Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

injen cai + tune?

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Old 08-02-2013, 03:42 PM
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injen cai + tune?

i just got an injen cold air intake i was wondering if it was necessary to tune my car or can i just run with with just the cold air? someone told me after i get a cai you have to because the computer cant register the amount of new air coming in ? just want to know so i can start saving if i need to lol
 
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Old 08-02-2013, 04:48 PM
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No you don't need a tune. Your car will adjust to the air. I ran mine for 3 years before I had a tune but I had other bolt ons
 
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Old 08-02-2013, 04:53 PM
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I have full exhaust (art pipes and tanabe from there back) jwt popcharger, z tube, plenum spacer with no tune Im doing fine
 
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Old 08-02-2013, 04:54 PM
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It's certainly not necessary but it wouldn't hurt.
 
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Old 08-02-2013, 06:33 PM
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^ but keep in mind once you have everything you need for the tune. If you tune now you may only get 5-10. Wait to you have exhaust, HFC\TP, spacer (which I heard its very good for your car), and other all things
 
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Old 08-02-2013, 07:28 PM
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A tune will make a pretty big difference, just syncing the electronic throttle and smoothing out the fuel maps gives you a good bump in performance. I wouldn't recommend a full dyno tune if you think you'll end up doing some more mods in the future... But if you go the route where you buy the.cable and reflash it yourself then dial it in remotely with datalogs then you can just adjust it as you go and have a tuned car the whole time. Feel free to pm me if you have any questions on how it works
 
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Old 08-03-2013, 02:06 AM
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G35 sedan w/ too much money in mods
Originally Posted by Wi-Z_Sam
I have full exhaust (art pipes and tanabe from there back) jwt popcharger, z tube, plenum spacer with no tune Im doing fine
Take it from experience but you're now running dangerously lean. With all the breather mods you have you should get a tune to fix the fuel mixture issue among other things.

I think seymore will back me on this statement.
 
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Old 08-03-2013, 10:07 AM
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Originally Posted by Blue Dream
Take it from experience but you're now running dangerously lean. With all the breather mods you have you should get a tune to fix the fuel mixture issue among other things.

I think seymore will back me on this statement.
A tune will definitely be worth the $$. You don't know what you're missing until you do it!
 
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Old 08-03-2013, 11:45 AM
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Our cars have "learning" ecu's right? I cant remember but I think back in the day when I had just the injen CAI i just disconnected the negative terminal and pressed the brake pedal till there was no movement left and then re-attached the neg. terminal and started it up and that was supposed to do something like make the ECU re-learn my driving habits with the added mod?

Life is so much easier with Uprev lol
 

Last edited by Tukeeg35; 08-03-2013 at 11:46 AM. Reason: becuse **** you thats why
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