This installment of Project Car Diaries is sponsored by WD-40 ® Brand. My 2006 Honda Civic Si had an Injen cold-air intake installed when I got it. This is a pretty well-known brand, in fact ...

Like the intakes, AEM makes the filters itself ... five times more often than your average commuter car. While the Civic Si makes 160 hp stock, we estimate this version is producing close to ...

Unveiled in November 2016 for the 2017 model year, the previous-generation Civic Si can be modified to almost ... Following the filter and intake manifold, you also need to change the original ...

When you think of the '06 Civic Si, it's unlikely you'll ... outfitted the Si with one of the most impressive intake manifolds we've tested on the K-series engine yet. Most importantly, we've ...

Happily, the Civic Si held its value very well ... As such, you're probably going to have to put up with a cold-air intake and an aftermarket shift knob at the very least. With such a broad ...

Where the standard coupe has a chrome piece and horizontal bars in the fascia's three lower air intakes, the Civic Si Coupe has a blacked out grille piece and a hexagonal insert in the center ...

Borrowing a fair bit from the Euro Type-R Civic, our Si uses a 2.0-liter engine with i-VTEC, a system that takes Honda's variable valve timing and lift system (VTEC) and further varies the intake ...

The 2017 Honda Civic Si, which will be available starting next ... which is limited to the intake camshaft and is always active, optimizing engine performance and efficiency at any given rpm ...