Join Date: Feb 2007
Location: Northridge, California
The ECU balances the fuel and air level based on the exhaust temperature. If the intake is getting more air, the ECU will be happy to add more fuel. It does the same thing with mild NOS setups as long as you don't exceed the 100% capacity of the injectors.
You may be right about increased air temperatures if the car is sitting still. However, once the car is moving at 40 MPH or better, the airflow through the intakes is gale force, blowing all the hot air through.
I wish I had a dyno to prove it, but you really can feel the difference. The beauty of it, is the hole is up under the fender (in all three cars) and the smog inspector cannot see the change. If you read a lot of the automotive journals you find out that some manufacturers actually restrict the intakes to reduce power to make warrenty items (like transmissions) last longer. I don't know if Lotus is one of these. Honestly, the Lotus intake tube is not so bad. I would guess the snorkel is 1.75 inches inside diameter. The 3.0 liter Jaguar was probably 1.5 inches and the 2.3 liter Altima about 1.25 inches. However, more is always better, right?
Last edited by neckstrap; 03-26-2007 at 06:04 PM.