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Re: yea more air, give me more.. (archive)

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Posted by Paul E on June 16, 2000 at 11:09:25:

In Reply to: yea more air, give me more.. posted by fly on June 16, 2000 at 09:28:29:

: Some people do not believe raming outside air to your intake will not work, but through experiences I know that it does work.

: I also experimented all type of ram air a 4" duct from the fog and brake duct to my euro-box and also tried the cone filter too. So far, the best result is the 4" duct from the fog or the brake duct. Big improvement all-around. The cone filter, i lost tq. at at pick up and little gain at high speed. Now I am thinking about ducting from the front grille this weekend.

: I would like to see or hear more about your setup, please sent a pic.

I have a Dinan stage II Supercharger. In these setups, they relocate the K&N to behind the bumper and headlights, above the brake duct. I found that by cutting a 3.25" hole in the top of the brake duct, I could route flexible 3" diameter air duct hose from the mouth of the brakeduct, which fits perfectly, up through the hole, and aim it at the side of the cone. I also vented the foglight inlet. So now, outside air reaches the k&n through 3 sources: brake duct, foglight inlet, and gaps above the bumper. I found that without this ducting, the only air it was getting was from the gaps above the bumper and below the headlight lense. I felt a substantial increase in acceleration once I opened it up. I'll want to check the MAF and O2 sensors for confirmation, but I suspect approx 30-40 hp was gained this way. It would be alot less with a NA engine, but the blower really needs a big charge of air to compress, and the revised DME software makes you pay a high performance penalty, by retarding the timing. Under boost, the software Already retards the timing, so the combined effect produces a measurable loss/gain. Still, I dont think its so much the effect of ram air, especially with the blower, as it is the introduction of denser air.

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