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Old 04-18-2008, 03:28 PM   #1 (permalink)
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Question Fujita CAI SRI and other questions...

Anyone have any experience with a fujita CAI on their Hybrid? Notice any performance/milage boost? Same Question for putting a new Exhaust on your Hybrid.

Also been reading a lot of other posts on here about Wheels and tires. I've been thinking about replacing the Rims on mine because i hate how they look so much. If i find some that weight similiar to the stock wheels do you think that there will be a big milage hit? Especially if i moved to a 16" wheel. What tires would you recommend? The Bridgestones on the Hybrid don't say anything about being low rolling resistance on them, so I'm assuming that any all season tire would be fine. Is that true or false?

My ultimate goal is to maybe eak out a bit more milage/performance as well creating a sportier look (wheels).

Forgive my ignorance on the next question. I would like to install an amp and sub, would that hurt my performance on the hybrid?

This is my first Honda, as well as my first small car in a long time. I've been driving Trucks and big SUV's for awhile and really don't have any experience tuning them or upgrading parts. Any help or recommendations would be great. Thanks in advance.
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Old 04-18-2008, 04:18 PM   #2 (permalink)
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Wheels: the factory wheels are aerodynamically designed to aid in mileage. If you replace them with anything "sportier" you'll likely lose a few MPG.

CAI: I wouldn't recommend changing to a cai, as the engine is tuned specifically for the air it gets.

Exhaust: I wouldn't recommend this either, it'll juts make it louder.

Sub & Amp: I have 2500 watts of system in my CHCII. The only difference is the added weight. I've added about 300-350 pounds of system to the trunk, so I lose about 3 MPG. I haven't noticed any difference in teh charging system though. It is pretty robust.
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Old 04-18-2008, 08:04 PM   #3 (permalink)
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The OEM tires are low rolling resistance, which saves any car a bit of mileage. Trouble is, good luck finding any manufacturer who will outright tell you that a tire is LRR. I have yet to see any success stories with alternative tires, especially for driving outside of Winter.

Doesn't an exhaust replacement remove the emission controls? I thought the exhaust and air mods were not street legal.

Adding any electrical load would have the same effect as it does on alternators, except that the hybrid doesn't have an alternator. Can't get something for nothing.
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Old 04-18-2008, 08:48 PM   #4 (permalink)
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awesome, thanks for the feedback.
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Old 04-18-2008, 09:12 PM   #5 (permalink)
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All I can offer is I've read plenty about hypermilers blocking up the air intakes for better fuel economy ( I block my lower vents). Since I haven't read about any bad side effects I can only assume the car can still work pretty well with a modified amount of intake air.
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Old 04-30-2008, 04:10 PM   #6 (permalink)
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I bought a K&N CAI and I inproved my milleage, before I always do +/- 435 milles per deposit, now I can do +/- 520 milles with the same deposit.

Last edited by rufisa; 04-30-2008 at 05:55 PM.
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Old 04-30-2008, 10:05 PM   #7 (permalink)
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^wow impressive
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Old 05-01-2008, 08:58 AM   #8 (permalink)
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thats a huge improvement!!!
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Old 05-02-2008, 01:45 AM   #9 (permalink)
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can you verify that it was your CAI that made that difference? It wasn't a change in temperature or anything like that.
That is something i would be interested in doing if proven to work.
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Old 05-02-2008, 04:06 PM   #10 (permalink)
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CAI (or short-ram?)

I cannot find any K&N CAI available on their site, nor does it look like Fujita makes one. Do you mean short-ram intake?

I'd be interested in a CAI if I could find one, but I can't. I believe mixing colder air with the fuel would improve the efficiency of the 1.3 L engine. Something in my memory about heat of combustion...it's pretty foggy and I am not an engineer (as if you couldn't tell).

I agree that trying to force more air into the engine, as with a short ram intake, may simply confuse the engine management computer. I wouldn't install a short ram intake, nor would I use a high-velocity air filter. But a true cold air intake, why wouldn't that help efficiency? Comments?
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Old 05-03-2008, 12:26 PM   #11 (permalink)
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Hi guys, this is the K & N filter for the civic Hybrid that I use, part number = 33-2348



There is no change in the way of driving, the route is the same ( home/work .. work/home), even the fuel supplyer is the same
The only thing that changed was the milleage improvement
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Old 05-04-2008, 11:44 AM   #12 (permalink)
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Rufisa thanks for the pic. I'd call that a high-flow air filter (meaning, of course, that it "filters" fewer particles therefore lets the air flow by faster) not a cold air intake. Are you concerned that you may be letting more particulate matter into your engine?

My HCH II has only 2500 miles on it and the fuel efficiency gets better with every tank, I presume as the engine breaks in and the already-LRR tires lose whatever extra grip they had when they were brand new, not to mention small refinements in my hypermiling techniques. Is your vehicle still somewhat new and possibly still breaking in?
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Old 05-05-2008, 03:02 PM   #13 (permalink)
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Quote:
Originally Posted by Osager View Post
Rufisa thanks for the pic. I'd call that a high-flow air filter (meaning, of course, that it "filters" fewer particles therefore lets the air flow by faster) not a cold air intake. Are you concerned that you may be letting more particulate matter into your engine?

My HCH II has only 2500 miles on it and the fuel efficiency gets better with every tank, I presume as the engine breaks in and the already-LRR tires lose whatever extra grip they had when they were brand new, not to mention small refinements in my hypermiling techniques. Is your vehicle still somewhat new and possibly still breaking in?
I spoke to the supplier about it, and was assured that there is no such possibility of letting more particulate matter into my engine, only better air flow

My HCH II now has 36.000 Kms, and at the beginning up to 5.000 Kms, my fuel efficiency was +/- 6 liters for 100 kms, after that fuel efficiency gets better ( 5.6 liters for 100 kms ) until reach 30.000 kms, but then bought this K&N filter, and now my fuel efficiency down between 5.0 to 5.1 liters for 100 kms.

I am very pleased with the filter, because here in Portugal, the gas is very expensive, 1.45 euros per litre, more or less $2.32 per litre, and the tendency is to increase more
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