Hi John,
We are the Australian dealers for CPI Tuning and offer a very similar but fully track and road tested units from well respected technicians and tuners from South Africa. With proven results on the dyno, in everyday driving and on the quarter mile (if that's what you are looking for)
CPI Tuning
PNP units explained so you have more information to make the right decision.cpi-ecu-tuning-explained
To answer your question. PNP units do work and I am yet to find any ECU tuners that can find any fault with them. At the end of the day the unit is controlling signals just like any ECU tune. The gains are also proven and no one can argue that. I cannot comment on the brand above, but our units are fully configurable.. they are not just a bunch of resistors as some other ECU tuning companies make you believe. See link above.
Our pricing at present is not quite locked in so if you would like more information and to see how we can help you, please contact us.
Thanks
AK
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