Precursor: Been searching and researching galore for returnless fuel upgrade options, would like input on retaining returnless fuel solutions to reach 480-500whp.
Precursor #2 - I'm an avid Hondata self-tuner (3 years, 35+ tunes on s300/Flashpro/etc...), so please only provide input if you have AEM/Flashpro running 06+ RETURNLESS fuel setups.
Current setup:
- 2006 AP2, stock block (oem headgasket)
- Hondata Flashpro
- FBM stage 2 kit http://www.s2ki.com/s2000/topic/830621- ... -turbo-kit
- ID1000 Injectors
- Full Blown FB340 Fuel Pump
- e85 fuel only
- FBM sidewinder mani
- PTE5857 journal
- 10.5 psi --> 8.5 psi @ redline
- 432whp/317wtq (good numbers for e85 on this mid frame turbo, I realize that)
- 3" downpipe into stock exhaust (thus the drop from 10.5 to 8.5psi, not my issue/question currently)
- Problem #1 - I'm hitting 95% duty cycle at 6500 rpm (10psi) and 100% duty cycle from 6900-8000 rpm (10.5 to 8.5 psi gradual drop, intentional)
- Problem #2 - LJ (phenominal tuner at Full Blown Motorsports) set my FP calibration to 900cc injectors (actual = 1000cc) w/ *25% overall fuel trim add) Which I've learned is bad per this http://www.hondata.com/forum/viewtopic.php?f=19&t=13479
- Question #1 - Is it a good idea to raise fuel presure with a fuel pump rewire to ~14v? (pros/cons/alternatives {including going fuel return system})
- Question #2 - Will a Flashpro retune help the 100% duty cycle? (SPECIFICALLY by eliminating the dreaded overall fuel trim value and implementing that into main low/high fuel tables) / again I reference this Hondata Forum thread http://www.hondata.com/forum/viewtopic.php?f=19&t=13479
Many thanks to informed and experienced tuners' responses.
jun1or
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