OBX Throttle Body Spacer DSM Eclipse NT 420A 95-99

[fullmoon]

Yes spacers work it works best in the midrange and in cold weather gains about 1-2 hp.
But look on the brightside it's 1-2 more hp than you had before.

 

[EDM95]

So this is just for pretty then?
OBX Throttle Body Spacer DSM Eclipse NT 420A 95-99:eBay Motors (item 370227939134 end time Jul-17-09 16:04:36 PDT)

 

[Fotowntalon]

I'm still undecided about this, on one hand, you want to get as much air into the engine as quick as possible, and I see the swirl as turbulence and could see that actually sucking out HP. Then again water needs to swirl to get into a drain quicker, also the extra divider would help cool the air slightly. Yet water isnt wair, and the reason water needs the swirl is to let out air in its passing, what does air need to let out? I'm not an air velocity and fluid dynamics major so this is all speculation of course, personally I wouldnt buy it without a couple dyno tests sense it could potentially sap HP instead of add it.

 

[VelocitàPaola]

I'm still undecided about this, on one hand, you want to get as much air into the engine as quick as possible, and I see the swirl as turbulence and could see that actually sucking out HP. Then again water needs to swirl to get into a drain quicker, also the extra divider would help cool the air slightly. Yet water isnt wair, and the reason water needs the swirl is to let out air in its passing, what does air need to let out? I'm not an air velocity and fluid dynamics major so this is all speculation of course, personally I wouldnt buy it without a couple dyno tests sense it could potentially sap HP instead of add it.

Fluid flow is incredibly difficult to visualize. You can't really determine how a shape will influence flow just by looking at it. There are too many other factors to take into account. The only real way to approach this problem, without empirically testing it of course, is to perform a detailed analysis using computational fluid dynamics.

As a rule of thumb, however, you want less turbulent, more laminar flow before air meets fuel. In general, tubing with square and rectangular cross sections keep laminar fluid flow better than tubing with a circular cross section. Furthermore, rough textures are obviously more prone to creating turbulence.

Plena in carbureted cars tend to have rough interior textures to purposefully create turbulence and discourage the fuel from pooling. The interior textures of any car with port injected EFI systems, on the other hand, should be rather smooth. Turbulence of any kind before the fuel injectors is a bad thing.

 

[DSMDEMON93]

Well I can't really see what big impact a tiny spacer would have on a N/T eclipse. I don't see the practicality of a tiny metal spacer improving air flow that dramactically to increase hp. I mean once the fuel/air combusts it combusts. Most likely you could squeeze 1-2hp at max on a 4cyl. My bud's buttstang doesn't even push that much out with his spacer installed too.

 

[RoninEclipse2G]

Holy crap! Are people seriously still talking about these 2 years later?????

Products like this are more intended to separate the uneducated tuner from his hard-earned money.

this is the only thing ANYONE should read in this whole thread.

Much better money could be spent on opening up the throttle body and intake manifold to flow better.

 

[Hans_O_Matic]

i don't see how this would increase hp... i mean really if the only thing this does is create extra distance between the tb and intake manifold... all it does is create extra distance.... so if i extend my CAI in my eclipse by 3" will it give me the same effect??? no!

. this is an interesting thread. Wouldnt it actually increase manifold volume, because its post throttle body?