I do not know how much time you have to spare but there is a lot written about some of this, some takes more digging, some not fully explored yet. I do commend your interest in some of the higher end of things like 2 way coilovers, etc.....
I would not hold my breath on what you want in coilovers though. This is a very limited market car with not many taking it to the level of wanting or needing dual adjustable coilovers. I have had Moton two ways with remote canisters, custom 3-way Ohlins that cost $8500, a bunch of others and for the money I am pretty damn amazed with the BC's which have been used on a lot of of race cars, I would not mind if they did an ST set in one of the mid priced offerings, MCS, etc...(Actually I was quoted more for 3-way MCS than Ohlins)
I am running 8/7k Swift springs on my one way BC's and they still ride better than the stock suspension and handle far better.
They did not have adjustable top hats when I got mine and I could not adjust camber at the strut, which is a very good place to do it, because of the 9" wide wheels being to close to them so I drilled new holes in the strut towers and trimmed the top hats a bit, -2.5 camber, longer springs withe same ride height as camber plates would of offered.
In fact when I went to the stiffer springs the separately adjustable ride height on the BC's really worked great as still using the longer springs(really same as the standard ones) but had to use up all but a tiny bit of the lowering to get the car down to were it was optimized for geometry meaning not that low. On the rear I had to take out one of the perch lock rings to get it low enough but no worries as one is against the perch tightened up just fine. I could or taken the other ring out no issues either but it would be a bit lower than I wanted, I like the rear a tad taller than the front but we also have around 600lbs in the car when loaded up for a site seeing trip out of the RV parks...
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If you are going to seriously race this car, built to some class rules, want to do all you can to win...then yes, dual adjustable, higher end coilovers would be the way to go but not really needed once you see just what this car can do on something as low cost as BC's.
I was at MMP in UT on the outer loop, very fast track, cyborg turbo not tuned that well so a bit over 200WHP, on used 225 RA1 tires, car not dialed in, 5 seconds faster than the national champ spec miata and 4 seconds slower than a recently built huge budget Cayman R race car and the shop owner that pretty much hates anything but Porsche was blown away at my lap times. My buddy in his national champ ST1 Vette, race instructor at MMP, said he was shocked that he could not gain on my through the Attitudes, the most technical and fun part of the track.
BC coilovers, 6/5 k springs, rears none linear which we know is not good for the track, stock front sway bar with urethane bushings and adjustable end links, corner balance not yet done....-2.5 front camber, zero toe, -1.9 rear camber, zero toe(huge task to get the rear camber I wanted)
I have urethane suspension bushings and a DIY 2 point front lower brace as I do not feel the car needs any more bracing and I have built fully caged race cars, this is my 3rd FWD car as well, my belief is disbelief until proven otherwise, adding a part not proven to make the car faster is most likely making it slower and the money can be used better elsewhere, like weight reduction instead of addition.
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When I parted and sold off the C5 vette race car the Motons went in for a needed rebuild, 5 races on them, the Ohlins I sold before I finished that car to retire to RVing, I have known of winning racers on BC's with 3 years on them, does not seem like junk to me
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There are other options but Cobb's AP has the best support and is quite an amazing unit, not sure there is a better alternative and you can get a great tune from Adam at Tune+, lifetime, $250 or so!
Yes, you can tune on a dyno but a road tune is going to be more accurate over more realistic driving situations, I would only do a dyno run or tune just do see how it compares, etc...Vdyno and a good online tuner are pretty hard to beat.
I have had an engine blown on a dyno by a bigger name shop, new car barely broken in, had it happen the day after paying $1100 for another car tuned by a really big name shop when I would of won a national TT event if not for blowing up the engine. I have not blown anything up on VD turing my early having fun with the Cyborg and SS working on it, Panda, DHM and now my favorite, Tune+. I have no intentions or need to go on a dyno:
You can have 5 switch on the fly tunes loaded on the AP.
You cannot make changes unless you buy the $150 optional tuner package but things seem to be changing in that area so make sure to be sure what is going on.
Or just pay Adam and get just what you want and alot more to gain even on the stock turbo, AP is a very very powerful tool and this car has a ton of things to tweak, 20 years in high end military electronics left me with no desire to learn it all which would take considerable effort, I prefer to drink cold brews and relax instead now but I do take a lot all it all as fun to see what the changes make happen