@cheesebert206]

Have you had an experience with the RCM turbos?

[@racedynamix]

Yes mate.. Which one?

[@cheesebert206]

​@@racedynamix The RCM400 twin scroll?

[@racedynamix]

@@cheesebert206 it isn't a twin scroll. Twin entry adaptation and quite laggy

[@01hafkee]

How do your Dyno Dynamics numbers compare to Dynojet and/or Mustang from the US?

[@racedynamix]

Hi. US dyno who figures are roughly equivalent to the dyno dynamics flywheel figures in my experience based on mustang dynos. Also the flow rates for std vf turbos indicate this.

[@racedynamix]

Whp *

[@01hafkee]

@@racedynamix Thanks for the info.

[@racedynamix]

No probs. This will feature in an upcoming video that I am just finishing the planning for. Its a can of worms though 🤣

[@martinssau]

How much airflow it makes -g/s?

[@racedynamix]

which car ?

[@martinssau]

@@racedynamix the one in video with vf400 - interesting to see what's the max airflow reading you see.

[@racedynamix]

@martinssau they both had Vf400 lol.

[@martinssau]

How does it compare to vf48 hf ?

[@racedynamix]

The Vf400 is essentially a vf48 wit a big wheel in it. So probs very similar

[@martinssau]

@@racedynamix Thanks, was thinking like that. Since i'm in EU -- easier for me to get vf48HF. OEM injectors would get me to 400? What boost and afr You run from 5-7k ?

[@jono_d251]

Forester, 407.5hp on a top mount intercooler, is this possible on a sti tmic?

[@racedynamix]

Hi Jono. The sti tmic is not quite as effective as this Grimspeed one so I would say unlikely to get over 400. Having said that I did a 2.0L with the VF400 and sti tmic and that made 410 last week. All depends on engine health and other supporting mods.

[@leeelliott429]

@@racedynamix you mapped mine back in 2016 with a standard TMIC, with a SC38, 20% meth map, plus every conceivable bolt on, made 436/385 @ SRR , was good enough for multiple low 12 sec runs @ Pod and North Weald :) BTW great content Duncan

[@byronboost]

601 whp stock block 🤷🏽‍♂️

[@binkybop9252]

🧢

[@racedynamix]

I have no idea whether that means great or rubbish.. I'll say thanks though 🤣🙏 Cheers for watching and the hat 👍

[@bash5552]

in the description, you say laggy, are we speaking about 2.0 L engines or 2.5 ? @racedynamix

[@racedynamix]

Bad turbos are laggy wherever, but primarily on 2.0 👍. I have seen some shockers on 2.5's though over the years 😱