High performance cats

[yariSB86]

Anyone know if something like this is worth it?
That picture on the summit site is accurate to what the high flow cat looks like.
magnaflow cat (http://summitracing.com/parts/mpe-49470/overview/year/2007/make/toyota/model/yaris)

[G-Ammo]

I would like to konw too :)

[TPA5]

General consensus has seemed to be that high-slow cats don't add any appreciable difference for the cost. Of course arguments go both ways, so whether they do or not is hard to say.

[yariSB86]

Well I ordered one. So I'll let you guys know how everything goes when I start work on it.

[cali yaris]

Looks like an OEM replacement. What is the intended purpose? Did you fail a smog test or something?

[kou]

Cancel that order if you can. You can get your entire exhaust done for that money.

[yariSB86]

They market it as a high performance cat, so I called magnaflow and spoke with a mech about its specs. They say it is high flow, more than oem.

My plan is to install this, have an exhaust shop fab the rest of the pipe with 2" tubing to connect to my dc sports axle back.

@Garm - no I did not fail emissions test. Just looking to upgrade my exhaust. I tried to find just a high flow cat to replace and delete oem ones but to no avail. Only cat sold online for the yaris I found were just oem replacements.

[tooter]

It looks like they did a very good job at locating all of the exhaust components in the same places so it should fit like a glove.:thumbsup: Is the diameter of the exhaust pipe any larger with the Magnaflow assembly?

You could likely sell your stock exhaust to help recover some of the cost. Whenever I replace anything with something better I always sell off the stock stuff. :smile:

[cali yaris]

^ I would never do that unless I tested at a smog station first. If the "upgraded" cats fail, you'll be REALLY glad you have your stock exhaust on hand someday.

Stock cats are EXPENSIVE to replace. Don't sell your stock midpipe if you have room to store it!

[tooter]

They market it as a high performance cat, so I called magnaflow and spoke with a mech about its specs. They say it is high flow, more than oem.

My plan is to install this, have an exhaust shop fab the rest of the pipe with 2" tubing to connect to my dc sports axle back.

That sounds like a good idea as I believe the exhaust pipe gets smaller after the cat but before the axleback. I'll bet that Magnaflow has already tested their exhaust on a Yaris and already knows that it passes emissions testing, or by law they would have to put a disclaimer on their product just like for any other non compliant "race only" accessory.

If you're not sure, I'd simply call them and ask. :smile:

[Kaotic Lazagna]

That sounds like a good idea as I believe the exhaust pipe gets smaller after the cat but before the axleback. I'll bet that Magnaflow has already tested their exhaust on a Yaris and already knows that it passes emissions testing, or by law they would have to put a disclaimer on their product just like for any other non compliant "race only" accessory.

If you're not sure, I'd simply call them and ask. :smile:

I'm not 100%, but I thought any high flow cat was illegal in Cali?

[Kaotic Lazagna]

Actually just clicked on the OP's link. WOWZER, that is expensive. Also, it says "no" next to "California legal." At least the OP is not in Cali. lol

[tooter]

Everything is illegal in California. :laugh:

[cali yaris]

^ This product will absolutely NOT be CARB legal in California. Save your old parts.

[Kaotic Lazagna]

Everything is illegal in California. :laugh:

Yeah, sucks :frown:

Intakes, headers, turbos, s/c's...everything! I was (illegally) pulled over for having a "modified exhaust" back when I had my GTI (it was just an axle back)...I think I pissed off the CHP officer when I told her that the vehicle code says it's okay to have a modified exhaust as long as it's below 95dB. Her snooty response, "I'm not pulling you over for the noise, I'm pulling you over for the modified exhaust." SMH...yeah, and let every Mustang, Camero, and any American pickup truck with "modified exhausts" get away from something that isn't even illegal to begin with. :mad: /rant

[cali yaris]

^ Unfortunately, the Vehicle Code includes that a modified exhaust cannot make an "unusual or excessive" sound either, this is exclusive of the 95dB restriction. This gives the officer the legal right to ticket you for "modified exhaust" at their discretion, even if your sound level is within the law.

Modify your car, take your chances, keep your old parts.

[Kaotic Lazagna]

Doesn't that apply to whistle tips (has its own section).




27151. (a) No person shall modify the exhaust system of a motor vehicle in a manner which will amplify or increase the noise emitted by the motor of the vehicle so that the vehicle is not in compliance with the provisions of Section 27150 or exceeds the noise limits established for the type of vehicle in Article 2.5 (commencing with Section 27200). No person shall operate a motor vehicle with an exhaust system so modified.

(b) For the purposes of exhaust systems installed on motor vehicles with a manufacturer's gross vehicle weight rating of less than 6,000 pounds, other than motorcycles, a sound level of 95 dbA or less, when tested in accordance with Society of Automotive Engineers Standard J1169 May 1998, complies with this section. Motor vehicle exhaust systems or parts thereof include, but are not limited to, nonoriginal exhaust equipment.

