Questions about CAI & Grounding Kit
Joined: Oct 2002
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From: Ca, USA, Torrance
Questions about CAI & Grounding Kit
HI,
I want to put in a CAI but i don't want to kill my warranty. If i swap it in and out meaning out before a service, could they find out that i had a CAI in there before from the computer or from something else?
Also how about other modifications in the engine?
Would grounding hurt the warranty somehow? Does anyone want to post step my step instructions of where to put the wires?
Thanks alot guyz!! Sorry for being such a newbie. I know cars but not in the engine bay! THANKS AGAIN!
<P ID="edit"><FONT class="small"><EM>Edited by gsedanman on 04/16/03 02:41 AM.</EM></FONT></P>
I want to put in a CAI but i don't want to kill my warranty. If i swap it in and out meaning out before a service, could they find out that i had a CAI in there before from the computer or from something else?
Also how about other modifications in the engine?
Would grounding hurt the warranty somehow? Does anyone want to post step my step instructions of where to put the wires?
Thanks alot guyz!! Sorry for being such a newbie. I know cars but not in the engine bay! THANKS AGAIN!
<P ID="edit"><FONT class="small"><EM>Edited by gsedanman on 04/16/03 02:41 AM.</EM></FONT></P>
Joined: Jun 2002
Posts: 30,341
Likes: 9
From: Cambridge, Ont. Canada
Re: Question about CAI
Here's the instructions I've got from InSaNeAmine in Louisianna. I've had many requests for these so have decided to post.....Print them out and enjoy.............[img]/w3timages/icons/smile.gif[/img]
<font color=green>GSM</font color=green>
41443-Grounding Kit Instructions 001.jpg
<font color=green>GSM</font color=green>41443-Grounding Kit Instructions 001.jpg
Joined: Jun 2002
Posts: 30,341
Likes: 9
From: Cambridge, Ont. Canada
Re: Question about CAI
Joined: Jun 2002
Posts: 30,341
Likes: 9
From: Cambridge, Ont. Canada
Re: Question about CAI
Joined: Jun 2002
Posts: 30,341
Likes: 9
From: Cambridge, Ont. Canada
Re: Question about CAI
Joined: Jun 2002
Posts: 30,341
Likes: 9
From: Cambridge, Ont. Canada
Re: Question about CAI
Helps with Idle smoothness, smoothness of engine performance at all speeds, aids in starting, prolly helps gas mileage (minimally), may help with shifting in an automatic, there seems to be a host of benefits with this install. Personally I've noticed the starting, and smoothness so far and recommend the install.
For more info there's lots available in different forums here, do a search and read up on it bro.---Coupe, Sedan, Tech.
[img]/w3timages/icons/smile.gif[/img]
<font color=green>GSM</font color=green>
For more info there's lots available in different forums here, do a search and read up on it bro.---Coupe, Sedan, Tech.
[img]/w3timages/icons/smile.gif[/img]
<font color=green>GSM</font color=green>
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Registered User
Joined: Dec 2002
Posts: 200
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From: Bay Area
Re: Questions about CAI & Grounding Kit
All of the CAI kits that have had their photos published in this website and the my350Z.com website eliminate the stock cold air intake box and place an after market air filter near the radiator outlet. For the life of me I don't understand why they call it "cold air intake" since it is exposed to 160F-170F air from the radiator. The stock intake takes cold air from outside the engine compartment. Any claims of increased HP specific to the G35 are probably due to the substitution of the boxy intake hose between the MAF and the throttle body with a length of smooth tubing. The 350z has a similar smooth hose. Installing this hose in the G35 may give you the same benefit at less than half the cost of an after-market CAI as well as looking as if it came from the factory. The after-market air filter may yield some gain in HP but it may not provide the same level of protection as the stock filter.
