Their flow rates might be different but I believe they're the same dimensions

Yeah, im running 460s on top and 550s for secondary.. that won't get me too rough will it?

Is this n/a or turbo? If this is n/a, and you're using the factory ECU, you won't see any improvement by using larger injectors, it already runs pretty rich on factory settings.



Also, when you say "on top", do you mean the injectors that are on top? If so, those ARE the secondaries, the primaries are the ones under the intake manifold (assuming this is n/a, I don't know nuthin' 'bout turbo).

Yeah, this is NA, but I couldn't find a spot to buy more stock injectors, so sad pandas here.

Hmm interesting; having a hard time finding a gasket for the intake manifold too..

All you had to do was ask! I've got several stock injectors laying around, never could find anyone to buy them. Mazdatrix has gaskets (along with pretty much anything else you would ever need for your car).

Awesome man! But in other news, this is the gasket I need right? http://www.partsgeek.com/gbproducts/...ek+Google+Base

If you separated the upper intake manifold from the lower intake manifold, you need this gasket.

http://mazdatrix.com/pictures/c-intake/13-112A-N326.jpg



If you removed the lower intake manifold from the engine block, you need this gasket.

http://mazdatrix.com/pictures/c-intake/13-111A-N326.jpg



For these, I like to use non-permanent gasket sealant, because you're more than likely going to remove them again at some point while you own the car. I don't know what the pros think, but this allowed me to re-use them, they didn't fuse to the metal and rip to pieces next time I removed them.

Ive used silicone on mine with no issues removing later or vaccum leaks. Any local parts place can get you the gasket set and will sell the injector o-rings at not too much of a cost.

Ok, finally got some good weather comin this week, so nows a great time to get this job done. However, now that I'm about ready to pull the upper intake manifold off, it's like it's been welded together, which is highly frustrating. No matter how hard I yank and pull it seems like I'd be more likely to pull the whole engine than the manifold...

Make sure you've got all the bolts/nuts removed.



For the upper intake manifold, there should be the 5 (you can see their locations in the gasket pic above), and there should be one more out of the side of the manifold, facing the firewall. It hides from you, and I think it's holding on a hard vacuum line.



On the throttle body, there is a bracket holding it to the engine, I believe 2 bolts hold the throttle body to the bracket, the bracket is held to the engine with 1 bolt (this is where your infamous ECU ground is, clean that ground up while you're in there).