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As far as I know all Si's are built at Honda Canada in Alliston.

Changes the fulcrum which makes the bottom part move more when the top is moved, its science.

We consider the bottom end the whole short block here in my area as well when it comes to 4 strokes. Top end would be head and valve train. 2 strokes here the bottom end would be crank, rod, bearings and top end is piston, rings, wrist pin.

I raced a 2008 CSX type S (canadian model only but same as si) stock vs stock and beat it but barely. It was from about a 10km/h roll.

Yup, z3 gasket fit up no problem. No welding required. Just open up the hole on the manifold and gasket a little to match the block or if you want to weld the manifold and re-drill. I wouldn't be too worried about coolant flow through there anyway because all its doing is flowing coolant to...

The coolant port on the throttle body side of the IM is different but if you use a hondata gasket from the older K engine it won't leak and no welding is required. I was thinking the same thing, about welding it then drilling it out in the right spot but then thought about using the older...

I'm waiting for flashpro to do mine. No point in doing it if you can't tune it properly for the new IM.

Mine's "the fast car", my wife has a fit. :-) We are kind of boring when it comes to naming our cars...

That's what I'm waiting for, I have an rbc manifold and aem fuel rail test mounted on a z7 on the floor of our shop right now. I'm just waiting for flashpro to come out so I can tune it after.

That's HPD not hfp, I'm pretty sure that you would need to open an account with HPD to get parts from them.

Finally had some time to paint my CSX rims red and put them on.

From what I've been told by the guys in product engineering the rear spoiler on the Si sedan will not generate downforce but its main function is to break the air off the car and reduce lift. If the rear spoiler wasn't there, at higher speeds the round area at the rear of the trunk would...

Ya basically from what I've heard they put it in to remove the slight rich point when the throttle closes and help with the emmisions rating.

I'm not saying that you aren't right but some people just prefer a supercharger and they are "safer" boost because you don't have to worry about a boost spike if there is a wastegate failure or if you use a cheap one. A supercharger will only supply soo much boost and there are less components...

That car looks like a 12 to me.... It doesn't bother me that the 13 will look different, just means I have a "limited production run" car. Lol

Definitely, I'm going with the full race kit or maybe peice together my own kit in a couple years when my warranty is up. I'm in the same boat as far as the making my si mid to high 12s versus just buying a "fast" car. You get a sense of accomplishment.

I have a friend with a jackson racing supercharger on his RSX, nothing but problems with it and he wants to go to turbo now and ditch the supercharger. Chances of broken axles etc are the same with both supercharger and turbo, all depends on power level. I do agree with the boost leak thing...

If you aren't mechanically inclined I wouldn't do either, superchargers require just about as much maintenance as supercharger. Just stay NA with bolt ons.

IMO it doesn't make a great race engine unless you want to turbo it.

HPD doesn't offer a "high flow cylinder head" but what they do offer and we have sitting in the shop waiting to go into our new car is a header for an engine with K20/24A head so people who would rather run that setup can. Also when you buy an HPD race engine it is an A2. That header is the...