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The Terminator
Engine/Tuning
Improved GT Walbro Pump Install
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<blockquote data-quote="MalcolmV8" data-source="post: 15553033" data-attributes="member: 8854"><p>You generally have to drill a hole through the stock fuel hat and add a couple wires. The OEM wiring was barely adequate for the stock pumps and don't handle the higher current of bigger pumps well. You end up with voltage drops and lower than expected performance from your new pumps. You then need to find a way to seal the newly drilled hole with a fuel resistant adhesive.</p><p></p><p>For electrical you need to use fuel proof connectors. Whether its the kind you solder and crimp or plug in etc. is up to you.</p><p></p><p>You can see why people just opt for a Fore fuel hat. Much cleaner and easier setup and much less likely to give problems down the road.</p><p></p><p>Fuel pump voltage tables do need adjustment on a returnless car but that requires tuning software and knowledge. Likely you can start the car and drive it easy out of boost to your tuner. The ECU will make adjustments and re-learn the fuel pump voltage table so it will get better after some driving.</p></blockquote><p></p>
[QUOTE="MalcolmV8, post: 15553033, member: 8854"] You generally have to drill a hole through the stock fuel hat and add a couple wires. The OEM wiring was barely adequate for the stock pumps and don't handle the higher current of bigger pumps well. You end up with voltage drops and lower than expected performance from your new pumps. You then need to find a way to seal the newly drilled hole with a fuel resistant adhesive. For electrical you need to use fuel proof connectors. Whether its the kind you solder and crimp or plug in etc. is up to you. You can see why people just opt for a Fore fuel hat. Much cleaner and easier setup and much less likely to give problems down the road. Fuel pump voltage tables do need adjustment on a returnless car but that requires tuning software and knowledge. Likely you can start the car and drive it easy out of boost to your tuner. The ECU will make adjustments and re-learn the fuel pump voltage table so it will get better after some driving. [/QUOTE]
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Improved GT Walbro Pump Install
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