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project diffuser... if you've made one, come on in!
Made some brackets out of aluminum and attached them to the the frame rails where the orig exhaust hangers went. I just need some longer "plastic rivets" or push-fasteners to secure the diffuser to the bumper.
Driver side bracket:
Passenger side bracket:
The completed project:
Driver side bracket:
Passenger side bracket:
The completed project:
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Verdad Gallardo Right now it is dumped before the axle. I am building a 4" over axle exhaust which will dump right after it bends over the axle and before the diffuser
Well I finally had a chance to take it up to 90mph. Car feels very stable at speed. It seems from 65+ it almost pushes the car forward.
Well I finally had a chance to take it up to 90mph. Car feels very stable at speed. It seems from 65+ it almost pushes the car forward.
Last edited by InsaneAuto86; May 13, 2010 at 09:33 AM.
Ive always wanted to do this with my T/A...except I imagined it coming from the gas tank, under the muffler and right after the muffler bending up to the rear bumper, then having a couple fins that are the height diff of from the muffler to the back bumper. And have it even across the entire back bumper and under the tips to "enclose" them in, like some AMG mercedes, Bentleys and so on and so forth have. Anyone good at photoshop? lol
Your fab looks really good though. This thread is about 7 months old, anything new?
Your fab looks really good though. This thread is about 7 months old, anything new?
Car has been in storage since I got married and moved in June.
Will be a stock LQ9 with .030 milled L92 heads, LS3 intake and a healthy cam. Build will start as soon as my LT1 sells!
Yup!! 
Dont worry, I'm dropping a fuel cell in the trunk and putting a borla xr-1 race muffler with 4" piping in place of the stock fuel tank. The diffuser will tie everything in very nicely! Pics to come when the engine build starts!
Just waiting to sell this LT1 and the demolition/reconstruction begins! 
Will be a stock LQ9 with .030 milled L92 heads, LS3 intake and a healthy cam. Build will start as soon as my LT1 sells!
Dont worry, I'm dropping a fuel cell in the trunk and putting a borla xr-1 race muffler with 4" piping in place of the stock fuel tank. The diffuser will tie everything in very nicely! Pics to come when the engine build starts! 
by creating an aero problem I am referring to the fast air under the car creating lift in the rear. We already have a light rear end stock, by creating a "lift" from faster air moving under it you're making the rear even lighter from aero. Adding a spoiler like one from LG or ACP would solve that problem. The parachute effect you're speaking about that we have from the factory actually helps keep the rear end planted by catching air in there; the opposite of what you will be doing with a diffuser..