K&N Filter kit for a Jazz
Member
Joined: Apr 2006
Posts: 466
From: Oxnard, CA
Originally Posted by kocba
Its not true in general - depends on construction of CAI.
I know a guy, who is a pro in engine tuning. He has been dynoing a car (Civic with B18 engine).
1st with CAI
2nd with Short Ram
Conclusion was, that the engine torque and power curve was constant (a smooth line without drops) with Shot Ram. With CAI the curve showed a significant drop of T and P in the mid range of RPM. In both cases ECU tuning was applied and dynoed. Both applications used the same filter.
Of course it depends on the engine disposition and construction of CAI.
One more thing (imho), if you are applying any open pod systems (CAI or Short Ram), you need to reset the ECU for max. achievement (so ECU will adjust from scratch) -> its simply done by disconecting the main supply at the battery.
I know a guy, who is a pro in engine tuning. He has been dynoing a car (Civic with B18 engine).
1st with CAI
2nd with Short Ram
Conclusion was, that the engine torque and power curve was constant (a smooth line without drops) with Shot Ram. With CAI the curve showed a significant drop of T and P in the mid range of RPM. In both cases ECU tuning was applied and dynoed. Both applications used the same filter.
Of course it depends on the engine disposition and construction of CAI.
One more thing (imho), if you are applying any open pod systems (CAI or Short Ram), you need to reset the ECU for max. achievement (so ECU will adjust from scratch) -> its simply done by disconecting the main supply at the battery.
For you members waiting for this product
https://www.fitfreak.net/forums/112649-post12.html
https://www.fitfreak.net/forums/112649-post12.html
I registered with the K & N site for info. on new products in the works for Fits back in September. When they Emailed about the drop-in filter, I bought and installed it. But because the OEM air box has a "muffler", that translates to me as restrictive baffling to reduce noise. I did notice a slight MPG increase with the drop-in filter. I just ordered the "Typhoon" SRI kit because with no muffler, restriction must also be reduced. Although the Fujita SRI is somewhat cheaper, I have read complaints about its crooked fit in the engine bay. I decided to spend more on the K & N because of decades of good experience with their quality and effectiveness. I do not expect huge gains in fuel economy, but believe that this will pay for itself over (a long) time.
Dave
Oofie & 4dr:
I registered with the K & N site for info. on new products in the works for Fits back in September. When they Emailed about the drop-in filter, I bought and installed it. But because the OEM air box has a "muffler", that translates to me as restrictive baffling to reduce noise. I did notice a slight MPG increase with the drop-in filter. I just ordered the "Typhoon" SRI kit because with no muffler, restriction must also be reduced. Although the Fujita SRI is somewhat cheaper, I have read complaints about its crooked fit in the engine bay. I decided to spend more on the K & N because of decades of good experience with their quality and effectiveness. I do not expect huge gains in fuel economy, but believe that this will pay for itself over (a long) time.
Dave
I registered with the K & N site for info. on new products in the works for Fits back in September. When they Emailed about the drop-in filter, I bought and installed it. But because the OEM air box has a "muffler", that translates to me as restrictive baffling to reduce noise. I did notice a slight MPG increase with the drop-in filter. I just ordered the "Typhoon" SRI kit because with no muffler, restriction must also be reduced. Although the Fujita SRI is somewhat cheaper, I have read complaints about its crooked fit in the engine bay. I decided to spend more on the K & N because of decades of good experience with their quality and effectiveness. I do not expect huge gains in fuel economy, but believe that this will pay for itself over (a long) time.
Dave
Member
Joined: Aug 2006
Posts: 232
From: Gone
The Fit's stock intake box has a small bulbous chamber right above the snorkel, and there is another more complex chamber molded into the bottom side of the main air box....what is interesting is that this chamber has an opening to the area beneath the filter, exposed to unfiltered air, and the other end is open at the throttle body. So it is conceivable that the intake could be pulling in a small portion of unfiltered air, but I'm betting that by design it does nothing other than equalize the pressure between the two areas of the chamber. For those who don't understand what I'm talking about, take out the stock air filter and look for a small notch opening in the bottom of the intake torwards the front of the car. That passage leads all the way beneath the intake and opens up at the throttle body.
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.
...mega snip...
- it needs to be tuned to perform its best
...mega snip...
- it needs to be tuned to perform its best
so, I wonder that also a simple flat panel filter (a-la K&N, or similar) would behave similarly... What would you recommend (if any) as a filter upgrade for my wife's Jazz 1,2l ?
Thanks a lot,
Stefano
Member
Joined: Apr 2007
Posts: 39
From: Dallas, TX
Utnorris
New Member
Joined: Oct 2006
Posts: 9
From: Philippines
I logged on the K&N website and found out that the part number for the Typhoon Intake System 69-1016TS. Does anybody know if this will fit in a 1.3L IDSi Jazz? Because it said in the website that it is for a 2007 1.5L Fit. Is there any difference?
IT IS STILL AN ISSUE with USDM Fits!! K&N SRI does not fit properly with USDM. The previous poster was asking about his Australian Jazz. I don't believe that there are any fitment problems with K&N intakes on JDM 1.3L Jazz.