PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

tuning issue or somthing else?

Old Aug 20, 2007 | 10:53 AM
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Default tuning issue or somthing else?

2000 ls1 firebird it ran 12.85-13.00 on lid,hptuners,lts,ory,magnaflow,on street tires,my speed was 111,i put a tr224 cam,fully built trans,ss3600,now the car runs 12.25-12.50 at 109 do you think it's in the tune or something else?
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Old Aug 20, 2007 | 12:22 PM
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The tune will play heavily on the performance but, what were the DA's on both runs?
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Old Aug 20, 2007 | 01:32 PM
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Definitely a tune after that cam change would be very wise.

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Old Aug 20, 2007 | 04:08 PM
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If you are on a stock tune with all of those mods you might wanna be a little cautious there (you know, the opposite of RACING on a track) until you at LEAST get some kind of idea what your AFR is.
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Old Aug 20, 2007 | 06:47 PM
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what rear gear do you have? I would definitely retune after a cam swap though
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Old Aug 21, 2007 | 08:26 AM
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i had it dyno and tuned after the cam was install,but not since the stall and the tranny built,a/f is at 12.6. just wondering why a lost 2 mph after the cam swap i thought i would gain 3-5 mph.
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Old Aug 21, 2007 | 10:45 AM
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IF your converter is loose it may be giving up some MPH from slip on the high side of the track
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