MY YARIS IS SLOW NOW????? - Page 2 - Toyota Yaris Forums

PetersRedYaris · 03-07-2007, 04:32 PM

[QUOTE=ChinoCharles;60238]-slaps forehead-

Listen, here is the deal... with exhausts on your Yaris... first of all, you guys are still running a stock midpipe right in the middle of your system. You'd probably see better gains replacing the header and midpipe than you would the header and axleback portion. The key is to "get it out." Running 2.25" piping for the first 50% of your exhaust will free you up... running 2.5" piping to 2" piping then back to 2.25", that is just crazy. If you expect noticable performance gains from that kind of a setup, you're crazy too. QUOTE]

I wasn't expecting big gains, but I'm not excited about low end loss either. I really wanted it for the sound and stainless construction.

ROCKLANDTOYOTA · 03-07-2007, 04:53 PM

Quote:

Originally Posted by Nimble

NEWS FLASH!!! A Yaris is slow even with a header, pulley, intake, exhaust, lightweight oil filter cap, high performance windshield washer fluid tank, color matched badges, less than 1/2 a tank of gas, and you cutting your legs off to save weight.

this is the kind of crap answer i didn't expect to see in this forum but its all good.........

Nimble · 03-07-2007, 05:01 PM

Expect it more with all the lame posts you've been making. Besides, haven't you read my avatar?

ChinoCharles · 03-07-2007, 09:28 PM

Don't mind Nimble. He's a prick, but we tolerate him nonetheless.

PetersRedYaris · 03-07-2007, 09:56 PM

Quote:

Originally Posted by ChinoCharles

Don't mind Nimble. He's a prick, but we tolerate him nonetheless.

Yeah, don't mind the exaggerated response, It's just the roids talking.

ChinoCharles · 03-07-2007, 10:08 PM

We still love you Nimble.

Someone has to slap the rice out of the forums. Guess its you now.

Poorboy · 03-07-2007, 11:13 PM

Where do you get that high performance washer fluid at? How many hp increase

Nimble · 03-07-2007, 11:14 PM

Quote:

Originally Posted by ChinoCharles

Don't mind Nimble. He's a prick, but we tolerate him nonetheless.

Nimble · 03-07-2007, 11:15 PM

Quote:

Originally Posted by Poorboy

Where do you get that high performance washer fluid at? How many hp increase

12 to the wheels on rwd, 14 on fwd, we're lucky.

Nimble · 03-07-2007, 11:15 PM

Quote:

Originally Posted by PetersRedYaris

Yeah, don't mind the exaggerated response, It's just the roids talking.

tekmoe · 03-07-2007, 11:31 PM

Quote:

Originally Posted by Nimble

Expect it more with all the lame posts you've been making. Besides, haven't you read my avatar?

dam, thats cold.

ToTo · 03-08-2007, 03:37 AM

Quote:

Originally Posted by ChinoCharles

Sure, you can throw a high flow cat in your custom midpipe. The only thing is you're still going to have to do your homework and figure out how to deal with the sensors. From what I understand, nobody has had much luck with this yet, hence why no aftermarket company is offering a midpipe. Therefore, in order to run a high-flow cat you'll probably end up having to trick the sensors, but if you're tricking the sensors you don't need a cat, so why have it? Even a high-flow cat will make you lose a little flow vs. not having one at all. I say trick the sensors, buy a muffler and bend some 2.25"... make/weld yourself a little flange and booya.

Regarding the high flow cat, why do you have to trick the sensors? I just dont really understand. On the Yaris there are 2 sensors, one in the manifold and one after the cat. So if you put all your sensors back in after installing the high flow cat, I just dont get why the engine light would come on? The high flow cat is changing and giving different results for the second sensor... Not like with a decat which is the same result between the two sensors, which makes the engine light come on...

ROCKLANDTOYOTA · 03-08-2007, 10:37 AM

not a problem i deal with douche bags on a daily basis anyway........

sqcomp · 03-08-2007, 10:41 AM

Apparently since I'm a ZPI hater (not really) you might not want to try this little trick I learned from my SRT-4 days...