27150.2.
(b) A certificate of compliance for a vehicular exhaust system shall be issued pursuant to subdivision (a) if the vehicle complies with Sections 27150 and 27151. Exhaust systems installed on motor vehicles, other than motorcycles, with a manufacturer's gross vehicle weight rating of less than 6,000 pounds comply with Sections 27150 and 27151 if they emit no more than 95 dbA when tested in accordance with Society of Automotive Engineers Standard J1169 May 1998.



I'm not saying to not keep your old parts since I keep all mine. lol

[Kaotic Lazagna]

But yeah, I guess CHP can pull over anyone they want...really up to the driver to fight the case if it really is wrong. I looked it up more...away from the vehicle code. The "unusual or excessive" part is left to interpretation of the officer, but in my GTI case, she admitted that her pulling me over had nothing to do with the noise/sound. Eh, whatever, it was in the past. Since then, I just stayed away from canister style mufflers and stuck with clam shell types with OEM (not for the car, just in general) looking style tips.

[malibuguy]

Anyone know if something like this is worth it?
That picture on the summit site is accurate to what the high flow cat looks like.
magnaflow cat (http://summitracing.com/parts/mpe-49470/overview/year/2007/make/toyota/model/yaris)

Thats a stock replacement cat, 400cell per square inch core just like stock.

Stock cats vs. a single 100cell race cat on our cars is worth .1-.15 sec / .5-.75mph in the 1/4 mile...i just proved it yesterday

[yariSB86]

Thanks Malibu, canceled the order. It's not what I'm looking for.

[malibuguy]

no problem

its a common 'marketing' flaw with Magnaflow converters that they are all 'high flow' when they are not. They just starting making universal high flow 300cell per square inch about a year/1.5 ago. Which is a mild upgrade over stock, but not much & it will need to be welded in.

alot of new cars now even feature higher rated cores from the factory, with 600, 800, 1200 cpsi to which a "standard" 400cpsi core would then be considered "high flow". but in terms of our yaris, they use 400cpsi stock.

My shop we carry 100, 200 & 300cpsi higher flowing converters & i show people the difference & they are usually floored!

[cali yaris]

My shop we carry 100, 200 & 300cpsi higher flowing converters & i show people the difference & they are usually floored!

Especially when they floor it? :laugh:

[malibuguy]

Yep! It was a semi-pun ;)

[TOLMACH]

no problem

its a common 'marketing' flaw with Magnaflow converters that they are all 'high flow' when they are not. They just starting making universal high flow 300cell per square inch about a year/1.5 ago. Which is a mild upgrade over stock, but not much & it will need to be welded in.

alot of new cars now even feature higher rated cores from the factory, with 600, 800, 1200 cpsi to which a "standard" 400cpsi core would then be considered "high flow". but in terms of our yaris, they use 400cpsi stock.

My shop we carry 100, 200 & 300cpsi higher flowing converters & i show people the difference & they are usually floored!


I wish you were closer to BC canada ((((((((

[yariSB86]

So Malibu, if I went with a 100 cpsi at 4" diameter all connected with 2" pipping, would that work?

[tooter]

I wish you were closer to BC canada ((((((((

...and I wish that malibuguy was closer to Malibu.

[yariSB86]

My thought is to replace the first cat with one mentioned above, delete second cat and resonator. Have all connected with 2" pipping. Stopping where my axle back is.

[malibuguy]

That is exactly what I used to have on my car. You will also need to space out the rear o2 sensor or it will trip a p0420 code

[1.5]

I just had a custom 2.25" cat back built for wayy less than that and It gave me great noticeable gains and I got to keep my cat

[nookandcrannycar]

But yeah, I guess CHP can pull over anyone they want...really up to the driver to fight the case if it really is wrong. I looked it up more...away from the vehicle code. The "unusual or excessive" part is left to interpretation of the officer, but in my GTI case, she admitted that her pulling me over had nothing to do with the noise/sound. Eh, whatever, it was in the past. Since then, I just stayed away from canister style mufflers and stuck with clam shell types with OEM (not for the car, just in general) looking style tips.

OMG, SMH, SMH. When I read the world 'unusual' from the statute on Cali Yaris' post #16 I thought -- OMG, what nanny state wording...only in CA, or NY, or maybe IL. What you uncovered is beyond the pale. Along this particular avenue of policy, IMO, nothing should be left open to interpretation by the officer. As long as it passes the emissions standards, noise (unless there is a concern about unsafe mounting) should be the only thing that matters. IMO, your officer's snooty response belies a lack of appreciation for how good she has it relative to other law enforcement officers. LEOs in many other states (who, IMO, often exhibit far more professionalism) will never have close to the salary, benefits, and pensions that many LEOs in California do.