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Pulling like a MF...

Ok, I've had the Z since March. It's my weekend / project car (see current mods). As a matter of fact, I loaned the car to my cuz for a

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Old 09-08-2014, 06:53 AM   #1 (permalink)
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Ok, I've had the Z since March. It's my weekend / project car (see current mods). As a matter of fact, I loaned the car to my cuz for a few weeks shortly after I installed the FI exhaust. So, when I got the Z back, I did the Drop-in filter mod... easy-peasy. I didn't feel any noticeable difference in the butt dyno. So, during the Labor Day weekend, I did the DRL mod. I disconnected the battery to do this mod. I completed the DRL mod with no problems and re-connected the battery. [side story] I also found the source of an occasional vibration while I doing the DRL mod. I found a 3/8" x 6" extension in between the battery and fire wall. I obviously missed it when I installed the PPE LTH [end side story]. Anyway, the ecu must have learned /adjusted to the mods because the Z is pulling like a mother******!!! There used to be a noticeable 'dead spot' in HP in first gear...pre-mod. Now, it's all but gone. I'm seriously concerning the post-maf tubes as my next mod.
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Old 09-08-2014, 03:09 PM   #2 (permalink)
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Think I remember reading about the DRL mod, but find nothing when I search for it. Any help? Love to improve that dead spot in the throttle response right off idle....or are you talking about daytime running lights? I have K&N drop in's, and cat back FI exhaust, and it didn't do a damn thing form that damn throttle dead spot.

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Old 09-08-2014, 03:17 PM   #3 (permalink)
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Quote:
Originally Posted by Agent K View Post
Ok, I've had the Z since March. It's my weekend / project car (see current mods). As a matter of fact, I loaned the car to my cuz for a few weeks shortly after I installed the FI exhaust. So, when I got the Z back, I did the Drop-in filter mod... easy-peasy. I didn't feel any noticeable difference in the butt dyno. So, during the Labor Day weekend, I did the DRL mod. I disconnected the battery to do this mod. I completed the DRL mod with no problems and re-connected the battery. [side story] I also found the source of an occasional vibration while I doing the DRL mod. I found a 3/8" x 6" extension in between the battery and fire wall. I obviously missed it when I installed the PPE LTH [end side story]. Anyway, the ecu must have learned /adjusted to the mods because the Z is pulling like a mother******!!! There used to be a noticeable 'dead spot' in HP in first gear...pre-mod. Now, it's all but gone. I'm seriously concerning the post-maf tubes as my next mod.
So your point is that we should disconnect the battery in order to reset the ECU?
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Old 09-08-2014, 09:16 PM   #4 (permalink)
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Quote:
Originally Posted by olddudesrule View Post
Think I remember reading about the DRL mod, but find nothing when I search for it. Any help? Love to improve that dead spot in the throttle response right off idle....or are you talking about daytime running lights? I have K&N drop in's, and cat back FI exhaust, and it didn't do a damn thing form that damn throttle dead spot.
Yeah, daytime running lights (DRL). Nissan added the LED DRLs on the 2013+ models.

My biggest noticeable gain came from the PPE LTH then FI exhaust. The drop-ins seems to address the 'dead spot' issue at take-off.
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Old 09-08-2014, 09:28 PM   #5 (permalink)
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So your point is that we should disconnect the battery in order to reset the ECU?
Yes. When I had my Audi, I installed a CAI. The instructions in the kit specified the procedure on how to 'learn' the ECU to the change in air flow. I know I would probably get more gains with a tune and I might get Z1 to do it next year.
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Old 09-08-2014, 09:54 PM   #6 (permalink)
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I only have a FI exhaust. I did not think I needed to do anything. I though the ECU just adjusts by itself.
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Old 09-08-2014, 11:28 PM   #7 (permalink)
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The car should adjust over time. I guess disconnecting the battery may make it learn a little faster. But it doesn't matter much.
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Old 11-25-2014, 09:34 PM   #8 (permalink)
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Ok, this car is INSANE!!

I was playing around with the Z...wanted to get it close to redline. So I'm in 2nd gear, going straight, winding it out. I shift to 3rd and the rear end steps out... Whoa!! I didn't expect that. I had to let off to straighten her up. Can't wait till I get a tune to make more ponies. Seriously thinking about tracking this car next year.
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Old 11-25-2014, 10:04 PM   #9 (permalink)
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Probably just due to the colder temps.
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