CAI causing a loss in HP/TQ??
Originally Posted by RebelinRI
It's all about flow. Don't get all crazy over temp. Only time it'll be of concern will be at the lights. Once you're moving it's a different story. My $.03
I'd be concerned about intake temps if you're into drag racing because here's the scenario. Your car is sitting in the staging lanes waiting to go. You're sitting for 5 to 30 minutes+, sometimes with the engine on. The underhood temps are around 130-145 degrees. If you've got an exposed intake like a POP, CAI, or Stillen CAI, the intake temps will be at or near underhood temps. You finally get to stage. The lights come down and you're off. However, the ECU sees that the intake temps are 130+ degrees therefore it's pulling timing and adding fuel to keep the motor from detonating. Your ECU is basically sucking out a lot of HP/TQ and 1st gear is a bit boggy. By 60mph or so, the hot air has cleared out of the engine compartment and the intake temps are near ambient. Now your car is finally making the power it should. The problem is, your 1st gear acceleration wasn't as strong as it should have been therefore your 60', 330', and 1/8 mile times suffered as a result.
Trust me Dave I hear you. Most people don't drag race per say, so if they're just driving around and decide to hit it........ well we could argue this back and forth but one needs to decide if it's all the hype or fact and then, how does it effect me and my driving. That's all I'm saying. Besides any good drag racer only fires up the car just before it's his turn.
C'mon Dave you knew I was going to get a shot in there if I could.
C'mon Dave you knew I was going to get a shot in there if I could.
Originally Posted by DaveB
What's your opinion for the Amsoil OEM replacement filter? I've ordered one to replace my OEM paper filter. I don't expect any additional power, but if it's anything like my old K&N filter, there may be an additional sound increase.
haha again this topic is going to get beaten to death. Everyone on here hates the CAI for some reason...idk. I have one and probably have one of the faster coupes on this site for the mods. Mine has given me nothing but great gains.
-Sean
-Sean
Originally Posted by fortified
Seems to be a good filter, plus it's long life and can be cleaned with low pressure shop air. Another big plus, no oil! Not sure on the sound, doubt it would be very noticeable.
check out the Streamline SE
Dry Media (non oiled) Elements
Pro’s: Air flow is much better then the OEM filters initially. These filters are also washable and reusable and involve no messy oiling procedure. All that is required is a hand wash and thorough drying period.
Con’s: The air flow decreases as the filter loads up since for all intent purposes, this type of filter is very similar to the stock filter. But in order to make this filter flow so well without the benefit of a solution (such as oil) to retain particles, the initial filtering efficiencies are very bad. Therefore, the filtration efficiencies will increase as the filter is used more as debris is collected and fills the voids, but the performance gains are lost eventually.
Oiled Cotton Media Elements
Pro’s: Air flow is much better then OEM filters. These filters are also washable and reusable and usually require a manufacturer specific restoration kit. Oiled media filters are the most prevalent and come in all different levels of quality due to different manufacturing techniques and designs. The specific filter media and oil additives used contribute greatly to the air flow and filtering properties and vary greatly across the realm of different product offerings. Air flow is maintained linearly as filter loads up with dust and debris as compared to the exponential restriction graph of the paper element. These filters are also capable of catching very small particles and depending on the manufacturer, can even rival the OEM paper elements. However, keep in mind, that not all oiled cotton media filters are created equally.
Con’s: These filters use an oiled cotton media which when over oiled, whether from the factory or by the restoration process, has been attributed to the fouling of the MAF’s used on OBDII controlled cars. The restoration process involves cleaning the cotton media with harsh chemicals and can be messy. After cleaning of the cotton media, oil must be reapplied to the media which can be easily over applied by the overly zealous. These filters has have less dust loading capacity then the stock OEM filters (as measured by the ISO 5011 test) however, their capacity is more then capable of lasting upwards to 20K miles.
Read this for full text of filter info: Air Filter Comparisons
Last edited by Battlewagon; Aug 21, 2007 at 11:16 PM.
Former G35driver Vendor
iTrader: (23)
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From: Los Angeles California
Originally Posted by Nismo G
haha again this topic is going to get beaten to death. Everyone on here hates the CAI for some reason...idk.
-Sean
-Sean
I really hate saying anything negative about the long tube CAI's because so many people have them. Then again, I feel obligated to give an honest answer if the question is asked. At least the difference is small when they are properly installed.
The real killer is when a HAI (hot air intake) is used. A simple short tube with the filter hanging in the engine compartment with no heat shield. They seriously lose power for the reasons Dave described above.
Joined: Feb 2006
Posts: 13,068
Likes: 101
From: Southern Cali --> 818
Originally Posted by spooze
ive searched and read. people say jwt pop charger with a ztube. and others say stillen with a z tube. which is better
A few will state that the stock airbox is superior to any heat shield, including Stillen. Can't really comment on that; the OEM heat-shield is definately high quaility, but I have not personally compared it to the Stillen's. In my opinion, if you're going aftermarket, it's Stillen hands down. Good heat shield (far superior to the JWT "heat shield"), sounds great, and probably flows a little better than stock with the Z-Tube.
Stick to the Stillen or OEM w/ drop in filter.
.
Last edited by Skaterbasist; Aug 22, 2007 at 05:00 AM.
Really Needs a Life
iTrader: (164)
i have an HKS intake system on my G and it works amazing, before i installed i put in a better filter than what originally came with it because the foam was horrible!!! but now its great, along with crawford plenum and spacer it's howls!
anywho, CAI = NO imo
anywho, CAI = NO imo
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