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SVTPerformance's Chain of Restaurants
Tuning À la carte
Car won't rev past 3900 rpm (5.4L with FR ECU pack)
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<blockquote data-quote="uae_lightning" data-source="post: 16562333" data-attributes="member: 89227"><p>I am building this 2001 Lightning with a GT500 engine swap and a TR6060, Finished the mechanical work and it drives good, shifts good no issues there. Got done with Start up, idle and cruise tuning made sure stft's are on point and when I got up to 4k for the final cruise stft fine tuning i noticed the car would'nt rev past 4k rpm and the car cuts down or bogs down for a bit before going back to normal under 4k rpm. </p><p></p><p>so far I have swapped throttle bodies, cleaned out the MAF sensor, made sure there was no vacuum/exhaust or any type on leaks, spark plugs look good.</p><p></p><p>using FBMMOC2 on sct for strategy and I have tried other "stock" strategy codes with no difference at all.</p><p></p><p>mods are Full boltons (jlt cai,frpp 65mm TB, upper pulley, lower pulley,dual fans runing on a stand alone controller, 2" long tubes,dual in tank aeromotive stealth fuel pumps return style)</p><p> other than that everything else is stock including the injectors and I am running a FRPP ECU pack been able to datalog almost everything except for the Fuel pump duty cycle and the e.fans.</p><p></p><p>through out the log cruising, the fuel pressure is around 57~60 psi and once my foot goes slowly into the pedal the fuel pressure lowers to around 35~40 psi but if I try to floor it fuel pressure just drops to around 50~55 psi. now even if the wasn't enough fuel going into the engine I'd at least see it rev past 4k RPM. (so this might be another small issue i'll look into later)</p><p></p><p>I am using SCT Advantage III tuning it and I have tried out everything i know/remember and thought I might have missed something so feel free to point out what might cause this issue. </p><p></p><p>any ideas or questions are welcome.</p><p></p><p></p><p>thanks.</p></blockquote><p></p>
[QUOTE="uae_lightning, post: 16562333, member: 89227"] I am building this 2001 Lightning with a GT500 engine swap and a TR6060, Finished the mechanical work and it drives good, shifts good no issues there. Got done with Start up, idle and cruise tuning made sure stft's are on point and when I got up to 4k for the final cruise stft fine tuning i noticed the car would'nt rev past 4k rpm and the car cuts down or bogs down for a bit before going back to normal under 4k rpm. so far I have swapped throttle bodies, cleaned out the MAF sensor, made sure there was no vacuum/exhaust or any type on leaks, spark plugs look good. using FBMMOC2 on sct for strategy and I have tried other "stock" strategy codes with no difference at all. mods are Full boltons (jlt cai,frpp 65mm TB, upper pulley, lower pulley,dual fans runing on a stand alone controller, 2" long tubes,dual in tank aeromotive stealth fuel pumps return style) other than that everything else is stock including the injectors and I am running a FRPP ECU pack been able to datalog almost everything except for the Fuel pump duty cycle and the e.fans. through out the log cruising, the fuel pressure is around 57~60 psi and once my foot goes slowly into the pedal the fuel pressure lowers to around 35~40 psi but if I try to floor it fuel pressure just drops to around 50~55 psi. now even if the wasn't enough fuel going into the engine I'd at least see it rev past 4k RPM. (so this might be another small issue i'll look into later) I am using SCT Advantage III tuning it and I have tried out everything i know/remember and thought I might have missed something so feel free to point out what might cause this issue. any ideas or questions are welcome. thanks. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
Car won't rev past 3900 rpm (5.4L with FR ECU pack)
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