CrankingPW,Accel enrichment+fuel pressure
Hi,
Stupid questions but I really want to do this right I swapped my 1.6l injectors (230cc) to 305cc. I also swapped Vortech FPR to Fuelab AFPR. Questions: - MSPNP manual says that I need to change at least Req_fuel, accel enrichment and cranking pw settings. Req_fuel and Cranking pw are easy to do with calculator but what do I need to do with accel enrichment: -Which is better, tps or map based, I don't have AFM anymore. -Do i just need to change Value on tps-based, not Rate ? :O If i rise the base fuel pressure 3bar (~43psi), to 4 bar (~58psi) It of course change the results. Is it this way : 3 bar = 305cc 4 bar = 352cc (+15,5%) So I need to do accel enrichment and cranking pw settings according to that 352cc ? |
REQ_FUEL:
305s = 32.6% larger if REQ_FUEL = 13.2 then new REQ_FUEL = 9.9 (33% less) Cranking: New Cranking PW = (Old PW - 1) / % change + 1 example: 40*C = 8.3 (8.3 - 1) / 1.33 + 1 = 6.5 rinse and repeat. Enrichments: should stay close, going to have to tweak as you go. |
So with my newb math it should go this way:
REQ_FUEL 352cc (305cc with 4 bar pressure) vs 230 = 53% larger if REQ_FUEL = 13.2 then new REQ_FUEL = 6.2 (53% less) Cranking New Cranking PW = (Old PW - 1) / % change + 1 example: 40*C = 8.3 (8.3 - 1) / 1.53 + 1 = 5.8 rinse and repeat. Enrichments: should stay close, going to have to tweak as you go. Confirm this and I'll be happy :makeout: |
that's probably how I'd do it. I'm running 10psi more fuel pressure than stock. I left my req_fuel alone and just touched my cranking PWs, same injectors.
|
Thank you for the replies =) You're the master ;)
|
nah. i know a little bit of everything. not that useful.
|
All times are GMT -4. The time now is 03:30 AM. |
© 2024 MH Sub I, LLC dba Internet Brands