2.5 vs 3 inch exhaust on an N/A
05-07-2011, 01:24 AM
#16
Rennlist Member
I'm curious on the muffler too. The PO put a muffler and tip on my car and I dislike driving it on the interstate. It's LOUD and bugs me. I was thinking about just having a resonator put in but I'm always open to ideas.
05-07-2011, 01:38 AM
#17
Rennlist Member
My problem is, that if there really is no gain from a bigger exhaust, and you may actually lose power, why would reputable companies like Lindsey and MSDS even make or sell these products? That part doesnt really add up, but I do understand that there is such a thing as TOO big, and that could cause severe problems.
Would it help anyone if I got a before and after dyno test? My car is completely bone stock, minus the flywheel and throttle cam :b Or if anyone has done this all ready, can they post results? I trust all of you guys, and I understand that going bigger could cause problems, but I wouldn't mind seeing the cold hard facts.
Also, Fun944 and white924s, which magnaflow muffler are you running?
Would it help anyone if I got a before and after dyno test? My car is completely bone stock, minus the flywheel and throttle cam :b Or if anyone has done this all ready, can they post results? I trust all of you guys, and I understand that going bigger could cause problems, but I wouldn't mind seeing the cold hard facts.
Also, Fun944 and white924s, which magnaflow muffler are you running?
)Also, with 25 year old engines, internal parts get worn out, so in many cases, the best thing you can do to get more power is simply rebuild the engine so that it is running to spec.
05-07-2011, 05:08 PM
#19
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....when you get too BIG you lose velocity and therefore the ability of the exhaust system to SUCK the air out of the cylinders. So it requires the engine to work marginally harder to PUSH the gas out of the cylinders and through the exhaust system. If you get too SMALL it will give you more velocity but it will be restrictive and your volume will be way down. Then the air in the cylinders is backed up and again the engine has to force it out of the cylinder and through the exhaust.
Think of syphoning gas.. with a narrow hose you can easily get suction, it's just going to take forever to flow through it. With a huge hose you'll be hard pressed to get suction but if you did you'll flow a lot of fluid.
Some one please feel free to correct me.
in other words you read post # 6 but you wanted to get your post count up.
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