Well this is only me, my 4/4 Sigma is my fiifth Mog after three Roadsters and a Plus4 Super Sport since 11 years. I own her since 2 years and have done almost 27.000 km at that time. She is a keeper. Some mods are inevitable but the fun is to grow with the mods. Don't order her with all the mods done. My gap of experience is the standard Plus4 and the narrow body Plus 4, certainly great cars .Give them also a test drive as others recommend as well.
But for me the lightweight of the Sigma engine as well as the consecutive lightweight well balanced package it really a joy.
After changing for a sports manifold I have experienced and tested a bit with the intake. Next step will be to change the final gear ratio and do some other mods which are minor. Start with brake reaction bars (cheap and effective) and an urgent advice, change the standard tyres against different make but keep the same narrow dimensions.
This sounds like the standard 4/4 is not drivable, no...the opposite is the truth. My personal experience is that I had to mature before I could say the 4/4 is my choice.
The funny thing is that because of the lightweight even a slight increase in power is immediately to feel. I.e. swapping the standard air filter against a K&N type. After all the feel of this narrow car is very enjoyable
