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Old 02-14-2011, 05:34 AM   #1
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Arrow Fuel Cut off At 4k RPM

I have a freshly rebuilt 7MGTE in my mk3 and whenever i get on the gas my engine gets to 4000 rpm and has a fuel cut off. How can i set it so it cuts off at a higher rpm? or just turn off the fuel cut?
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Old 02-14-2011, 05:39 AM   #2
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Fuel cut is there to protect you, by eliminating or raising fuel cut you're just covering up a problem and can cause some serious problems for your engine.

Are you running a stock setup or do you have some mods?
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1989 7MGTE R154 Targa Top White Package w/Blue Interior
Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels
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Old 02-14-2011, 05:48 AM   #3
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it has some mods on it, i have a BOV vented to the atmosphere an upgraded turbo Greddy 3in exhaust and some other engine work.
but it's not tuned and it cuts out at 4k but i don't redline until 7k
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Old 02-14-2011, 05:54 AM   #4
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Sounds like you need some sort of fuel controller, or to install a boost controller and turn down the boost. You can do the Lexus AFM and 550's to trick the computer, but that's not an exact science. Your best bet is a fuel controller, as this will give you much more fine tuning and will yield greater (and SAFER) power potential. In another thread cre recommended to another member the Apex'i SAFC-II, Neo (it's successor), MAFT Pro, or you could go standalone EMS. I'd say do some research on the different systems and find one that meets your goals.
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1989 7MGTE R154 Targa Top White Package w/Blue Interior
Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels
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Old 02-14-2011, 06:00 AM   #5
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I have a boost controller installed but im not sure how to set it so it wont cut
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Old 02-14-2011, 06:11 AM   #6
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You would turn down the boost to a safe level. IIRC that's somewhere around 12 or 13 psi
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1989 7MGTE R154 Targa Top White Package w/Blue Interior
Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels
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Old 02-14-2011, 07:08 AM   #7
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okay thanks i'll try to set it
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