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VTEC BOGS DOWN WHEN KICKS IN

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Old 06-03-2008, 11:52 AM
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Default VTEC BOGS DOWN WHEN KICKS IN

I have a 91 civic hatchback si w/b16 swap.

Im not throwing any codes


My vtec bogs down when kicks in, loss of power. Doesnt kick me back with power boost. Also when I start it it idles at around 300rpm, then wants to die, but when its warm it idles fine at 750rpm..

Will probably change out fuel filter. Check timing, I already checked fuel injectors & fuel injector filters which where all clean.

I just put on a new cat converter..

Any help would be greatly appriciated..
Old 06-06-2008, 10:46 AM
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okay so my first post failed for some reason. What is ur vtec engagement point at currently? Sounds like it is too low - chipped ecu? running obd0 or obd1? jumper or full conversion if obd1 - idle could be a number of things.
Old 06-06-2008, 11:16 AM
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Default Re: (DTA-Zombie)

I fixed the idle problem.

Its a obdo engine and ecu. The vtec kicks in at 5200 rpm. How can I lower that, get a vtec controller.

I was looking at the map sensor, it had a tee on it and was sucking in air, I fixed that, vtec is a little more smooth still bogs a little, doesnt kick me back with power!! Car warms up fine with no problems.

Also I have non-vtec spark plug wires on the car, can that be it. I didnt put them on they where on it already on car. From a 93 acura integra ls non-vtec. Im going to put on magnecor comps. dohc vtec spark plug wires on it..
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