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What's the real difference in fuel econony?

CJAff

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So I've got a VY with a V6 Ecotec and I want to get the 12mm plenum spacer, 12mm manifold insulator, MACE CAI, and the 82° thermostat sensor. What kind of fuel economy improvement am I likely to see?

I'm not looking to get these purely for the sake of fuel economy improvement, but I just want to get an idea of what to expect in that respect.
 

Super_Low 91

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There is so many variables, for eg; you right foot, the type of driving you do on a daily basis etc. I wouldn't expect a noticeable difference with those mods but feel free to correct me if i'm wrong MACE.
 

timd29

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In my VS, 12mm PS an 12mm MI gave me a 1.4L/100 improvement on a mainly highway trip 600k's each way. havent worked it out for just city yet.
Already had the CAi installed never did a comparison for that part. don't have the thermo so no idea on that.
 

Silver6

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I'm doing this to my 06 VE SV6 tomorrow (weather permitting) Will let you all know how I go when I do it. Just worried about clearance when I put it all back on :/ Using the instructions from the Gregory manual to pull it apart as its more detailed. Might as well change my plugs whilst I do it.
 

commodore665

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In my VS, 12mm PS an 12mm MI gave me a 1.4L/100 improvement on a mainly highway trip 600k's each way. havent worked it out for just city yet.
Already had the CAi installed never did a comparison for that part. don't have the thermo so no idea on that.

That's roughly what I got on my VX with the same mods , but with, high ratio rockers, throttle body ,and tune , I don't think the 82 degree thermostat makes a great deal of difference , very much depends on how you drive , heavy right foot , heavy consumption , drive it sensibly and you'll get good economy , it's not rocket science .
 
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