I finally got around to doing a few dyno pulls today. I needed to check out the A/F and such as the times I ran at the track earlier this year and the trap speed indicated more HP that I expected. On top of that I have just recently got worried about fuel and looked into fuel pumps. For some reason I did a 4 bar NISMO FPR and ecu mod. I thought is would be safer at higher pressure since I only had 555's. Do your research first. Now I find out the higher the FP the lower the flow. Duh… \ << This backslash is for you UNIX freaks out there.
Anyway this is it...Environment. 55-60' inside, NO fans, 30.3 pressure, 46%humidity,
93 oct pump gas@19 psi 1. 447.4HP, 426 ft-lbs Goofy pull that didn't start till after the peak 5500. Void:L
2. 440.2HP, 489 ft-lbs… Better but the rpm was missing on parts so I had to fix it for them. A/F was flat al across at 11.8:1. No need to tune this. The only thing was they couldn't get a good rpm reading without it breaking up. It keeps dropping in and out. I double looped the wire for them and all was well. Time to put in some C16 and turn up the boost. Approx 109 Oct mix 93 + 116 @ 25 PSI. Note: It didn't make 25 PSI. The best on the light load dyno I could get was 24 psi. Easy to get 25 under load but not on a dyno. 3. 556.1HP @ 438.6
4. 553.7HP @ 446.1 A/F was really strange, 12.5-13 flat. I richened it up across the board 6% and it only held it to 11.8 to 5000rpm and it went to 12.5-13. I think I need more fuel. I don't really see getting much better even with more fuel, this is pretty good for some little GT2530's. Will post the charts as soon as I can get to a scanner, Monday.
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