REVIEW OF CIZETA V16T BY ADAMGP FOR MUSCLE CAR GARAGE
First, you forgot to list full LSD in the car specs sheet.
PHASE ONE - DEFAULT TUNE
Initially I drove this car with
added parts at
default (no AIDS), and it's almost as woeful as the last time I drove it. Wheelspin is guaranteed during almost any corner. The braking distance should be measured in minutes, not metres. The SIFO technique (Slow In - Fast Out) turns into an embarrassing exercise of crawling through mid-turn, tyres squealing, while I imagine a slightly-tuned Civic flying past and laughing. Anything using the Fast-In tactic equates immediately to Fast-Into-A-Brick-Wall. The hairpins at GVS were truly embarrassing.
The high-speed corners are arguably worse. DO NOT ATTEMPT TO COAST IN THIS CAR. Twice in a row I hit the wall on the last turn at GVS, and managed a 720 degree spin on the first occasion. Both times took me so long to stabilise I worried about accidentally going into the pits.
I finally got a handle on it but it was simply less unsatisfying, not what I'd call a good car.
EDIT: a few laps later it approaches tolerable. That's the best I can say about it. I also did a quick B-Spec test (see below).
Let's see if Adamgp can change my opinion.
PHASE TWO - INITIAL IMPRESSIONS OF SPECS (BEFORE TESTING)
You've taken out heaps of the stiffness, naturally. Shocks seem somewhat counter-intuitive having the same ratio of 8/4, considering they do quite different jobs, but this is more likely to be due to my limited experience of tuning. I can't comment on the unusual camber for the same reason.
Stabs 1/1 is rather radical in my (limited) experience. Only time I saw it work was on a flat-out racecar. Once again, I can't see how it can balance against/with the shocks.
Brakes 20/24 I'm not sure about, cause I was told GT4 brakes work on ratios, not absolute values. ie, 20/24 equates to 5/6. Pls someone correct me if I'm wrong. Actually, the more I think about it the more wrong I think I am.
Gears look a bit bland, I don't like it when a tuner does relatively little to the overall curve.
On the positive side, I love the fact that you've taken it up by 3mm on the height. Some (myself included) might go for a 102/107-9 front/rear, or probably lower, and incorporate that into the shocks and springs. You seem to be taking a more considered approach and addressing the central tension in the car.
PHASE THREE - TESTING AT GVS
B-Spec test on Adamgp's tune: 2:20.109 first lap, 2:17.063 best of five laps.
B-Spec test on parts+default tune: 2:09.692 first lap, still the best lap after the first five.
The problem IMO is how to address the huge flaws in the car: the brakes, the understeer, and the dreadful cornering speed.
You've largely overcome the second problem, presumably through the softer suspension. If you pick the right lines on the right (ie long) corners, then you can really carve it up. It's much more tail-happy as a result during early, mid, and late corner, but it avoids the 'submarine' turning circle of default.
The brakes have been improved only slightly. Low to mid speed corners are slightly better, but braking from speed for a hairpin is now somewhat like a college student doing the 'helicopter vomit'. Not pretty, from any angle. I really think you should look at stabs, camber and toe (in that order). And try brakes settings like 4/7 or 4/9 at minimum, they could do the trick.
Cornering speed is just as bad as default. Again, I suspect camber and toe to be missing here, though I couldn't offer a better ratio, nor do I have time to test different settings.
FINALLY, on my third stint on the car, I figured out how you could possibly drive such a thing: use the handbrake, and drift through corners.
The normal brake is good for the sweepers, now that understeer has been largely eliminated. Hairpins simply need to be taken at a snail's pace. However, for the majority of corners, using the handbrake aggressively before turning will send you into a lovely drift that's very controllable, to the point of being a bit twitchy. Even I - being dreadful at drifting and not really liking the technique - was impressed by the potential for the car. It's beautiful to watch this donkey of a thing sliding gracefully through a turn with four wheels at a 50 degree angle to the trajectory.
In this sense, acceleration on exit is even more of a letdown, and not terribly well addressed compared to the default car. However, I'm simply terrible at drifting, so it could be a good tune for someone with more experience.
Overall, it's more than a worthy effort for such a notoriously difficult car. You really should point out how the car should be driven, however. Eg, I never drive drift cars, and guess that I haven't used the handbrake once since I started using the two analogue paddles three years ago.
This car should be a great drift car, perhaps you could post it over in that subforum to get some better feedback.