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12-09-2015, 09:33 PM
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#1 |
 
Drives: 2014 ZL1 Join Date: Dec 2015
Location: Soperton, Ga
Posts: 104
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Re-tune after upper pulley swap?
My car has already been tuned for my current minimal mods, headers and cai, is it a requirement to retune after I change the upper pulley? Should I get 2.38 or 2.55? I do not plan on swapping the lower pulley until I do heads and cam, which will be a year or so. Thanks!
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12-09-2015, 09:47 PM
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#2 |
 
Drives: 2014 ZL1- Summit White M6 Join Date: Aug 2014
Location: Thornton, Colorado
Posts: 462
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Anything over 5% overdrive and you will need injectors too. Not 100% sure if 5% OD is the maximum on stock injectors.
And yes you will need a retune. You are adding boost and you will need to compensate for that in the tune
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750whp @ 13psi Garage Built on Jack Stands.. 850++ 100 shot of sauce
 Last edited by ZL1Kid_AL; 12-09-2015 at 09:51 PM. Reason: Spelling error |
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12-10-2015, 11:19 AM
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#3 | |
 
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,223
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Quote:
A better way to add boost and less work is the Lower ATI super damper with choice of 5-10-18-22.5 or 28% interchange able pulleys. A smalller Upper requires blower removal and will induce belt slip. We stock everything ZL-1 and provide Free custom tuning with purchase of our power packages. Ted.
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www.jannettyracing.com
Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com |
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12-10-2015, 11:38 AM
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#4 |
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Drives: 2014 ZL1 Join Date: Dec 2015
Location: Soperton, Ga
Posts: 104
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Thanks guys, I was hoping to not re tune so soon as I just got it tuned after headers and cai, but it is what it is.
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