K&N Filter kit for a Jazz
#21
08-01-2005, 09:15 AM
The engine isn't tuned for anything cept for .. well, the stock engine 
But the ECU has the ability to "tune" in Closed Loop.
As for the statement that the short intake arm will yield power - thats not true. It will suck up heated air from the engine bay, and cause performance loss.
But the ECU has the ability to "tune" in Closed Loop. As for the statement that the short intake arm will yield power - thats not true. It will suck up heated air from the engine bay, and cause performance loss.
#22
08-01-2005, 03:30 PM
haha, quite honestly....one thing that i don't really like about Fit is that....the engine compartment is so damn tight..
do you guys realize how hard it is to replace the bulb?
you gotta do it from the wheel wells, right?
ugh.......the space is so cramped that i can't fit my own hand from the engine bay to change em..
do you guys realize how hard it is to replace the bulb?
you gotta do it from the wheel wells, right?
ugh.......the space is so cramped that i can't fit my own hand from the engine bay to change em..
#23
08-02-2005, 11:48 AM
Originally Posted by strepto
Adding an aftermarket intake system is probably the most common upgrade today. However - in most cases it will increase the fuel consumption. The reason is simple. The Jazz ECU uses the output of the primary O2 sensor to calculate injector Duty Cycle. This is done in whats called a Closed Loop operation - a part of the OBD1 and OBD2 systems.
In Closed Loop Mode - the ECU will use the output of the O2 sensor to correct the fuel injectors output to match an Air Fuel Ratio (AFR) of 14.7 units of air, to 1 unit of fuel. An AFR @ 14.7:1 is called Stoich. This is the point where the blend of fuel and oxygen is optimalized to perform its best without causing too much exhaust - and without sacrificing performance. The lower the AFR value, the more fuel is consumed.
When you add a new performace Intake System the engine gets more air. ECU will get a feedback from the primary O2 sensor saying that "Hey, I got more Air today, toss in some fuel there!" and ECU increases the Duty Cycle of the injector - thus adding fuel.
Closed Loop operations are usually located between 1500 and 4000 RPMs. On the higher revs the ECU uses static maps programmed into the ECU to calculate injector Duty Cycle. This is called Open Loop. Regardless of amount of air entering the engine, the ECU will tell the injectors to spray the same amount of fuel. This causes another problem with the aftermarket intake.
The stock ECU has its fuel and ignition maps made based on the stock intake, and the supplied air the stock intake can take - of course with a certain degree of variation based on climate, temerature, etc. When you add a new intake to the car, which gives the engine more air - you can end up running lean on the higher RPMs. Ultimately - this can cause the engine to overheat and in rare cases die on you due to overheating (high AFR causes more heat). A more common problem is engine knock and reduced performance from the engine.
An aftermarket intake system can yield great results performance wise - but like all other engine parts - it needs to be tuned to perform its best
In Closed Loop Mode - the ECU will use the output of the O2 sensor to correct the fuel injectors output to match an Air Fuel Ratio (AFR) of 14.7 units of air, to 1 unit of fuel. An AFR @ 14.7:1 is called Stoich. This is the point where the blend of fuel and oxygen is optimalized to perform its best without causing too much exhaust - and without sacrificing performance. The lower the AFR value, the more fuel is consumed.
When you add a new performace Intake System the engine gets more air. ECU will get a feedback from the primary O2 sensor saying that "Hey, I got more Air today, toss in some fuel there!" and ECU increases the Duty Cycle of the injector - thus adding fuel.
Closed Loop operations are usually located between 1500 and 4000 RPMs. On the higher revs the ECU uses static maps programmed into the ECU to calculate injector Duty Cycle. This is called Open Loop. Regardless of amount of air entering the engine, the ECU will tell the injectors to spray the same amount of fuel. This causes another problem with the aftermarket intake.
The stock ECU has its fuel and ignition maps made based on the stock intake, and the supplied air the stock intake can take - of course with a certain degree of variation based on climate, temerature, etc. When you add a new intake to the car, which gives the engine more air - you can end up running lean on the higher RPMs. Ultimately - this can cause the engine to overheat and in rare cases die on you due to overheating (high AFR causes more heat). A more common problem is engine knock and reduced performance from the engine.
An aftermarket intake system can yield great results performance wise - but like all other engine parts - it needs to be tuned to perform its best
I don't seem to be getting this problem. I sometimes run the car close to 6000 rpm before changing gears and I do a sustained 4000+rpm on highways occasionally when there are no cars. The engine does not seem to overheat and I don't encounter engine knocking. We have warm weather here in the Philippines. What possible signs do I look for?
Also, you have mentioned that it needs to be tuned to perform its best. Can you explain more about how to do this?
By the way, I do consistently better in terms of gasoline consumption. This is probably because I get more response with a lighter touch on the gas pedal than I did before. And this filter has a tube that feeds cold air so it's not getting all the hot air.
Thanks.
