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I have a cortex programmer on the way. Now I know i have to update it when I get it but how much of adiference will this make on my truck. I have a set of 35's on the truc and I am trying to make up some of the power loss, is there any specific tune that will help me running this big tire?
 

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I spoke to a guy who has 35's and added a Hypertech programmer, he said he can use overdrive again and overall it made a nice difference. The guys who have Superchips are all loving the unit too and I would imagine you need to try each tune and see which fits your driving needs.
 

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I have a cortex programmer on the way. Now I know i have to update it when I get it but how much of adiference will this make on my truck. I have a set of 35's on the truc and I am trying to make up some of the power loss, is there any specific tune that will help me running this big tire?
The BEST tune for the best performance out of your ride would be running 93 octance with teh 93 tuning and the a 2 degree timing advance with the tuner unless you allready have it done. I think with all that and the the WOT setting you'll probably be moving just as fast as before you got the 35s, got any pics?
 

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I run the 91 performance tune with the Cortex.
I tried the 93 when it first was released and there really wasn't a noticeable difference (to me) so I switched back to the 91.
Plus 91-92 octane is at every station I go to, with the 93 only certain stations carry it in this area.
 

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I ran 93 for a while, then got sick of driving a 370Z with 4 wheel drive. There is no bottom end at all on this tune but it sure hauls *** past 3800RPM.
I run mine on tow tune all the time as there is a dramatic increase in power at 2k, however it does fall a bit on top.
Now if they could put both tunes in 1 that would be sick!!
 

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I ran 93 for a while, then got sick of driving a 370Z with 4 wheel drive. There is no bottom end at all on this tune but it sure hauls *** past 3800RPM.
I run mine on tow tune all the time as there is a dramatic increase in power at 2k, however it does fall a bit on top.
Now if they could put both tunes in 1 that would be sick!!
did you try the 2 degree advance in addition to 93 tune? I run that combo, and have tire smoking bottom end now where I only had a squeak stock. 5 speed auto
 

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did you try the 2 degree advance in addition to 93 tune? I run that combo, and have tire smoking bottom end now where I only had a squeak stock. 5 speed auto
Yeah still seemed slow off idle. I have been running the tow tune for 4 months now, I will flash it to 93 and see how it feels again.
 

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Just to remind me...
What year did the 2 deg. advance stop working..
I thought it was the 2008+ ?
 

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did you try the 2 degree advance in addition to 93 tune? I run that combo, and have tire smoking bottom end now where I only had a squeak stock. 5 speed auto
I can hardly get my to squeak much at all.. Dry roads, wot from the line, no power-braking... I've tried 91, tow tune, 93, and 93 with time of 1,2, and 3... Stock tires, Volant cai, and exhaust work.. Hmmmm but after about 3k it picks up power pretty good... Dont know??? 2009 kc, 5 auto..
 

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Is the 2 degree timing advance the same as Spark Advance? because I did see that (Spark Advance) in mine yesterday when I was upgrading to the 91 Octane tune from the 87 and I didn't know what it was so I didn't want to screw with it>
 
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