After 2 and a half years of development, testing, track time and constant comparison with our previous engines, we can finally say it: the new HASI Tuned engine line dedicated to the top 1/8 on-road category is here: MODIFICATO.

This update is not about a single model — it covers the entire range: ABC and AAC versions, both 7-port and 9-port.

The cylinder has been completely redesigned, with all ports reconfigured to achieve an even better balance between performance and fuel consumption.

A development made to work properly both with 16% and 25% nitro fuels, without forcing the driver into compromises.
The piston has also been totally redesigned, and most importantly the piston/cylinder matching process is now done with a new methodology, delivering a more consistent and precise performance. The crankshaft has been revised in its balancing, while keeping the timing unchanged — because the base was already proven and effective. On the cooling head, the graphics have been only minimally updated, but the real change is in the new design: a new structure that brings two concrete advantages.

➡️ a 19% weight reduction compared to the previous version
➡️ a noticeable improvement in the warm-up phase, especially on AAC engines, without compromising cooling efficiency even in high temperature conditions.

Finally, the carburettor has been updated as well: the high-speed needle was already the latest one used on the most recent 9R, but we also revised the sealing, replacing the fuel-contact gasket with a specific nitromethane-resistant material.

To get the best out of this engine, we recommend running it with a V-Fuel backplate and an Ultra-Low venturi.
The ideal configuration is 8.5 mm, while for those who want the absolute maximum performance, the reference becomes the 9 mm.