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Honda Civic Coupe / Civic Si 2006+

1033 messages,  Last post on Sep 15, 2009 at 7:27 PM

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What is this discussion about? Honda Civic, Coupe, Hatchback


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#923 of 1033
2006/2007Civic Si Redline by xmontx
Mar 31, 2007 (4:43 pm)
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Because I'm not a mechanic and I'm not sure exactly how Civic SI are built to take punishments.
 
Anyway, I have a 2007 Civic SI, I was wondering if there would be any damage kicking the car at 6rpm when the vtec kicks in. I did let my car break in (~1200-1400) before going that high.
 
Also, because there is a REV limiter on the civic SI, if I went beyond and held the car at the redline to the point where the engine chokes for a 1-3 secs...Is that going to break the car? or is that the whole purpose of the REV limiter?
 
Thanks for any feedback from knowledgeable civic SI members!
#924 of 1033
Re: 2006/2007Civic Si Redline [xmontx] by john500
Apr 01, 2007 (7:24 am)
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Replying to: xmontx (Mar 31, 2007 4:43 pm)

The rev limiter is not designed for routine use (it will actually limit your speed if rely upon it because of the delay in engine power return). Your shifting skill should be sufficient that you make the shift about 100 - 300 rpm prior to the redline (i.e. the maximum horsepower is listed at 7800 rpm - there is need to rev beyond 7800). Based upon my experiences with prior makes of Civic Si's, you will not damage the car with occasional rev limiter cut-offs (occasional for me meant about once per month). The "true" redline (i.e. where engine damage occurs) is well beyond where the rev limiter kicks in.
#925 of 1033
Re: 2006/2007Civic Si Redline [xmontx] by eldaino
Apr 02, 2007 (7:21 am)
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Replying to: xmontx (Mar 31, 2007 4:43 pm)

yes thats the purpose of the rev limiter. And like john500 said, the actual point where its bad for your engine is even higher up! The k20 loves to rev.
 
One thing though; v tec hasn't been 'kiking in' at 6k rpm's since 1999; b series v tec is different than the i-vtec on your si. The switchover occurs when the engine starts being driven more aggressively; hence why they call it i vtec (i for intelligent.)
#926 of 1033
Re: 2006/2007Civic Si Redline [eldaino] by xmontx
Apr 02, 2007 (10:41 am)
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Replying to: eldaino (Apr 02, 2007 7:21 am)

That's good to know! Thanks eldaino and john500. You guys seem to know your stuff about civic SI. After buying one, it has definitely gotten me interested in what is actually in my car rather than just driving it around. I really want to keep my car for a long time, and if i can know the ins and outs of things, maybe it'll help me in the long run.
 
Thanks again guys!
#927 of 1033
Re: 2006/2007Civic Si Redline [xmontx] by eldaino
Apr 02, 2007 (10:42 am)
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Replying to: xmontx (Apr 02, 2007 10:41 am)

congrats man and enjoy your ride! Any questions you may still have, just us know and we will all do our best!
 
Is yours a coupe or sedan? And what color?
#928 of 1033
Re: 2006/2007Civic Si Redline [eldaino] by xmontx
Apr 02, 2007 (10:49 am)
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Replying to: eldaino (Apr 02, 2007 10:42 am)

2007 civic coupe fiji blue.
 
It's an amazing car. I remember the first time I just gunned it after breaking in my car and then once I heard the vtec kick in, I kept wanting to hear it more often!
 
I want to get some HID installed on the car but I just found out that it's illegal to get HID kit to get it installed. Some DOT gov't violation for not installing it correctly or something.
#929 of 1033
Re: 2006/2007Civic Si Redline [xmontx] by eldaino
Apr 04, 2007 (10:15 am)
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Replying to: xmontx (Apr 02, 2007 10:49 am)

its not illegal, you just have to find a hid kit thats dot legal. i wouldn't do it though, your money can be better spent on some performance mods.
 
Still going on about the vtec 'kicking in' i see...
#930 of 1033
Re: 2006/2007Civic Si Redline [eldaino] by xmontx
Apr 04, 2007 (11:51 am)
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Replying to: eldaino (Apr 04, 2007 10:15 am)

hmm, I guess I could hold out on the HID lights. But they just look so nice on cars in general. I want to keep my car as stocked as possible. I rather not change the way it sounds. I think Honda did a good thing by not making the noise too annoying/loud with the stocked air intake.
 
I was thinking of getting the K&N air filter. I heard it opens a little more power for the engine, but not significant to noticed? And once my warranty is done (3 years I think) I'm thinking of reprogramming the chip? Not sure what the technical term is. But it is suppose to kick in the Vtec 5 RPM instead of the stock 6 RPM. I heard that cost $600 USD.
 
Do you suggest any other modifications that you have done yourself to your civic SI?
#931 of 1033
been following this thread re mods for civic si by pkarnig
Apr 04, 2007 (1:44 pm)
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hey i am a happy owner of a 06 civic si. living in the SF bay area and want to add some performance to my new ride.
what does everyone suggest? i want to do as much as i can without going all the way to turbo.....
 
i would also like suggestions on what i should do to make the car handle better, like lowering and stiffer springs and shocks.
 
also i am wondering if increasing the width of the wheels and rubber will help.
 
any suggestions will be appreciated.
#932 of 1033
Re: been following this thread re mods for civic si [pkarnig] by xmontx
Apr 04, 2007 (1:55 pm)
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Replying to: pkarnig (Apr 04, 2007 1:44 pm)

The car has standard mods on the SI. For example the suspensions. As for lowering the car, since I live in an area that has lots of bumps, it wouldn't be wise for me to But a nice HID lights on them looks really nice. But performance wise I'm still new to it all.

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