jmakado
15+ Year Contributor
- 172
- 2
- May 7, 2004
-
Capistrano Beach,
California
well i finally got to the dyno and did some tuning. i'll list full mods after the numbers for those interested....sorry i can't post the sheet, but i have no scanner. they will be up at www.rmdsm.org shortly and i will provide a link. anyway, here we go:
PUMP GAS (91 octaine) @19psi, temp.- 96.68*
PEAK HP 297.37 @5700rpms
PEAK TORQUE 294.15 @4300rpms
A/F of 11:1 untill 4600rpm's and then 10:1 on up. not sure why we had to run so rich? the car made more power at this level though. i think we were just heatsoaking really bad and had to dump lots of fuel to keep from knocking.
RACE GAS (105 unleaded) @19psi, temp.- 99-100*
PEAK HP 319.38@5700rpms
PEAK TORQUE 303.95@4400rpms with 290-300 available from 3800-5800rpms.
A/F of 11-11.5 to 1 with a strange and sharp dip to 10 to 1 from 4600-5200rpms. again, we had to run fairly rich to keep knock and egt's at bay. i think the heat was also a factor in this test.
as you can see i still have some tuning to do but i am getting closer! if you use a 22% driveline loss factor, that's 389hp at the crank (i know not the *most* accurate way)........ not bad for a turbo that is only supposed to support 340HP.
any questions? comments? flames?....j/k
PUMP GAS (91 octaine) @19psi, temp.- 96.68*
PEAK HP 297.37 @5700rpms
PEAK TORQUE 294.15 @4300rpms
A/F of 11:1 untill 4600rpm's and then 10:1 on up. not sure why we had to run so rich? the car made more power at this level though. i think we were just heatsoaking really bad and had to dump lots of fuel to keep from knocking.
RACE GAS (105 unleaded) @19psi, temp.- 99-100*
PEAK HP 319.38@5700rpms
PEAK TORQUE 303.95@4400rpms with 290-300 available from 3800-5800rpms.
A/F of 11-11.5 to 1 with a strange and sharp dip to 10 to 1 from 4600-5200rpms. again, we had to run fairly rich to keep knock and egt's at bay. i think the heat was also a factor in this test.
as you can see i still have some tuning to do but i am getting closer! if you use a 22% driveline loss factor, that's 389hp at the crank (i know not the *most* accurate way)........ not bad for a turbo that is only supposed to support 340HP.
any questions? comments? flames?....j/k
I need a FMIC
..... the FMIC would get hot enough to leave a bar and plate "pattern" on the back of my hand on the hot side but stay *fairly* cool on the cold side. with some cooler weather i think that 330-340 at the wheels is reasonable.
oh ya, the dyno is a standard dynojet dyno and they had done multiple cars before and after me....as for the injectors, 560's support much more than people give credit for. with a piggy-back (afc as i have), you will gain some timing with larger injectors....but too much timing and you move to a *lesser* fuel map and lose power...too small of an injector and you hit fuel cut. the key is finding that perfect middle ground. that's why i think my car did so well, all my parts are matched to each other well...no monster 255 fuel pump to overrun the stock FPR, no huge 850cc injectors to mess up my fuel maps, no huge 60-1 turbo or cams to move my powerband out to 50,000rpms....ok, a little exageration, but you get my point. i encourage the questioning of my numbers though and in no way am i offended.