Last edited by ken1279; 08-02-2005 at 03:52 PM.
#24
08-07-2005, 07:53 PM
Originally Posted by ken1279
Hello,
I just want to share my feedback the filter upgrade I did on my 1.3 i-DSI Jazz.
Pros:
1) Increased throttle response. This is expected since the air intake is less restrictive.
2) Increased power on Low, Mid and High RPM range.
3) Lower gas consumption. If I don't go over 3,000 RPM.
Cons:
1) Since the response is great, I get tempted to go faster than usual so sometimes I consume too much gasoline . Not to mention that I also go over the speedlimit . Other than that, I don't see a downside to it yet.
Actual picture of my filter:
More info on the filter:
http://www.knfilters.com/search/prod...x?Prod=57-0602
I just want to share my feedback the filter upgrade I did on my 1.3 i-DSI Jazz.
Pros:
1) Increased throttle response. This is expected since the air intake is less restrictive.
2) Increased power on Low, Mid and High RPM range.
3) Lower gas consumption. If I don't go over 3,000 RPM.
Cons:
1) Since the response is great, I get tempted to go faster than usual so sometimes I consume too much gasoline . Not to mention that I also go over the speedlimit . Other than that, I don't see a downside to it yet.
Actual picture of my filter:
More info on the filter:
http://www.knfilters.com/search/prod...x?Prod=57-0602
#25
08-09-2005, 01:31 AM
I got it from the distributor of K&N here in the Manila:
Fusion R Motorsports
Address: 1328 A E. Rodriguez Ave., QC
Phone: (632)724-3921
I bought it for Php 11,000. And yes, I would say it is relatively easy to install.
Fusion R Motorsports
Address: 1328 A E. Rodriguez Ave., QC
Phone: (632)724-3921
I bought it for Php 11,000. And yes, I would say it is relatively easy to install.
#27
08-15-2005, 05:15 AM
too bad that FIT's engine bay is too cramp. It's true on what Strepto's words, the short air intake for FIT sucks up warm air, that's what I'm so worry about with this K&N intake, even though it has a cold air feeder tube.
The problem is that our FIT can't take a cold air intake so that the air/fuel ratio will not be optimized to the full extent. Unless if you can secured the air filter to a isolated box that pull cold air.
I used to have an AEM cold air intake with my CD5 Honda (F22 engine), I thought I had a pretty good air/fuel ratio until I got an air/fuel controller, then I realized I have somewhat optimized the air/fuel ratio.
But now in Jakarta, with flood everywhere when it rains *sigh*, no more cold air intake!!
Btw, Ken, does the K&N has input/hole for the O2 sensor? do you have pictures of your HKS exhaust and grounding cable installation? Can you post them if you don't mind? Thanks in advance.
The problem is that our FIT can't take a cold air intake so that the air/fuel ratio will not be optimized to the full extent. Unless if you can secured the air filter to a isolated box that pull cold air.
I used to have an AEM cold air intake with my CD5 Honda (F22 engine), I thought I had a pretty good air/fuel ratio until I got an air/fuel controller, then I realized I have somewhat optimized the air/fuel ratio.
But now in Jakarta, with flood everywhere when it rains *sigh*, no more cold air intake!!
Btw, Ken, does the K&N has input/hole for the O2 sensor? do you have pictures of your HKS exhaust and grounding cable installation? Can you post them if you don't mind? Thanks in advance.
Last edited by DeJaVu; 08-15-2005 at 05:18 AM.
#28
08-15-2005, 08:32 AM
have u had any problems so far with the intake? like suckin up warm air?, have u heard of Simota air intakes they say that can have one made for the jazz, my sister told me this cos she lives in manila, ayala, they have this store that sells car accessories and the dude told her that they can order a simota intake for the jazz
What do u guys think about this Simota intakes?
What do u guys think about this Simota intakes?
#29
08-15-2005, 11:22 AM
Originally Posted by DeJaVu
too bad that FIT's engine bay is too cramp. It's true on what Strepto's words, the short air intake for FIT sucks up warm air, that's what I'm so worry about with this K&N intake, even though it has a cold air feeder tube.
The problem is that our FIT can't take a cold air intake so that the air/fuel ratio will not be optimized to the full extent. Unless if you can secured the air filter to a isolated box that pull cold air.
I used to have an AEM cold air intake with my CD5 Honda (F22 engine), I thought I had a pretty good air/fuel ratio until I got an air/fuel controller, then I realized I have somewhat optimized the air/fuel ratio.
But now in Jakarta, with flood everywhere when it rains *sigh*, no more cold air intake!!
Btw, Ken, does the K&N has input/hole for the O2 sensor? do you have pictures of your HKS exhaust and grounding cable installation? Can you post them if you don't mind? Thanks in advance.
The problem is that our FIT can't take a cold air intake so that the air/fuel ratio will not be optimized to the full extent. Unless if you can secured the air filter to a isolated box that pull cold air.