There has not been any convincing data published on this website or the my350Z.com website about the benefits if a grounding kit. All of the perceived benefits have been based on "feel". Sure, some dyno charts have been published but the HP gained is buried in the variance of several dyno runs. If you look at a typical chart you will notice that there are many peaks and valleys in the chart (the line looks squiggley). In one case the HP gain was measured from the peak of one run to the valley of the previous run! I measured the resistance from the negative battery post to several points and accessories on the engine of my G35 Sedan. All of the resistances measured 0.0 to 0.1 ohms. Adding grounding cables from the battery to these points did not change the resistence. FWIW, I noticed the same claimed benefits, but very subtle, after I changed the original factory fill oil for BMW's version of Castrol Syntec (that is another subject). The technicians at the motor lab where I work say that poor grounding is usually above 3 ohms resistence when engine electrical problems appear. This is supported by several DIY websites.
CAI and grounding kits look very racy but they appear to be mostly Christmas ornaments. I'd save my money.
<font color=blue>Dan</font color=blue><P ID="edit"><FONT class="small"><EM>Edited by dspisak on 04/16/03 12:15 PM.</EM></FONT></P>
There has not been any convincing data published on this website or the my350Z.com website about the benefits if a grounding kit. All of the perceived benefits have been based on "feel". Sure, some dyno charts have been published but the HP gained is buried in the variance of several dyno runs. If you look at a typical chart you will notice that there are many peaks and valleys in the chart (the line looks squiggley). In one case the HP gain was measured from the peak of one run to the valley of the previous run! I measured the resistance from the negative battery post to several points and accessories on the engine of my G35 Sedan. All of the resistances measured 0.0 to 0.1 ohms. Adding grounding cables from the battery to these points did not change the resistence. FWIW, I noticed the same claimed benefits, but very subtle, after I changed the original factory fill oil for BMW's version of Castrol Syntec (that is another subject). The technicians at the motor lab where I work say that poor grounding is usually above 3 ohms resistence when engine electrical problems appear. This is supported by several DIY websites.
CAI and grounding kits look very racy but they appear to be mostly Christmas ornaments. I'd save my money.
<font color=blue>Dan</font color=blue><P ID="edit"><FONT class="small"><EM>Edited by dspisak on 04/16/03 12:15 PM.</EM></FONT></P>
Registered User
Joined: Mar 2003
Posts: 19
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From: Arizona
Re: Questions about CAI & Grounding Kit
Basic Observations from an old goat.
As a newbie myself, I'm not familiar with all the abbreviations and insider spellings of pertinent concepts or functions. I am however well versed in automotive ideas from another generation of performance cars. Good grounding can help with the usual problems encountered with electrical systems, such as battery charging, coil energy and radio interference. These were, in my day, subject to the ultimate want of the vehicle owner. Either good tunes (AM/FM/8Track) or more "R's" at the track. If you wanted better radio sound you stayed with those horrible carbon string plug wires and some form of alternator, generator whine suppression. Need more RPM's? Go with the solid wire plug wires and just forget the tunes. The standard ground to frame was supported by several small diameter cables and maybe one braided wire mesh strap to the firewall from the engine block. That's because we had to use ballast resisters, capacitors and miles of wire.
Todays vehicles use better wire and printed circuits to cut down on the amount of wire used. The unibody design allows for greater ground simply by the construction used. The frame is the body and you might have two cradles, one for the engine and one for the drive axle depending on whether you have front or rear drive. Okay so much for the age of the dinosaur stuff.
I have read with interest the many forum(s) contents and I will admit that many of you are well informed, intelligent and rational. So lets think about what it is we are trying to do. I have read several comments and questions about hard starting and rough idle. I have noticed that if the car is started 5 to 7 seconds AFTER the ignition is turned on, the start is positive and the engine idles very smoothly. Letting the electronics warm and think for a few seconds seems to be a good idea. Yes, electronics need to warm up! Ask any ARRL member. And no, I don't think extra ground cables no matter how good the materials used will make a difference. Added cables will not affect your warranty, engine mods that are obvious will, this includes the add ons you TAKE OFF before service. If you have to think about an add on it's probably going to cost you. This should NOT include an aftermarket air filter as long as the original plumbing is used.
