That is obviously just the beginning and development continues. BimmerBoost wanted to know when they were planning to release their transmission upgrade, what the upgrades entails, if the TCU software can be purchased separately, etc.
These questions and answers below should provided some much needed details.
BB: What is the expected cost?
Nizpro: A fully internal Nizpro transmission upgrade will be approximately $ 7900 Australian dollars.
BB: How close is it to release?
Nizpro: We would like to be able offer full upgrades by Christmas .
BB: Who is doing the TCU software tuning?
Nizpro: Software calibrations are being done in house at Nizpro.
BB: Does the $7900 AUD include software?
Nizpro: Yes the calibration will be included as a complete package, however various calibration will be needed for various power levels.
BB: Is it possible to purchase the software separately from the hardware?
Nizpro: Absolutely, our plan is to offer calibrations totally separately. There will be a number of different calibration we will make available, for customers seeking different requirements. All will be based on standard transmissions, or of course our own upgraded transmission, if you have an upgraded transmission from another workshop you can certain use an off the shelf calibration but how it will behave I have no control over.
BB: What is the expected torque capacity?
Nizpro: Actual maximum torque numbers are a little hard to say, simply because there are many parameter that come into it. There is also a direct relationship with maximum torque numbers vs durability. In other words we could claim the transmission is capable of 1000 ft lbs of torque and in the fine print disclose it will last for half a mile at the torque figure. Customers need to be aware that the standard HP21 is rated at 450 nm, however this has a durability of 60,000 miles. It is clear that the stock transmission will cope with double its factory rating although its life expectancy is more like 20,000 miles those torque numbers.
BB: How soon will Nizpro be testing the software as thus far the 335i with Nizpro upgrades did not utilize the software in its 1/4 mile runs?
Nizpro: We actually have. We have track tested the car twice. Once using our upgraded transmission with Alpina for a base test data. 4 runs were recorded. We are not concerned with overall quarter mile times simply gear shift times for comparison, between calibrations. The second lot of testing using software changes were done the following weekend at a different track. The track had little grip on the day so the results were not really useful in terms of quarter times.
This is all good news. Nizpro is on schedule to release their product this year and they will not force you to bundle their hardware and software together.
Here are some additional details which should help get a better idea of what is involved.