Toto- I believe I know why you're going to see a code if you just install on a straight pipe. Read on...

When I replaced my o2 pipe and my downpipe, we had two o2 sensors. One on the o2 pipe itself and one in the "cat" area. I decided to run a straight downpipe with a cutout. I understood that the computers would throw a code if the o2 sensors didn't detect a certain temperature difference between the two sensors. What I did was to buy a spark plug non-fouler, bore the inside out a little bit with a 1/2" drill bit. Why? Well, go ahead and try to screw in an o2 sensor to an 18mm non-fouler without boring the inside top out a little bit, you'll understand...the sensor just doesn't fit. When you take a bit of material out of it it will screw right on. After you bore that non-fouler out and fit it onto the o2 sensor, simply screw the non-fouler into the downstream sensor bung.

This backs the sensor off just enough to have it read a lower temperature like you'd have with a cat...like you're supposed to. It is my belief that when you look at a catalitic converter versus a straight pipe, you should notice that the o2 sensor dosn't go straight into the pipe's exaust stream as much as it would with a straight pipe. With my limited smarts on vehicle engines, I believe the temperature issue is why you'd see a code.

Now, I can find the how to for the SRT but it is really as simple as i've described it. I don't know the specific size of the stock o2 sensor on our Yaris. Sice I'm NOT going to be messing with the engine of mine...I leave this up to you guys.

On the old car, I NEVER threw a code with this little DIY mod in the year and a half I used it.

Thoughts?

CASTREX · 03-08-2007, 11:02 AM

I'm actually going for this mod in a couple of weeks:

Custom test pipe and the non-fouler trick.

Is a cheap mod (like $60 on a local shop) so if it goes wrong I'll just go back to the original set up.

I don't want to loose any low end power (this is a DD after all) so I don't want to go for a bigger pipe. I'm just curious to see how the car reacts to a better flowing exhaust. I think there is no gain on going for a larger diameter pipe, been this a N/A 1.5L but maybe we could get something out of an improved flow.

Let you know how it goes...

ChinoCharles · 03-08-2007, 11:15 AM

I'll see if Baskin can get a hold of his guy in Toyota... maybe we can grab their coursework on their O2 sensors and see whats going on.

CASTREX, thats what I'm talking about!!! Go 2.25" though, make it a tad larger.

CASTREX · 03-08-2007, 11:19 AM

Some thing else exhaust related that I've been thinking about lately...

I kind of like the Chinocharles filosofy of cheap mods for a cheap car

Looking at the pics of theTRD muffler, it just looks almost the same as the OEM muffler with a nice polished tip. I guess the difference must be on the inside.

So, any one thinks that could be possible to open the OEM muffler and take some guts out of it? I dunno how that muffler looks on the inside, but anyone thinks that this could be done? Improved flow and quite at the same time!

Nimble · 03-08-2007, 12:26 PM

Quote:

Originally Posted by ROCKLANDTOYOTA

not a problem i deal with douche bags on a daily basis anyway........

Right, guys like you...you know car salesman....typical douche bags.

03-07-2007, 05:01 PM	#21
Nimble Modification Condoner. Drives: 2007 Black Sand Liftback Join Date: Jan 2007 Location: Chicago, IL Posts: 360	Expect it more with all the lame posts you've been making. Besides, haven't you read my avatar? __________________ Tanabe DF, Debadged, stripped, Black emblems

03-08-2007, 10:37 AM	#31
ROCKLANDTOYOTA JOE GIRTH Drives: YARIS 3DOOR Join Date: Feb 2007 Location: ROCKLAND TOYOTA/SCION Posts: 369	not a problem i deal with douche bags on a daily basis anyway........ __________________ http://www.carid.com/toyota-accessories/ site has a FEW interesting yaris items.....

