Does PrecisionMuffler plan on makeing a street legal cat back with all the cats intact? And what about rx191's claim that the magnaflow actually causes power loss? Have you dyno'd your products? Where are the results?

 

we cannot make a smog legal one because there is no purpose to making an exact replacement for the system. You are better off using the stock system, if you don't want the cat back we designed. Meaning:We could make a legal design. BUT there would be no HP gain at all.

 

Stylis...

any plan on making dual exhaust for the tC? it doesn't have to be catback... rather axle back would be fine. I noticed that the tC has a fairly large canister (cylinder too). It would be an easy mod to add another exhaust pipe on the left of the canister since the canister lies horizontally... just a suggestion.

 

I really wanted to try the dual exhaust on the tC just like the MR2 style, but the frame of the car lowers the pipe. And than after that there is not enough room for dual mufflers after the pipe come back up after the frame. If the frame wasn't so low I would have been able to make the dual exhaust set-up.

 

OMG... so much arrogance in this one topic... look Stylis/Gabe has been a member of the site for a long long time, as long as I have but apparently also is much more of a participant (posts count, site sponsor, MODERATOR and everything else he does on this site)

anyway, he isn't trying to sell you snake oil, he's done a dyno on his own xB with an intake and the manifold back exhaust (which includes a high flow cat and 2 1/4" piping). It gained him about 8 hp over the baseline of a completely stock xB which puts down 93hp to the wheels (disclaimer: on the dyno we used, at our specific time, at our specific weather blah blah blah)

the tC is a slightly different animal, but engines being engines there are certain things that apply... the whole concept of back pressure is a myth.

What you need in an actual performance exhaust is flow, and the way you get flow is by a careful balance of chemistry... high school chemistry had a few gas laws thrown in there, a few of which include when a gas expands it cools (which is how A/Cs work) and when something cools it becomes more dense (i.e. water vapor to water) so for a given amount of space a cooler gas weighs more than a hot gas, so which do you think is easier to move, something heavier or something lighter?

So the idea becomes to keep the gas hot, which usually means keep the pressure on it, but there's one problem, if this were actually true we would all have exhausts made of metal straws but we don't. The reason why is you can go down too far and create restrictions which make it harder for the old air pump (the engine is just a big freaking air pump) to push the exhaust out which is the goal because having exhaust in the engine is bad for performance.

what we end up with is Toyota/Scion putting out engines that aren't exactly optimal because it's cheaper to make engines less powerful and it gives better gas mileage and better emissions and so on and so forth... what an after market exhaust system does is create better performance and/or sound or look for your car.

hope this clarifies it all for most people.. .and one other thing, remember sound and noise levels are VERY subjective. Gabe thinks some things are loud, I don't... oh well, it's all opinion since it is next to impossible to model everyone's ears to show how loud they'll perceive something to be...

 

i heard the trd muffler the other day on a tc it sounds so sweet.. i havent heard the others yet but just from hearing the trd one its not annoying or anything nice and sweet tone..

 

magnaflow does make the mufflers for trd. stylis also makes a good product that is affordable, so save the money and go with his.

 

How picky are cops on loudness? Anybody that has the catback find it not worth it?

 

I thought the TRD system for the tC was made by Borla?

 

First of all, Borla makes the TRD Muffler..and Second the Axle Back that Stylis is selling is cheaper than the TRD but the Cat back is 395 + 45 (Shipping) + Insurance. Thats the quote I got from Stylis himself..

So basically its a extra 50 dollars for the catback..not back.. Cause the TRD is 395 Shipped from McGeorgeParts.com.

Im still thinking about it..I wish I had some Dyno Charts!!!!!!!!!!!!

 

Whats the best sounding on the tC? Sick of it sounding like a golfcart, but don't want it to sound like a fricken rice runner- but I still want definition and sound. Which one should I go with?

 

Dude honestly They both sounds ____ing awesome if they didnt I wouldnt have posted this thread..

Im just thinking which is better 2 get. TRD is only a Axle back but the Magnaflow is a Catback. for the same price.

