InstiTS, were there any modifications to either TS, other than the Squadra chip? And did you lose anything, like low rpm torque, poor idle, or poor gas/petrol/benzina mileage?
I gather you feel the chip is worth getting?
While I would much prefer not to have to, I would be wiling to add an additive, providing I can find one that really works. Many years ago when I lived in Pasadena (about 12 miles away) a station sold 98 octane whose cost was about double the rate of the next highest octane (92). Assuming they still sell it, I don't believe I'd be willing to drive that far to fill up.
Both cars are running on 98RON octane (Australia).
Red TS has full CSC mild steel exhaust with oxygen sensor, cat delete, k&n pod (bad choice outside of 3am drives or Winter!). This is the car with the Squadra chipped ECU originally.
White TS is almost bone stock, only has the fuel quality plug set to 97RON (I later found out when stripping the interior. It explained why it went so hard compared to my slightly worked red car (I always thought it was the fact it had a second gear synchro that worked!). It also has a fairly growly aftermarket rear muffler which may have little bearing on performance...
I had a little run with a mate from a second gear pull and to make things fair (famously worn synchromesh). Both cars shifted into 3rd at almost the same time. Red car began pulling away in 3rd cleanly, it was more or less was side-by-side throughout second with the white car.
In regards to torque and economy with the Squadra chip. The white car starts up fine, idles smoothly (both with and without the chipped ECU) running on 97RON, open-loop setting (this car has a standard cat and an aftermarket muffler that looks like a Sprinter style muffler, haven't confirmed this). The red car is set to 95RON, closed-loop lambda control (yellow plug) and idles a little rough for a few seconds on cold start, nothing really noticiable. If the red car is changed to 97RON it runs like a pig until it sorts itself out. It will then start okay around 10 minutes after shut-off, leave any longer and it will forget it's parametres and idle rough again for a few minutes (maybe overfueling on tickover IMO, not sure what would cause this?)
Anyway, overall the chip increased economy. I recall getting approx 30-50 more km a tank, but this could be down to a change in driving distance, highway at the time, etc, but I DID NOT notice worsened economy. For performance, the chip greatly increases response throughout the rev-range, especially down low which I put down to better distributed torque curve. The car pulls more linearly in this fashion, and pretty much you don't have to hit 4k each time you want it to go, that said, I do miss the kick in the backside when it 'came on cam'.
I cannot explain the reasons why one car idles fine set to 97RON and the other is rough on cold start. They both don't use the lambda sensor at all on this setting, even at operating temp.. it wouldn't even be used when on tickover for that matter.
Anyway, I recommend the chip and playing with the fuel quality plug first and foremost with the TS, it will give you a noticable amount of power for a fairly small price, considering against exhausts/headwork. Swapping the factory ECU for the chipped ECU is nearly depressing, I can only drive one car with the chipped ECU fitted up to it... otherwise I miss it greatly!
If you do decide on the chip, maybe try 95 closed-loop/97 open-loop setting on your local fuel quality/intake/exhaust setup and see how it idles on tickover (keeping in mind catalytic converter life), either way the chip is well worth it! Hope this has been insightful.