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Help!! ls vtec

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Old Jul 17, 2011 | 08:23 PM
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Icon3 Help!! ls vtec

Hi, I just recently installed a skunk2 manifold and also upgraded my fueil injectors (310cc) and an aem fuel rail. I know I need a tune, but when I first fired her up and took it for a spin, vtec kicked in fine and car redlined fine. After a few days I decided to engage vtec but as soon as it hits 6k rpm the car completely bogs. Any ideas? I've searched alot and found alot of questions similar to mine but have not found any real answers. Also I have an LS tranny, I usually am about 3k rpm at 80mph and this time I'm at 3.5k at 75mphThanks

Last edited by thanhzz; Jul 17, 2011 at 08:39 PM.
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Old Jul 17, 2011 | 10:01 PM
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Default Re: Help!! ls vtec

Originally Posted by thanhzz
I know I need a tune
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Old Jul 18, 2011 | 10:58 PM
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Default Re: Help!! ls vtec

so wouldn't it effect my tune since the installation, it worked fine for that day but after a few days and I tried it again, it started bogging
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Old Jul 18, 2011 | 11:29 PM
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Default Re: Help!! ls vtec

You got alot of reading to do. When adding new injectors you need to re calibrate it in your tune. 240cc and 310cc are two different numbers. If you can't afford it then but your stock injectors or whatever you had before back in.
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Old Jul 19, 2011 | 10:57 AM
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Default Re: Help!! ls vtec

thanks, just wondering why it worked and a few days down the line it started to bog thats all. but thanks for your input.
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Old Jul 19, 2011 | 11:12 AM
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Default Re: Help!! ls vtec

Why did you put in 310s? Do you NEED them? Is this some high compression motor?
If not, you wasted your money, take them out, put stock injectors back in, problem solved.
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Old Jul 20, 2011 | 01:43 PM
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Default Re: Help!! ls vtec

well my ecu on crome was reflashed with the 310cc on them. I got the 310cc with my other things i bought so i installed it cause im planning to get it built soon
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Old Jul 20, 2011 | 01:58 PM
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Default Re: Help!! ls vtec

Originally Posted by thanhzz
well my ecu on crome was reflashed with the 310cc on them. I got the 310cc with my other things i bought so i installed it cause im planning to get it built soon
Injectors are something you do last, you are wasting money and causing unwanted problems jumping the gun by installing them now.
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Old Jul 20, 2011 | 08:19 PM
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Default Re: Help!! ls vtec

The difference is your ecu has adjusted to the different A/F ration and is running rich because it thinks you have smaller injectors.
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Old Jul 21, 2011 | 12:26 AM
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Default Re: Help!! ls vtec

i tried swapping back to stock injectors and it's still the same...........
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Old Jul 21, 2011 | 01:48 AM
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Default Re: Help!! ls vtec

So what injector size do you actually have on your ecu? Stock or the 310's?
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Old Jul 21, 2011 | 02:15 AM
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Default Re: Help!! ls vtec

i have two ecu, one for 310cc right now and the other one stock 240cc. i tried both the one that is set up for 310cc runs like crap and the 240cc better but still happens like before
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Old Jul 21, 2011 | 02:18 AM
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Default Re: Help!! ls vtec

i think i might find an answer http://www.carolinahondas.com/tech-t...er-solved.html gonna see if i can borrow a obd1 vtec dizzy and see
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Old Aug 28, 2011 | 10:10 PM
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Default Re: Help!! ls vtec

I figured out the problem guys!! My dipstick was dead on the full mark but due to frustration i added a lil more oil.. maybe 1/4 of a quart and vtec works fine but then my oil is kinda past the dipstick... what should i do?
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