Forged Astra VXR Hits The Dyno! (Will It Survive?!)

After my 300bhp Vauxhall Astra VXR / Opel Astra OPC blew up its engine a few months ago, I had the engine rebuilt with forged pistons and rods. After the rebuild, I went through a long 1000+ mile break-in process, and it's finally time to get the car back on the dyno with ‪@manaperformanceuk‬ to make sure the map is safe for a track day later this month, and to see if we can get any more power out of it!

[@PeteVXR]

Love the explosion 🔥 Glad it's all sorted and running smooth again mate 👍

[@Donovanthegoodthings]

Cant wait to see this

[@Yodaracing1]

Decent result mate for no inlet numbers are just pub talk anyway it’s how it feels on the road top video mate

[@JamesBalazs]

Thanks mate, feels amazing on the road now and that's what counts like you say 😁 if only we could put it down in this weather though!

[@lewisdeanclark4091]

Good luck mate pick mine up from rnd next week full new built engine 😂

[@JamesBalazs]

Nice one, I'm sure it will be amazing I've heard good things about RnD!

[@LiamPlester]

Yeah we need a pov please

[@Stallzyx]

Nice number plate, how much did it cost? Just about to watch the Cadwell Park one in a bit

[@JamesBalazs]

Thanks! It's the cheapest style they offer, so only £250 including the fees

[@danielwheeler228]

Are you from Sheffield

[@ajzcarz7117]

Great stuff, what turbo? Ko4

[@JamesBalazs]

Yes stock turbo 🙂

[@richli808]

@jamesbalazs what exhaust manifold and exhaust are you running?
I've got a Klasen Z20genx and a standard 2.5" exhaust.
Making 295 hp, but according to the Facebook I'm running too much boost - 1.8 bar.

[@matthewleadbeater6892]

Get a 3" exhaust will unlock more power torque. 1.8 bar is a bit high tbh, 1.4 should be around the max. Anymore and the turbo and possibly engine wont last unless its forged?

[@JamesBalazs]

Standard manifold and turbo on mine, and it does 1.3 bar.
The exhaust is 3" downpipe into 3.5" catback with a sport cat and 2 silencers.

[@NoFear1696]

Before wrapping the downpipe, you must soak the heatwrap in a bucket of water..

[@JamesBalazs]

I addressed that very clearly in the video. The manufacturer states you *can* but do not have to. It simply provides a slightly tighter fit.

[@AM-yt8wz]

Can it gap BMW e92 335d with 360 bhp regardless astra is lighter than bm ?

[@JamesBalazs]

Probably not, I'm sure the BM has much more torque and slightly better power to weight