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going to tune/dyno, help me on a/f ratio and maybe timing

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going to tune/dyno, help me on a/f ratio and maybe timing

Old 09-04-2003, 07:37 PM
  #1  
0.5 BAR
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Default going to tune/dyno, help me on a/f ratio and maybe timing

Ok, so i watn this bitch at 170whp and nice 11.5-12 a/f

anyhow, i only know so much.. i know to keep it around 12 when at boost and maybe 11.5 near the top for safety (i'm going for conservative tune)

so can you guys posts some dyno graphs or tell me what a/f ratio should i run for:

idle
higher idle
not boosted but spooling in vacuum
spooling from 0psi to max psi (7.5)

and should i get a feel on my car when it fully spools etc..so i assume do a 3rd or 4th gear run on the street to test out the spool rpms?? it spools diff sometimes, usually though full boost is latest by 3500... but sometimes 3000.. dunno

for ign, i'm retarded around 6 deg from the normal timing.... should i retard more or what... i'm using smc 500 so it advances timing..

i hear peopole just retarding 2-4 deg but the smc manual says at least 6-8 or more....

help me out so i can tune this bitch and put it up and show how good the smc 500 is..

(btw, my idle is pretty good., never stalls and hardly pulses.. i idled for 15 min once and no probs.)
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Old 09-04-2003, 10:11 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

help
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Old 09-04-2003, 10:31 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

idle afr usually just bounces between lean and rich. I don't have any idea about the rest.
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Old 09-05-2003, 01:29 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

help
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Old 09-05-2003, 08:18 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

please help or at least post dyno charts of boosted d series engines
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Old 09-05-2003, 11:14 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

Here's some charts of boosted D series:

http://www.norcalcrx.org/dyno
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Old 09-06-2003, 07:16 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

doesn't do anything without a/f
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Old 09-06-2003, 07:39 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

The hell you talking about. The a/f graph is right on the bottom. Make sure you're looking at the turbo graphs, most of the normal D series graphs don't have the a/f. Click the forced induction link!
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Old 09-06-2003, 09:59 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

oh ---- me, i just saw "d series" then clicked
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Old 09-06-2003, 10:59 PM
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Default Re:going to tune/dyno, help me on a/f ratio and maybe timing

LOL
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