[[email protected]]

SHORT AIR INTAKE (IS1341)

COLD AIR INTAKE (IS1341)

 

[anticmos]

well that looks pretty impressive.

 

[syroyizhka]

so how come the VT only produces 165 hp , wtf happend to 201 ?

 

[The Mackies]

its 201 at the engine, these are taken at the wheels.

 

[Drewfusss]

Is that an auto trans? Also what is up with the massive power drop between 5K and 6K?

 

[HelloImErwin]

Is that an auto trans? Also what is up with the massive power drop between 5K and 6K?

That was taken from my car - Auto VT. The power drop is common on first gen production vehicles. This is probably from a bad camshaft VVT tuning from Hyundai. It can be dialed out with proper engine tuning. Hopefully someone comes out with a re-flash for this car and tunes the engine better.

 

[anticmos]

Oh the temp difference... is that ambient or intake?

 

[Noeskape]

Another temp question: shouldn't the cai cause the temp to be cooler than stock? Why is it about 20 degrees warmer?

 

[1.6 T-GDI]

CAI looks to have slightly better performance than the SRI.. I still might go SRI though just because it floods here easily and rains a lot... still paranoid about hydrolocking. I've seen it happen here before too much.

 

[HelloImErwin]

The temperature listed on the dyno is ambient temperature. The actual variance between sri and cAi is about 5 degrees. There is a misconception that horsepower is increased due to drawing in cold air VS warm air into the engine. The principle behind a cold air intake is that cooler air has a higher density, thus containing more oxygen per volume unit than warmer air, which everyone understands but is only half of the truth. Tube length, diameter, radius, etc.etc. play a huge roll in overall power gains. Generally longer tubes will produce more power than a shorter tube when the diameter is matched with the flow characteristics of the engine.

 

[Wftrudell]

Not to bring back an old thread, but I am big into finding out true stock numbers at the wheels on different type of dynos and fuels. My thing is why would you do pulls in second or third? I would imagine our closest gear in this car to 1:1 is fourth? Wouldn't that be the most accurate. Lower gears tend to be read higher? When on the dyno what rpm should you measure from and what rpm should you mash the throttle at? I would gather 2800?

 

[Gaijiin]

Not to bring back an old thread, but I am big into finding out true stock numbers at the wheels on different type of dynos and fuels. My thing is why would you do pulls in second or third? I would imagine our closest gear in this car to 1:1 is fourth? Wouldn't that be the most accurate. Lower gears tend to be read higher? When on the dyno what rpm should you measure from and what rpm should you mash the throttle at? I would gather 2800?

They wanted higher numbers to sell intakes.

For an accurate read,....40 mph on tach...third to fourth gear, pull in fourth."Roll on".