Experiencing problems? Rattles? Things that go "bump" in the night?
Consider the gasoline you use. Same brand all the time? Same octane level? How about that injector cleaner you just added? Stock filter? K&N? Strange noise? Did you check the door pouches? Ash tray, glove and NAV boxes? I purchased a wheel lock set and put the KEY in the trunk with the lug wrench. Rattle rattle DUH!
Yes, I know I tend to ramble. But it will get you to THINK, and that after all is the best any of us can do, right?
Chris
He's dead Jim. You get his phaser and I'll grab his wallet!
As a newbie myself, I'm not familiar with all the abbreviations and insider spellings of pertinent concepts or functions. I am however well versed in automotive ideas from another generation of performance cars. Good grounding can help with the usual problems encountered with electrical systems, such as battery charging, coil energy and radio interference. These were, in my day, subject to the ultimate want of the vehicle owner. Either good tunes (AM/FM/8Track) or more "R's" at the track. If you wanted better radio sound you stayed with those horrible carbon string plug wires and some form of alternator, generator whine suppression. Need more RPM's? Go with the solid wire plug wires and just forget the tunes. The standard ground to frame was supported by several small diameter cables and maybe one braided wire mesh strap to the firewall from the engine block. That's because we had to use ballast resisters, capacitors and miles of wire.
Todays vehicles use better wire and printed circuits to cut down on the amount of wire used. The unibody design allows for greater ground simply by the construction used. The frame is the body and you might have two cradles, one for the engine and one for the drive axle depending on whether you have front or rear drive. Okay so much for the age of the dinosaur stuff.
I have read with interest the many forum(s) contents and I will admit that many of you are well informed, intelligent and rational. So lets think about what it is we are trying to do. I have read several comments and questions about hard starting and rough idle. I have noticed that if the car is started 5 to 7 seconds AFTER the ignition is turned on, the start is positive and the engine idles very smoothly. Letting the electronics warm and think for a few seconds seems to be a good idea. Yes, electronics need to warm up! Ask any ARRL member. And no, I don't think extra ground cables no matter how good the materials used will make a difference. Added cables will not affect your warranty, engine mods that are obvious will, this includes the add ons you TAKE OFF before service. If you have to think about an add on it's probably going to cost you. This should NOT include an aftermarket air filter as long as the original plumbing is used.
Experiencing problems? Rattles? Things that go "bump" in the night?
Consider the gasoline you use. Same brand all the time? Same octane level? How about that injector cleaner you just added? Stock filter? K&N? Strange noise? Did you check the door pouches? Ash tray, glove and NAV boxes? I purchased a wheel lock set and put the KEY in the trunk with the lug wrench. Rattle rattle DUH!
Yes, I know I tend to ramble. But it will get you to THINK, and that after all is the best any of us can do, right?
Chris
He's dead Jim. You get his phaser and I'll grab his wallet!
Registered User
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Re: Questions about CAI & Grounding Kit
The 7th wire design is strictly for auto cars correct?
Autotuner.org Home of Hulk Hogan's Supra and a skyline 240sx
Autotuner.org Home of Hulk Hogan's Supra and a skyline 240sx
Joined: Jun 2002
Posts: 30,341
Likes: 9
From: Cambridge, Ont. Canada
Re: Questions about CAI & Grounding Kit
That's right Marcel, the 7th wire goes from the I/M to the A/T.
M/T's as far as I know are non electronic, so would not benefit from grounding. Enjoy....[img]/w3timages/icons/smile.gif[/img]
<font color=green>GSM</font color=green>
M/T's as far as I know are non electronic, so would not benefit from grounding. Enjoy....[img]/w3timages/icons/smile.gif[/img]
<font color=green>GSM</font color=green>
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