NOS....wish i had one...
but too complicated to install and need to put in a switch for that...

on the other hand...Turbo Mag tested a ZEX nitroxide system on their project 5th gen...the ZEX kit did not utilize a switch to activate the system, rather it is rigged to the RPM gauge. once the engine pulls up beyond the threshold, it releases the funny gas automatically!!!

but i guess this set-up will result in even more frequent wait-in-the-line for the refill...=(

what do you guys think?

-peace
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NOS is a better quality system in my opinion. They have been around longer than zex and had more time to refine thier product.