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Swapped to 30# acell injectors, now has horrible bog

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Old 07-03-2003, 03:15 PM
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Default Swapped to 30# acell injectors, now has horrible bog

The only tuning change i made to the motor when i swapped injectors is that i multiplied the injector flow rate table in ls1edit by a ?134%? (cant remember exact) when i swapped from 28.8 stock 98 injectors to 30# @ 42.5 accel's.

When i launch the car or smash on it at 2k rpm or so the car slightly pulls but feels like its completely bogging and then when the car hits approx 4k+ rpm the car takes off and you can feel it pickup 100 horsepower....which cant be good, What do i need to change to get it in the ballpark right tune?

the car also dynoed REALLYYYYYYYYYYYYYYYY low after the injector swap. Im talking real low 350 rwhp on a 227/230 heads/cam car (auto)...






The car doesnt seem tuned well at all really yet. My chassis dynojet 248 hardware is still at dynojet getting warrenty fixed so i cant dyno tune it for a week or two.

Old 07-05-2003, 08:30 PM
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Default Re: Swapped to 30# acell injectors, now has horrible bog

ttt

Old 07-06-2003, 07:59 PM
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Default Re: Swapped to 30# acell injectors, now has horrible bog

134% is too much.Did you A-tap?I would guess L-terms are pegged at 25%.
Old 07-06-2003, 09:19 PM
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Default Re: Swapped to 30# acell injectors, now has horrible bog

The constants that I used for my SVO 30# injectors vary from 4.07 @ 0 kPa to 4.45 @ 80 kPa, pretty much a straight line.

With these values, my LTrims are slightly negative. My MAF sensor is descreened stock.

What constants did you use?

-Andrew




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