Quote:
Originally Posted by GTIanZ28
Very cool. Crazy how they just build these things out of plastic now.
How exactly do you modify them? How much power is typically gained?
Also curious about the type of license plate bracket you will design this time around. Think a tow hook license plate bracket might work? Be nice to have one that is easily removable.
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The v6 intake has been made of a composite material starting with the LFX in 2012, the LLT engine from 10-11 was aluminum. The v8s have had composite intakes for far longer.
I'll modify by removing reachable obstructions, match the inlet to the throttle body bore, remove sharp edges and overhangs from the short turn radius on the runner, and fill whatever I can to reduce turbulence and increase velocity.
Typically on the LFX intakes I see about a 20% flow increase as tested through the intake itself on my flowbench. Out of the box, the LGX intake flows 10% better than a stock LFX intake, but about 10% worse than one of my modified LFX intakes. However, it appears that the potential for more is available out of a modified LGX intake manifold.
Below is a dyno graph from testing the LFX modified intake manifold with one of my intake spacers on a bone stock 2014 LFX Automatic that I had.
Blue line stock
Red line, added the intake spacer only
Maroon line, modified intake manifold and intake spacer.
No other modifications were made to the car.