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99 SI vtec loud but doesn't pull.

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Old 03-19-2009, 08:14 PM
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Default 99 SI vtec loud but doesn't pull.

My friend has a 99 Civic SI with a fresh JDM B16A swap. The VTEC crossover is very loud but the car seems like it does not pull any harder. Maybe even a little weaker through vtec. Anyone have any ideas? We even tried a different P28 and tried different basemaps but nothing seemed to help.
Old 03-19-2009, 08:15 PM
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Default Re: 99 SI vtec loud but doesn't pull.

any check engine lights? any idling issues?
Old 03-19-2009, 08:26 PM
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Default Re: 99 SI vtec loud but doesn't pull.

What kind of exhaust are you running?
Old 03-19-2009, 10:26 PM
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Default Re: 99 SI vtec loud but doesn't pull.

i have the same problem, my CEL is vtec switch and egr, idle is bouncey sometimes
Old 03-20-2009, 12:09 AM
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Default Re: 99 SI vtec loud but doesn't pull.

You've tried different basemaps?
hmm...

what RPM do you have VTEC set to engage at?



Originally Posted by BrizzlEK
i have the same problem, my CEL is vtec switch and egr, idle is bouncey sometimes
You just answered your own question (well, not directly a question, but it felt implied). Fix whatever the CEL reveals. It's quite obvious.
Old 03-20-2009, 12:23 AM
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Default Re: 99 SI vtec loud but doesn't pull.

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/vtec-engagment-2528987/

I think you guys should trade
Old 03-20-2009, 03:10 AM
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Default Re: 99 SI vtec loud but doesn't pull.

Sounds like a typical b16.
VTEC sounds like an atom bomb but still only has what 114 ft lbs of torque or something close to that.
Old 03-21-2009, 09:46 PM
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Default Re: 99 SI vtec loud but doesn't pull.

about 4800 rpm
Old 03-21-2009, 09:58 PM
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Default Re: 99 SI vtec loud but doesn't pull.

Originally Posted by donytony
about 4800 rpm
Why? First, you should put it back where it's suppose to be which is something like 5300-5500RPM.
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