Okay, so i was over at a car show this last Saturday and i met a Honda technician that had a 93 Civic SI with an ls swap, and we got to talking a little bit about my car, a 95 Cx hatch, with a stock 70 hp power plant, and he told me that if I went to a junkyard, grabbed an intake off of a 95 Dx and the ecu out of it, and plugged everything up that I would get the same amount of hp the dx has (102), because of the wider intake tubing and the computer.

Has anyone ever heard of this? Or do you think its bs?

 

dude listen a DX is the same thing almost man my 94 dx coupe stock motor felt like my brothers 95 cx with the stock motor but his car got almost 50mpg... so if i was you i would leave it stock unless you actuly swap/turbo the motor. g.l

 

It's not true. The CX has an 8-valve engine (D15B8), and the DX has a 16-valve engine (D15B7).

So regardless of what intake manifold and ECU you're running, you still have 8 less valves. That's a lot less air, that's able to get into the cylinders, which is going to equal less power. Even the upgraded intake manifold isn't going to help much, because the lack of valves is still going to decrease the amount of air.

Changing with ECU is going to increase the amount of fuel, which you don't need with the stock engine. It's just going to make you run rich, which will hurt power, as well as damage the engine over time.

There's absolutely no hope for that engine, performance wise. I own one myself. Either just drive it and enjoy the MPG, or swap the engine if you want power.

 

Thanks a lot for the info. I was thinking about the difference in valves.

I guess thats another, if it doesnt seem right, it probably isnt kinda things. lol.

And a cx doesnt get 50 mpg's. I drive mine like a grandma and im averaging about 41 mpg's.