Komdotkom

As others have said it's not that simple. I didn't bother trying a timer (for pump start up) then SSD voltage control vs wheel speed because that car didn't have an ECU that could easily be made to do that (Autronic SM4). I would still use a powered column if I was to do it again since they are simpler to configure the amount of assistance provided.

Hmm, not on the GCG website and Ebay is showing they are out of stock. I wonder when they'll actually be available. Price seems to be about the same as an 8374

Not that simple with the Astra stuff unless you know the CAN protocol. If I was to do it again I'd do a powered column instead of an electric pump.

Following with interest, while I agree it's a pretty expensive bit of kit for what they provide but when you consider that you could ruin a race weekend with a damaged belt or bin the car due to power steering failure it doesn't seem so bad. FWIW I have put Astra electric power steer on a car and would never do it again without being able to adjust line pressure vs wheel speed, it was like driving a 70's Valiant with power steering with zero feel/feedback.

My tarmac rally car had one of these in it! I couldn't find anyone with a computer that ran on steam to tune it, so the logical solution was to spend $15k on Motec shit. I'm pretty sure it's still in the shed if I can find it you are welcome to it, has a tune for RB20 with highflow and made about 7kw at the wheels, good for 1:45 at Sandown.

That must be a handful, 200kw to 400kw in 500rpm. Thanks for taking the time to post something interesting and some real world results.

I need a core to send in for highflowing, anyone have a dead OP6? Or even just the front cover?

What has changed between the older version of the 21U highflow and this one?

I've got a mate with a JRZ package on his IPRA car, and another mate has them in his 996 Turbo, they don't and shouldn't make this noise. I would 100% be making a warranty claim on these because that's not a 'normal' noise for a set of $1000 BC's let alone a high end manufacturer like JRZ. To me it doesn't sound like an internal damper noise, I'd be looking at all of the mounting points and investigating areas for free play and movement to occur. Another good street/track option that's got decent support in Japan is the lower spec Ohlins Road&Track. https://www.ohlins.eu/en/products/automotive/nissan-skyline-gt-r-1993--29/ Or just get a set of MCA's, I've got the gold series on my car (3 way) and they fantastic. There's no local support for them but you can just ship them back to Murray in Australia and he'll do whatever you want and then ship them back to you.

Good luck mate, I searched for ages before I found one.

At the risk of sounding like a smart ass, there's a lot more to it than 'mono tube are better' For example, arguably the best dampers in the world the Ohlins TTX 40 are twin tube (that's what the TT stands for) https://www.ohlins.com/product/ttx40-mk-ii/ Having said that, they are a well researched and engineered solution from a company that expends a huge amount of time resources on a product that works. I think generally speaking for less well resourced/mass market companies a montube is simpler to execute to a higher standard and provides increased flexibility when pushing out designs across a number of platforms.

I've just started using RevZone and have been pretty happy with the work. I like to understand exactly what happened on the dyno and review the logs, issues and solutions with the tuner which Justin and his team are happy to do. My car has a fair bit of Motec gear in it and a pretty custom setup, so it took some mucking around to get it right. When I got the car back, the cold start wasn't awesome (not terrible either, just some hunting around 20c) so I sent Justin a quick email to see if they could give me some pointers as to the cause because there's a few comp tables running concurrently at that time in my setup. Rather than just give me the answer or tell me to bring it back, he offered to send his tuner to my house to fix the problem free of charge. Pretty good service I reckon. I've had cars tuned at many other shops in the past and have been less than impressed. Good power tunes but shit attention to detail and poor drive-ability.

This is surely a troll of epic proportions. Is it school holidays again?

This is tops, love your work.

I made it myself.