Less restriction in your exhaust. Better sound too, 20 min install, no cost!!!
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From: SARASOTA, FLORIDA
Video of Greg's Pressure Relief Sound Holes G37s coupe
Complete the install with a high temp exhaust paint.
I just saved you close to a 1000 bucks!!! Spend it somewhere else.
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From: SARASOTA, FLORIDA
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From: SARASOTA, FLORIDA
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From: SARASOTA, FLORIDA
Hey Greg quick question. Why didn't you just put some washers in between the flange plates that hold the muffler to the mid-pipe? A couple of washers would give you the same overall aperture, would be tunable and wouldn't stick out the tips that much. Plus its reversible.
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Don't flame on the guy if he wants to be creative. It's true that the muffler on our 40k + car is very restictive, but Nissan designed it that way so it can be DOT/EPA APPROVED. who are we to judge if he wants to drill holes on his car right?
I wonder though, a 1.5inch exhaust piping with very restrictive resonators from factory can actually make 12hp without the muffler. I thinking like the washer idea from deiseldoug, maybe I'll try it
I had an exhaust leak once... It sounded exoticly horrible I wonder how two exhaust leaks will sound
Personally, if I can't afford to buy a better looking, dyno proven exhaust, I'll just leave my 43k g37 alone.
I wonder though, a 1.5inch exhaust piping with very restrictive resonators from factory can actually make 12hp without the muffler. I thinking like the washer idea from deiseldoug, maybe I'll try it
I had an exhaust leak once... It sounded exoticly horrible
I wonder how two exhaust leaks will sound Personally, if I can't afford to buy a better looking, dyno proven exhaust, I'll just leave my 43k g37 alone.
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From: SARASOTA, FLORIDA
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From: SARASOTA, FLORIDA
Drilled exhaust video by greg lecewicz
So here it is. Now you can say more about the project.
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Last edited by Black Betty; Feb 18, 2010 at 07:08 PM. Reason: embedded the video
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I'd take my car to a machine shop and have him weld that back to stock, you did make it louder true, but the tone has become worse.
I don't understand how you expect to see gains, the restriction in our exhaust system are the cats, the thin diameter of the piping and the y-pipe. What you did was attempt to bypass the mufflers by creating an even more restricted hole!
Apart from the fact that it didn't cost much to do, I don't see any win aspect in your project, but that's just my opinion.
I don't understand how you expect to see gains, the restriction in our exhaust system are the cats, the thin diameter of the piping and the y-pipe. What you did was attempt to bypass the mufflers by creating an even more restricted hole!
Apart from the fact that it didn't cost much to do, I don't see any win aspect in your project, but that's just my opinion.
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From: SARASOTA, FLORIDA
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From: SARASOTA, FLORIDA
LET PEOPLE DECIDE !!!!
YouTube - Drilled muffler pipes Infiniti G37s coupe
I'd take my car to a machine shop and have him weld that back to stock, you did make it louder true, but the tone has become worse.
I don't understand how you expect to see gains, the restriction in our exhaust system are the cats, the thin diameter of the piping and the y-pipe. What you did was attempt to bypass the mufflers by creating an even more restricted hole!
Apart from the fact that it didn't cost much to do, I don't see any win aspect in your project, but that's just my opinion.
I don't understand how you expect to see gains, the restriction in our exhaust system are the cats, the thin diameter of the piping and the y-pipe. What you did was attempt to bypass the mufflers by creating an even more restricted hole!
Apart from the fact that it didn't cost much to do, I don't see any win aspect in your project, but that's just my opinion.
I agree, it sounds like the stock exhaust, maybe a little deeper sounding. My concern is HP gain, I dont care to much for sound, (as long as it doesnt attract the cops). I want to see HP gains.