#4596146 - 03/16/10 05:37 PM
2010 Civic Si questions and suggestions.
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s1nfulcivic
Newbie
Registered: 03/16/10
Posts: 7
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Hey, I'm pretty new to this whole mod thing and I had a few questions and was hoping someone knew more about the subject than myself.
My starting plans are to add; Cold air intake (AEM), Exhaust (Magnaflow- 16688) and I was thinking of putting on a throttle body spacer (helix 91204) and possibly headers.....
My first question is will the helix spacer work with the AEM intake or will the spacer cause problems... Is the spacer worth while?
Second, are AEM and Magnaflow the best intake and exhaust or would someone suggest some other combination that is better.
Third, If I were to get headers is it worth it and what company is best to go with.
I appreciate all responses and suggestions, If you do have part numbers for your suggestions that would be greatly appreciated as I have a friend that can get me parts at cost.
Thanks again 
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#4596200 - 03/16/10 05:58 PM
Re: 2010 Civic Si questions and suggestions.
[Re: s1nfulcivic]
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#lodestar
Post Master Supreme
Registered: 06/05/06
Posts: 42768
Loc: Not in Kansas anymore
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I wouldn't buy AEM. I like my K&N, others like fujita an injin (sp).
Magnaflow is a decent brand. I would research the sound of them too.
Headers, well where do you live. A full race header is going to pull the cat. If you live, not in Cali, you might be ok. In Cali or other states with inspection inspections I would only get something that is CARB legal/approved.
_________________________
 I take no joy in owning you people like this anymore. Now I just feel like I'm teaching a retarded class & doing God's work." -Napoleon complex things
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#4596205 - 03/16/10 05:59 PM
Re: 2010 Civic Si questions and suggestions.
[Re: #lodestar]
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#lodestar
Post Master Supreme
Registered: 06/05/06
Posts: 42768
Loc: Not in Kansas anymore
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If you are thinking about that much scratch on your civic, once you get IHE you might think about a COBB access port or hondata to get full use out of the mods.
_________________________
I take no joy in owning you people like this anymore. Now I just feel like I'm teaching a retarded class & doing God's work." -Napoleon complex things
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#4596211 - 03/16/10 06:01 PM
Re: 2010 Civic Si questions and suggestions.
[Re: #lodestar]
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s1nfulcivic
Newbie
Registered: 03/16/10
Posts: 7
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Yeah k&n was my other choice for intake. Do you know if a spacer will effect it fitting? And sorry, I'm really new to this what was the whole second post about? is that something to do with the computer?
I live in canada so they don't do vehicle inspection.
Edited by s1nfulcivic (03/16/10 06:02 PM)
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#4596741 - 03/16/10 08:54 PM
Re: 2010 Civic Si questions and suggestions.
[Re: s1nfulcivic]
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sleeper_civic
Post Master Sr
Registered: 03/18/00
Posts: 3115
Loc: Kingston, Jamaica
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The spacer does affect fitment a bit but people get it to work. In my opinion it's not a good mod as people have done dyno runs to show that while there were gains with the stock intake that it did not produce gains with an Injen intake. Yes the second post is about a device that you can use to flash a different tune on to the computer. If they don't do inspection then I would say header is a must and it will give you more gains than either intake or exhaust individually. Magnaflow is a good exhaust and it isn't too loud. I'm currently using a Vibrant header and like it a lot.
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#4596828 - 03/16/10 09:21 PM
Re: 2010 Civic Si questions and suggestions.
[Re: sleeper_civic]
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s1nfulcivic
Newbie
Registered: 03/16/10
Posts: 7
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is there any particular device that you can suggest that will NOT void the warrenty?
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#4599017 - 03/17/10 03:38 PM
Re: 2010 Civic Si questions and suggestions.
[Re: CivicSi07]
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s1nfulcivic
Newbie
Registered: 03/16/10
Posts: 7
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is the cobb tuner good? I have a couple friends saying i should do hondata over it simply because they haven't really heard of it.
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#4600138 - 03/18/10 12:32 AM
Re: 2010 Civic Si questions and suggestions.
[Re: s1nfulcivic]
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#lodestar
Post Master Supreme
Registered: 06/05/06
Posts: 42768
Loc: Not in Kansas anymore
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COBB has a shit ton of experience with Subarus. Hondata has a lot of experience with, well hondas. K20 (our engines) still have a lot of potential that hasn't been researched like the B series from Honda.