03-08-2007, 10:41 AM	#32
sqcomp Roadrunner Jr. View User's Garage Drives: 2007 Yaris S Join Date: Jan 2007 Location: Back at home Posts: 2,609	Apparently since I'm a ZPI hater (not really) you might not want to try this little trick I learned from my SRT-4 days... Toto- I believe I know why you're going to see a code if you just install on a straight pipe. Read on... When I replaced my o2 pipe and my downpipe, we had two o2 sensors. One on the o2 pipe itself and one in the "cat" area. I decided to run a straight downpipe with a cutout. I understood that the computers would throw a code if the o2 sensors didn't detect a certain temperature difference between the two sensors. What I did was to buy a spark plug non-fouler, bore the inside out a little bit with a 1/2" drill bit. Why? Well, go ahead and try to screw in an o2 sensor to an 18mm non-fouler without boring the inside top out a little bit, you'll understand...the sensor just doesn't fit. When you take a bit of material out of it it will screw right on. After you bore that non-fouler out and fit it onto the o2 sensor, simply screw the non-fouler into the downstream sensor bung. This backs the sensor off just enough to have it read a lower temperature like you'd have with a cat...like you're supposed to. It is my belief that when you look at a catalitic converter versus a straight pipe, you should notice that the o2 sensor dosn't go straight into the pipe's exaust stream as much as it would with a straight pipe. With my limited smarts on vehicle engines, I believe the temperature issue is why you'd see a code. Now, I can find the how to for the SRT but it is really as simple as i've described it. I don't know the specific size of the stock o2 sensor on our Yaris. Sice I'm NOT going to be messing with the engine of mine...I leave this up to you guys. On the old car, I NEVER threw a code with this little DIY mod in the year and a half I used it. Thoughts? __________________ “To argue with a person who has renounced the use of reason is like administering medicine to the dead.” ― Thomas Paine

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03-07-2007, 04:32 PM	#19
PetersRedYaris View User's Garage Drives: 2005 Scion xB Join Date: Nov 2006 Location: The Black Hills of South Dakota Posts: 1,059	[QUOTE=ChinoCharles;60238]-slaps forehead- Listen, here is the deal... with exhausts on your Yaris... first of all, you guys are still running a stock midpipe right in the middle of your system. You'd probably see better gains replacing the header and midpipe than you would the header and axleback portion. The key is to "get it out." Running 2.25" piping for the first 50% of your exhaust will free you up... running 2.5" piping to 2" piping then back to 2.25", that is just crazy. If you expect noticable performance gains from that kind of a setup, you're crazy too. QUOTE] I wasn't expecting big gains, but I'm not excited about low end loss either. I really wanted it for the sound and stainless construction.

03-07-2007, 09:28 PM	#22
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	Don't mind Nimble. He's a prick, but we tolerate him nonetheless.

03-07-2007, 10:08 PM	#24
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	We still love you Nimble. Someone has to slap the rice out of the forums. Guess its you now.

03-07-2007, 11:13 PM	#25
Poorboy Drives: 07 liftback Join Date: Feb 2007 Location: NE Ohio Posts: 26	Where do you get that high performance washer fluid at? How many hp increase

03-08-2007, 11:02 AM	#33
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	I'm actually going for this mod in a couple of weeks: Custom test pipe and the non-fouler trick. Is a cheap mod (like $60 on a local shop) so if it goes wrong I'll just go back to the original set up. I don't want to loose any low end power (this is a DD after all) so I don't want to go for a bigger pipe. I'm just curious to see how the car reacts to a better flowing exhaust. I think there is no gain on going for a larger diameter pipe, been this a N/A 1.5L but maybe we could get something out of an improved flow. Let you know how it goes...

03-08-2007, 11:15 AM	#34
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	I'll see if Baskin can get a hold of his guy in Toyota... maybe we can grab their coursework on their O2 sensors and see whats going on. CASTREX, thats what I'm talking about!!! Go 2.25" though, make it a tad larger.

03-08-2007, 11:19 AM	#35
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	Some thing else exhaust related that I've been thinking about lately... I kind of like the Chinocharles filosofy of cheap mods for a cheap car Looking at the pics of theTRD muffler, it just looks almost the same as the OEM muffler with a nice polished tip. I guess the difference must be on the inside. So, any one thinks that could be possible to open the OEM muffler and take some guts out of it? I dunno how that muffler looks on the inside, but anyone thinks that this could be done? Improved flow and quite at the same time!