I used to have an AEM cold air intake with my CD5 Honda (F22 engine), I thought I had a pretty good air/fuel ratio until I got an air/fuel controller, then I realized I have somewhat optimized the air/fuel ratio.
But now in Jakarta, with flood everywhere when it rains *sigh*, no more cold air intake!!
Btw, Ken, does the K&N has input/hole for the O2 sensor? do you have pictures of your HKS exhaust and grounding cable installation? Can you post them if you don't mind? Thanks in advance.
About the air/fuel controller, I don't think I'll need this yet. Even the guy who tunes my car disagrees that I need this. I wanted the Apex'i air/fuel controller because it looks cool. For now, Intake/Header/Exhaust would be enough for me until I get money enough for a turbo. Then I'll need that air/fuel controller.
I'll look for pics of the HKS exhaust. About the grounding kit, what pictures do you require? A close-up?
Last edited by ken1279; 08-15-2005 at 11:29 AM.
#30
08-15-2005, 11:33 AM
Originally Posted by azkikersfit
have u had any problems so far with the intake? like suckin up warm air?, have u heard of Simota air intakes they say that can have one made for the jazz, my sister told me this cos she lives in manila, ayala, they have this store that sells car accessories and the dude told her that they can order a simota intake for the jazz
What do u guys think about this Simota intakes?
What do u guys think about this Simota intakes?
#31
08-15-2005, 02:04 PM
Dejavu,
I uploaded pics of my car in the gallery section. You might be able to see the HKS muffler there. I also included a new pic of my engine bay.
I uploaded pics of my car in the gallery section. You might be able to see the HKS muffler there. I also included a new pic of my engine bay.
Last edited by ken1279; 08-15-2005 at 02:36 PM.
#32
08-26-2005, 08:29 AM
Originally Posted by ken1279
Dejavu,
I uploaded pics of my car in the gallery section. You might be able to see the HKS muffler there. I also included a new pic of my engine bay.
I uploaded pics of my car in the gallery section. You might be able to see the HKS muffler there. I also included a new pic of my engine bay.
#33
08-26-2005, 07:18 PM
Originally Posted by DeJaVu
Thanks Ken, btw, is your car A/T or M/T? I was told by a local guy in another forum that he has a A/T i-DSi, and he did not recommend K&N air intake, it made his Jazz feel less powerful on the low-end, so he took it out.
#35
08-27-2005, 10:40 PM
Originally Posted by kentris
Just curious whether this kit would fit on the 1.2 Jazz (GD5-L12A)
K&N Part number for the panel filter is 33-2872.
The pod kit is 57-0602. Installation instructions: http://www.kandn.com/instructions/57-0602.pdf.
#36
08-29-2005, 04:33 AM
Got the K&N intake kit
Bought and installed the K&N intake kit last weekend
https://www.fitfreak.net/gallery/dis...e.php?pos=-499
Mine did not have an O2 sensor, so I had to customized it. Also, I didn't put the flexible hose under the tray, but I found a rectangle hose going down under the front fender, so I decided to take the air from there.
Overall, I'm very satisfied with the product.
Btw, mine is GD3 L15A vtec A/T, low end is not a problem.
Prop to Ken who had answered my curious questions
https://www.fitfreak.net/gallery/dis...e.php?pos=-499
Mine did not have an O2 sensor, so I had to customized it. Also, I didn't put the flexible hose under the tray, but I found a rectangle hose going down under the front fender, so I decided to take the air from there.
Overall, I'm very satisfied with the product.
Btw, mine is GD3 L15A vtec A/T, low end is not a problem.
Prop to Ken who had answered my curious questions
Last edited by DeJaVu; 08-29-2005 at 05:58 AM.
#39
08-30-2005, 09:55 PM
Originally Posted by DeJaVu
Bought and installed the K&N intake kit last weekend
https://www.fitfreak.net/gallery/dis...e.php?pos=-499
Mine did not have an O2 sensor, so I had to customized it. Also, I didn't put the flexible hose under the tray, but I found a rectangle hose going down under the front fender, so I decided to take the air from there.
Overall, I'm very satisfied with the product.
Btw, mine is GD3 L15A vtec A/T, low end is not a problem.
Prop to Ken who had answered my curious questions
https://www.fitfreak.net/gallery/dis...e.php?pos=-499
Mine did not have an O2 sensor, so I had to customized it. Also, I didn't put the flexible hose under the tray, but I found a rectangle hose going down under the front fender, so I decided to take the air from there.
Overall, I'm very satisfied with the product.
Btw, mine is GD3 L15A vtec A/T, low end is not a problem.
Prop to Ken who had answered my curious questions
hehe...
Last edited by ken1279; 08-30-2005 at 10:16 PM.
#40
08-30-2005, 10:01 PM
Originally Posted by ken1279
Hey! Glad to hear that you're satisfied? Like the sound of it? hehe...
hehe...I find revving my car to about 3-4k revs sounds really nice.