Hondata has some very basic options. Would be best for you if you do all those mods. Cobb has a lot of custom options (yes I know hondata does have a tool too) that I wont mess with.
_________________________
I take no joy in owning you people like this anymore. Now I just feel like I'm teaching a retarded class & doing God's work." -Napoleon complex things
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#4613757 - 03/23/10 08:20 PM
Re: 2010 Civic Si questions and suggestions.
[Re: CivicSi07]
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Cghouse09
Newbie
Registered: 03/23/10
Posts: 4
Loc: arkansas
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as far as what will void warranty is a tricky one. if you put a part on that causes damage to the vehicle from that added on part then it voids the warranty. example: cold air intake that sucks up some water into the motor from going over a puddle of water and then causes you to throw a rod. this is an extreme example. also messing with the ecu is also a bad idea, and even if you reset everything back to factory specs when a problem arises, most sharp technicians can figure out if the ecu has been messed with. mod carefully
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#4616972 - 03/24/10 11:34 PM
Re: 2010 Civic Si questions and suggestions.
[Re: CLAY'S 99SI]
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sleeper_civic
Post Master Sr
Registered: 03/18/00
Posts: 3115
Loc: Kingston, Jamaica
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I would say cat back exhaust and intake(short) are pretty safe wit the warranty. The problem is there are no written rules her and some dealerships are more lax than others.
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#4620858 - 03/26/10 12:30 PM
Re: 2010 Civic Si questions and suggestions.
[Re: sleeper_civic]
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s1nfulcivic
Newbie
Registered: 03/16/10
Posts: 7
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My dealership basically said "you can do whatever you want to the vehicle, should what you do damage the engine we won't be the ones paying for it" and apparently through diagnostics they can tell if your car has rev'd over its regular limit. I think I've pretty much decided on AEM CAI, Magnaflow exhaust and Vibrant Headers. I might possibly be doing JDM cam's as well.
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#4799343 - 06/05/10 06:50 PM
Re: 2010 Civic Si questions and suggestions.
[Re: #lodestar]
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Formeister
Newbie
Registered: 11/01/08
Posts: 1
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... A full race header is going to pull the cat...
First of all you'll have to read between the lines of many posts and opinions on this site. Everyone has an opinion and favorite brands. Ask for numbers from cars modified exactly as you are planning on doing and find out what and who did the tuning.
That said, you can order a full race header from Vibrant w/a hi-flow cat that gives performance and doesn't throw CEL's that will pass emissions in most states, maybe not CA.
Ingen CAI, Vibrant RH w/hfc, Vibrant 2.5" Gen2 cat back, FlashPro and a tune by Evans = approximately 210-215 whp, maybe more.
Personally, I'd skip the intake spacer and save money for larger injectors and cams down the road because with my basic mods listed above I'm at 90% duty cycle on the injectors.
How much you want to spend? Hp costs money.
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#4969420 - 08/17/10 04:08 PM
Re: 2010 Civic Si questions and suggestions.
[Re: Formeister]
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m3ntalx09
Newbie
Registered: 05/13/07
Posts: 60
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Many will tell you to buy the cold air intake/cai first because of the air flow and also the price is much cheaper than other parts. Remember, never ever get the short ram intake. those will decrease your performance. Many will argue saying that the heat shield will nullify that, but no that's bullshit.. every tests ive done with the short ram intake lost power after couple of runs. sure in the first few runs it was great, but once that engine got real hot it sucked. all it does is make it look cool when you pop your hood. also, don't get chrome.. chrome likes to retain heat so even if you get a cold air intake and it is chrome, you will lose performance as well...
Just in case your wondering, i played around with many cars while i was at UTI.
If your looking into speed and you don't really care about getting a ticket, then go with the headers first. The reason is, the way these intake systems were built in the newer cars are very good and it can still draw in plenty of cold air.
Anyways, the reason i say this is because the stock headers is not that great with the high amount of heat. So under a lot of heat which your engine WILL produce, your headers will expand and disrupt the air flow. Mind you that the air flow coming out is just as important as the air flow coming in.
Also, when i knew nothing about cars i've talked to a lot of my teachers about fixing up my car and every single one of them told me to get headers first. After looking into it, it all made sense as to why they said that.
After that I would go with exhaust. Just my personal preference. Then lastly, I would go with intake.
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