Aftermarket Exhaust Installation Help

Topic: Aftermarket Exhaust Installation Help (Read 3022 times) previous topic - next topic

Aftermarket Exhaust Installation Help

Reply #30 – January 19, 2013, 10:20:14 PM

Got it FOE. Not the answer though. The lers have the greater losses not from restriction issues. By the way HP IS HP and the difference on the street is most definitely noticeable. By the way more and more manufacturers are eliminating lers and just use the cat as the ler. As far as sound if you read my post i clearly said if sound was an issue use lers. But the 2.3 with a full exhaust single in nature cat only is not loud by any means. Ok enough said. But that is why people have cars that outperform others. They realize exhaust tuning can net several HP gains. And substancial gains. Thanks for listening!

Aftermarket Exhaust Installation Help

Reply #31 – January 19, 2013, 10:36:22 PM

The worst lers bar none are as follows. The Thrush Turbo and Flow Master lers. This is a fact and we proved it. Just saying.

Aftermarket Exhaust Installation Help

Reply #32 – January 19, 2013, 11:13:06 PM

Anyone have a clip of just a cat

My car is so quiet it sounds like its powers by lithium ion battery's lol

Aftermarket Exhaust Installation Help

Reply #33 – January 20, 2013, 12:54:28 AM

Quote from: STANG8U;407524

Anyone have a clip of just a cat

My car is so quiet it sounds like its powers by lithium ion battery's lol

lmao that sucks... Mines just factory stock, it lollops like a v8 at idle but once it revs it doesn't make much noise. Hell the whizz of the turbo and the BOV is louder lol =[. But yeah we're talking street cars, if I could get away with a straight pipe I would because I love manly loud engines, but gotta keep it legal. No cat, but yes ler. Technically not legal, but my state doesn't have smog checks

Aftermarket Exhaust Installation Help

Reply #34 – January 20, 2013, 01:21:08 AM

I would never recommend a chambered ler to anyone. Straight through are best, but not all are equal. Turbos are only for the guy who wants a better quiet ler. Most turbo lers are garbage, so if thats your thing, do your homework. Mine is a daily driver so I'm running Dynomax Superturbos, just because my upstream is currently small (Mark VII stock h-pipe and stock HO headers) and I really hate drone. I'm gathering parts to make my headers and h-pipe bigger (down stream will come later) I'm going to send the headers to be ceramic coated and because, for budget reasons I'm going without cats, I'm thinking about wrapping the h-pipe to the balance tube. Tom recommend cats so ardently because the reaction creates heat downstream and acts as a scavenging aid and helps to keep velocity up. I'll be wrapping to try to get some of that effect and to keep the heat away from my trans.

Aftermarket Exhaust Installation Help

Reply #35 – January 20, 2013, 02:51:30 AM

Quote from: TheFoeYouKnow;407536

I would never recommend a chambered ler to anyone. Straight through are best, but not all are equal. Turbos are only for the guy who wants a better quiet ler. Most turbo lers are garbage, so if thats your thing, do your homework. Mine is a daily driver so I'm running Dynomax Superturbos, just because my upstream is currently small (Mark VII stock h-pipe and stock HO headers) and I really hate drone. I'm gathering parts to make my headers and h-pipe bigger (down stream will come later) I'm going to send the headers to be ceramic coated and because, for budget reasons I'm going without cats, I'm thinking about wrapping the h-pipe to the balance tube. Tom recommend cats so ardently because the reaction creates heat downstream and acts as a scavenging aid and helps to keep velocity up. I'll be wrapping to try to get some of that effect and to keep the heat away from my trans.

Yeah that's what I was thinking, chambered lers are garbage, and turbo lers are next to garbage. I work under cars for a living and you should see some of the trash they put on cars these days (newer volkswagen lers look like a freaking second gas tank).

Aftermarket Exhaust Installation Help

Reply #36 – January 20, 2013, 04:03:44 PM

I just got the car not long ago it has stock down pipe cat with dual flowmasters

I hate it!

I've Ben looking for the cheapest way to get the sound and power

I would love a strate 3" with a strate through ler but that would have to wait a while

Aftermarket Exhaust Installation Help

Reply #37 – January 20, 2013, 05:36:21 PM

Tom recommend cats so ardently because the reaction creates heat downstream and acts as a scavenging aid and helps to keep velocity up.

OK NOW YOU GET THE IDEA!!!

Running a to big of an exhaust hurts this and that is why pipe size is critical. The CAT makes the car emission legal and keeps the gases flowing. This is better than most people think. Actually a proper running car with a low cell count cat can net good HP gains. Thanks

Aftermarket Exhaust Installation Help

Reply #38 – January 20, 2013, 06:47:32 PM

Quote from: TOM Renzo;407575

Tom recommend cats so ardently because the reaction creates heat downstream and acts as a scavenging aid and helps to keep velocity up.

OK NOW YOU GET THE IDEA!!!

Running a to big of an exhaust hurts this and that is why pipe size is critical. The CAT makes the car emission legal and keeps the gases flowing. This is better than most people think. Actually a proper running car with a low cell count cat can net good HP gains. Thanks

Thanks man, you really know your stuff! Yeah I did some research and to me it looked like anything bigger than 3" on the 2.3 turbo was too much pipe. Hows a car sound with no ler and cat only though?

Aftermarket Exhaust Installation Help

Reply #39 – January 20, 2013, 07:43:28 PM

That's what I want to hear

It would be ez and cheap to keep the cat and have A ler shop just run a pipe off the cat

Aftermarket Exhaust Installation Help

Reply #40 – January 26, 2013, 09:06:52 PM

Easy Way To Estimate: Your intake system needs to flow 1.5 CFM per engine horsepower, and your exhaust system needs to flow 2.2 CFM per engine horsepower.

Good Way To Estimate: Take engine RPM x engine displacement, then divide by two. This is the intake volume. Use this same volume of air for the exhaust system, but then correct for thermal expansion (you need to know exhaust temps to figure things out).