Im ordering the MagnaFlow Cat-back in a week. and Im gonna put it on my self. I'll let ya'll know how it goes..

Just dont wanna be the 100th person 2 have TRD Exhuast..I'd rather go original and still have more HP than the TRD offers.

BTW I'll have PLENTY of pics of the Install dont U worry!!

 

Sounds good. Pics are always good.

 

I can't wait to see how it goes for you. Gabe makes a very good product for the money and there's no reason to not expect the engine to respond with improved performance and sound. Enjoy!

 

Yeah Im excited I bought the MagnaFlow Catback from Stylis Last week, He said I should get it Thursday..So Check back during the weekend and There will be pics of the Install!!

Soon 2 be the First Scion TC MagnaFlow Catback Owner in OK

 

Thats gonna be two firsts for us in Oaklahoma! We have the first xA in OK with an axle back and now the first exhaust set-up on a tC in OK!! :D ScionTCTrav I am glad we were able to take care of you.

 

Thanks man, I cant wait for it 2 come in, Be shure 2 send me a tracking number if you can?!

Im totally pumped..I cant stand the sound of a stock exhuast, and w/ the Catback hopefully I'll get about 5 more HP added.

 

stylis-

what size pipe is used on your cat back? is it the same or larger than stock?

if it is the same size as stock what would be the point? not changing the pipe size will yield the same results as only switching the muffler out.

if it is larger, how can you say that a xle back wont yield much over a cat back? there would be more pipe that is of larger diameter meaning slightly better air flow.

you also say that leaving the sec cat and doing a cat back wont improve anything... this is only the case if you kept the stock pipe diameter, which again would be pointless. however if you ARE increasing the pipe size than a cat back even with the cat still in, WILL improve performance over stock as long as the new system is larger diameter... i may be misunderstanding what yrou sayign and if so then excuse my misunderstanding.

axle back with same size pipe = pretty close to 0hp depending on muffler

axle back with larger pipe= a small gain in hp also depending on muffler

cat back with sec cat in stock pipe size= pretty close to 0hp depending on muffler

cat back without sec cat and stock pipe size= small gain in hp also dependant on muffler

cat back with sec cat IN and larger pipe = high gain in hp slightly dependant on muffler

cat back with out sec cat and larger pipe= highest gains possible from a cat back system but not road legal.

so according to the above... the onyl way any axle back or cat back is worth it is if it increases the pipe diameter, if it does not all your doing is payign for a new muffler.


ALSO, you can get a exhaust set up for even under 300.

all you have to do is go to a shop that does pressure or mandrel bent pipes (never evr ever get crushed bent) buy a magnaflow muffler (or your choice borla, greddy) and tell them to run (insert larger diamter size pipe here) from the sec cat to the muffler.

and now you have a CUSTOM catback that is street legal that will out perform any axle back and any catback that didnt increase the pipe size. it will take most shops 1-2 hours to complete and in my area is under $250 and %100 smog legal in every way.

i never really understood people buying pre-made catbacks unless it only foro bragging rights to say you have a (x) brand cat back. personally id rather brag about havign a CUSTOM (x)brand catback and that i got it for under 300 dollars

 

heres a compilation of clips from my custom magnaflow exhaust. was $200 dollars but i got a deal with the owner :D anyways its on a 2.2L GM engine with intake.

---Click here to listen to exhaust 3mb----

 

2200fire- So nice to see that I have to prove you wrong on the forums AGAIN!

The pipe size I am using is 21/4inch OD and the secondary cat is removed so it is not-smog legal. That is why I listed it as not smog legal,also the catback I designed replaces the whole section from the flange not the secondary cat. It bolts onto the system perfectly.

So now everything you typed was not needed, because you thought the system attaches to the back of the secondary cat. The system replaces everything from the back pipe of the thermal reactor.(manifold catalytic converter) <<<<remember this one, you thought it wasn't real!!!


Also you forget that a lot of scion owners like to install their own stuff, not everyone like to have stuff installed by a dealer or shop. A lot of scion owners are DIY types, so try to back off and simer down you GM guy. [/quote]