Injector Pulse Width when Nitrous is Engaged
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Joined: Jun 2000
Posts: 3
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From: San Jose,CA
Injector Pulse Width when Nitrous is Engaged
I noticed on my scan tool that the injector pulse width when the nitrous system is engaged drops substantially. The car is a 1988 GTA with 5.7 and a NOS kit. The normal pulse width at wot is around 10ms and it drops to around 6ms on nitrous. The oxygen sensor is the same on both, around 900 mv. Is this ok? Does the extra fuel injected by the NOS system make up for the lower pulse width? Also the TPS only goes to 4.35 volts at wot. Is this within the acceptable range? Any help would be greatly appreciated.
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1988 GTA, 350; rebuilt, mostly stock; 700R4; rebuilt with Red Alto clutches and a Trans Go shift kit. Next mod ... Nitrous!
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1988 GTA, 350; rebuilt, mostly stock; 700R4; rebuilt with Red Alto clutches and a Trans Go shift kit. Next mod ... Nitrous!
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Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
0.9 volts represents a pretty rich condition, so it sounds to me like your nitrous system is supplying adequate fuel.
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