How to do the Rear BCS Delete on your Astra VXR (Super easy mod)!

Vauxhall Astra VXR / Opel Astra OPC rear boost control solenoid (BCS) delete tutorial.
This is a cheap, easy mod for the VXR that removes the lower boost limit in 1st and 2nd, making the car faster in lower gears. This also increases reliability, by reducing the number of vacuum lines that could potentially fail.
In this episode of the Disrespected Astra VXR series I'll show you what you'll need, how to do it, and the pros and cons of the mod, clearing up the common misconceptions.

[@Yodaracing1]

Good tutorial mate just stumbled across your channel just subbed good to see a fellow vxr owner Making content keep it up 🤙🏻

[@JamesBalazs]

Thanks mate, means a lot! I actually watched a couple of yours before I bought mine - just subbed back 😁

[@Yodaracing1]

@@JamesBalazs haha cheers mate feel free to copy some of my video ideas for your channel as I know how hard it is to think of videos to make 👍🏻

[@elivestin5353]

Thank u! I have been battling with serious turbo flutter on mine since I bought it. Suspecting that the vaccum box is broken. Will do this and see if it helps. (No the diverter valve diaphragm is not broken, I am running a forge unit) Thanks again and great video!

[@lewisdeanclark4091]

Obviously I’m guessing you fixed it but they do pop off at the back of the engine under the inlet manifold now and then especially if recirc valve is not fitted in exactly correct position

[@Donovanthegoodthings]

Thanks for video, did mine too now, the car goes much better. did new 3mm pipe all the way, went over the rocker cover, shorter distance etc

[@ReTroxStyleZ]

brilliant video mate. the debrief at the end was informative

[@JamesBalazs]

Thank you, it means a lot! 😁

[@Jose-jd6bo]

Best instructions by far, just did mine

[@williamyoulad7064]

Keep up the good work pal

[@JamesBalazs]

Thanks mate, really appreciate it 😁

[@HallattMedia]

Good video mate I'm wanting to do this to mine and also at the end of the video is that the viaduct near meadowhall?

[@JamesBalazs]

Glad you liked the video! And yeah that is Tinsley viaduct 😅

[@tijmeng8550]

- 3mm internal silicon hose - 3mm T-piece

[@PeteVXR]

Gr8 vid m8, done mine Sunday - much sharper now 🔥 Can I ask the best way to remove the Vac box and spanner size etc please? Thanks 😊

[@JamesBalazs]

The vac box comes off easy enough from underneath mate, not sure on the size of those bolts but you should be able to do it with a normal set of spanners or sockets. It'll be somewhere from 10-14mm at a guess 🙂

[@PeteVXR]

@@JamesBalazs Nice 1 - Thanks for the info 👍ill have a crack at that as well. Look forward to yr new content 😎 Take it Easy m8.

[@roberthordziejczuk6937]

Where did you buy that yellow hose that goes from the air filter to the turbo? I'm looking to shorten my intake and I like your setup

[@JamesBalazs]

That's an MTC Motorsport crossover delete, mine came with the car but they're about £80 brand new, direct from MTC on eBay. I'm personally looking to replace mine at some point as I'm not a fan of the yellow, but it does sound great 😁

[@knganchev]

Great video with detailed information. Can this option be applied to a z20ler (147 kW) engine?

[@elivestin5353]

Yes you can. I've had both, the procedure is exactly the same.

[@user33e5]

I did as you did and I can finally remove the P1243 error and it does not come back. The turbo sound has changed, it's a bit strange. (Z20LER 2.0 T GTC 200 HP)

[@sebastianrachmaciej1797]

Do your fault code happen to appear around 2,5k RPM? I'm actually running stage 2

[@user33e5]

@@sebastianrachmaciej1797 hej. Nie kod błędu już wcale nie wraca. Przed tym modem wymieniłem przedni elektrozawór przy turbo był nie sprawny słabo wkręcało się turbo lecz kod P1243 wracał po przekroczeniu około 3 tyś obrotów. Gdy zrobiłem bayapass czyli ten mod podłączyłem skaner i usunąłem błąd i nie wyskakuję do tej pory.

[@sebastianrachmaciej1797]

Ok, dzięki wielkie może w końcu odzyskam swoje koniki 😅 przy programie na 270 ten błąd znacznie obniżył wydajność

[@user33e5]

@@sebastianrachmaciej1797 nie ma za co. Daj znać czy zadziałało.

[@sebastianrachmaciej1797]

@@user33e5 działa

[@MrBrentSke]

Nice video mate what mm are the silicone hose

[@JamesBalazs]

3mm internal diameter silicone hose mate. Thanks!

[@Donovanthegoodthings]

Where does the boost solenoid from the bottom plug in the engine ?

[@Donovanthegoodthings]

Hi mate , what happens to the rear boost control solenoid now , is it still working ? Does it need to be attacehed somewhere ?

[@ilkin655]

good cars . what size wheels?

[@JamesBalazs]

19" Ronal wheels 🙂

[@ilkin655]

@@JamesBalazs thanks

[@lukebryant5362]

I got 3mm ID hose and it's too small?

[@lukebryant5362]

Nevermind a little swearing gave it the motivation it needed to get on there!

[@monkee.racing]

Don’t really see the point of this mod as your loading up your gearbox with all the torque shortening the life of the gearbox that’s already prone to braking.

[@JamesBalazs]

The point is it makes the car quicker 🤷‍♂️ if you mapped it a good tuner would lift the boost limit in 1st and 2nd anyway, there's no difference. If you wanted reliability you wouldn't tune a VXR.

[@Radunov]

Bad idea... Because you must for the First time know how this Opel engine work...

[@christaylor1753]

Terrible mod

[@tollasaron8605]

Explain?