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Stock Block/Stock Head +7PSI, E85, NO TUNE+Wire Tuck+ABS Relocate (01/17/11)
#421
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With E85 550cc would be about the same as oem with pump gas. You'd have very small fuel trims in CL. You'd need to raise the fuel pressure to 70psig (700cc) for 300bhp. Pump gas is very different. IMO 550cc might be too big for the ECU alone. You may need a MAS signal modifier like your Neo to help keep the ECU happy.
IME the ECU does very well with up to 20% LTFTs and +/-10% STFTs but not very good beyond that. In theory the ECU can set a -25% LTFT and still trim another -20% STFT but it doesn't do it well. 550cc is 50% larger than stock. Lowering FP in vaccum would help. IMO you want to flow less than 500cc in vacuum or skew the MAF signal by say -15%.
IME the ECU does very well with up to 20% LTFTs and +/-10% STFTs but not very good beyond that. In theory the ECU can set a -25% LTFT and still trim another -20% STFT but it doesn't do it well. 550cc is 50% larger than stock. Lowering FP in vaccum would help. IMO you want to flow less than 500cc in vacuum or skew the MAF signal by say -15%.
Then even if I drop the FP in vacuum to say maybe 38-40psi would go much lower.
#422
Would the neo even work?? If the clamp is set at 4.7v or so and that is the signal the Neo would intercept so the Neo would have to give the ECU a new signal. If it gave a signal it would have to be greater than 4.7v correct? Would that just throw the 101 code anyways? or am I tottally not understaing this. I was under the impression the ECU cant see a signal greater than that.
If you did need to add a clamp it would go after the Neo and before the ECU.
#423
550cc @35psig would net 493cc flow rate
How much can your FPR raise FP?
Useful calculators here:
http://www.rceng.com/technical.aspx
#424
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550 - 370 = 180/370 = 49% more flow
550cc @35psig would net 493cc flow rate
How much can your FPR raise FP?
Useful calculators here:
http://www.rceng.com/technical.aspx
550cc @35psig would net 493cc flow rate
How much can your FPR raise FP?
Useful calculators here:
http://www.rceng.com/technical.aspx
If I set my BASE fuel pressure @ 42psi what will it be in vacuum when I attach the vacuum line???
With the OEM fuel pressure regulator, the base was 43.5psi right? Did the fuel pressure change under vacuum with the OEM FPR???
#425
It goes up pretty high - But I wouldnt really want to exceed 70psi max fuel pressure prob less.
If I set my BASE fuel pressure @ 42psi what will it be in vacuum when I attach the vacuum line???
With the OEM fuel pressure regulator, the base was 43.5psi right? Did the fuel pressure change under vacuum with the OEM FPR???
If I set my BASE fuel pressure @ 42psi what will it be in vacuum when I attach the vacuum line???
With the OEM fuel pressure regulator, the base was 43.5psi right? Did the fuel pressure change under vacuum with the OEM FPR???
The oem fpr doesn't see vacuum or boost. I've heard that it produces roughly 45psi at the rail.
Sorry but I have no idea how to setup a RR-FPR.
#426
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I was really asking about the FPR's range. Can it do 35-55psi? 35 might keep the ECU happy and 55 would be good for 350bhp with 550s.
The oem fpr doesn't see vacuum or boost. I've heard that it produces roughly 45psi at the rail.
Sorry but I have no idea how to setup a RR-FPR.
The oem fpr doesn't see vacuum or boost. I've heard that it produces roughly 45psi at the rail.
Sorry but I have no idea how to setup a RR-FPR.
The FPR I have is a 1:1 rising rate so If I ran my base pressure at say 40psi and my vacuum/idle fuel pressure is at 35 (using this number just for this equation) and I put 10psi of boost pressure on the turbo- the max fuel pressure it would be is 50psi.
#431
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Just picked up a 2011 Hyundai Sonata today! Looks great compared to other Hyundais I remember in the past. I will post some pics up later. Not doing much to the Sonata since I have the tC for fun. Butttt I did order 12" hifonics sub 1100 mono boss amp. Going to put 20% tint all around and plan to de-badge the rear trunk. Also going to remove the stock hub caps and roll with the steelies. God I love the new car smell.
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