intake

ONLY for ADVANCED technical discussion about the 240sx!
wanghoeby
Posts: 75
Joined: Mon Sep 01, 2003 4:09 pm
Car: climbing paintball

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What are peoples oppinions on intakes?What is the difference between the cheap and the expensive intakes?The ones for 30 dollars seem to be exactly like the 70 dollar ones, wtf?How much HP can I expect from a simple intake that goes from the intake manifold to the actual intake?How much money is a reasonable amount to pay for one of these?

Thankshow much money should I spend


stillmatic
Posts: 438
Joined: Sun Aug 10, 2003 12:33 pm

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I thought you were talking about the intake manifold. You should refer to them as cold air intake or CAI.

Anyway, keep the stock air extension and spend $10 on a maf adapter and cone air filter. That's all you need to make your car breathe better. Don't expect any horsepower gain if you have an N/A. If you're lucky, you might gain 1HP.

If you want cheap power, get an ASP underdrive pulley. They go for $99.95 at rpmoutlet.com and you'll gain more power than a intake/headers/exhaust setup. If you combine all 4, then you might have yourself a quicker car. People normally skip on the headers though, because you're better off saving your money for forced induction.

Another thing you should look into is a ground wire kit. I heard they make your car rev quicker (just like the CAI) and idle smoother.

wanghoeby
Posts: 75
Joined: Mon Sep 01, 2003 4:09 pm
Car: climbing paintball

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How do I tell if my car is N/A?Does it matter what brand the filter is? Is there a difference between them, or the place that I buy from?Any suggestions?

Thanks

User avatar
912.0turbo
Posts: 756
Joined: Sat Jun 21, 2003 8:07 am

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N/A= Naturally Aspirated (non-turbo,all motor)No.No.any filter would do.

Nismo_Freak
Posts: 10314
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 Nissan 240SX

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K&N Filters are good and you can clean them.

You don't want to get a bad filter because it will allow alot of dirt into the combustion chamber. Once it's there it works like sand to eat away cylinder walls and it gets in the oil. From the oil it gets in between the bearings and causes excessive wear.

You can prevent this by frequent oil changes but why go through the bother. Just get a proper filter to begin with.

Nismo_Freak
Posts: 10314
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 Nissan 240SX

Post

stillmatic wrote:I thought you were talking about the intake manifold. You should refer to them as cold air intake or CAI.

Anyway, keep the stock air extension and spend $10 on a maf adapter and cone air filter. That's all you need to make your car breathe better. Don't expect any horsepower gain if you have an N/A. If you're lucky, you might gain 1HP.

If you want cheap power, get an ASP underdrive pulley. They go for $99.95 at rpmoutlet.com and you'll gain more power than a intake/headers/exhaust setup. If you combine all 4, then you might have yourself a quicker car. People normally skip on the headers though, because you're better off saving your money for forced induction.

Another thing you should look into is a ground wire kit. I heard they make your car rev quicker (just like the CAI) and idle smoother.


Everything you just said is unsupported.

One of the largest gains on the N/a KA is found with an intake or a header upgrade. While peak gains may be small in relation to other mods you will gain alot of area under the curve. The ASP pulley alone is worth maybe 1-2 rwhp in the midrange and maybe 3 rwhp at the top end. The hotshot header nets about 8 rwhp peak gain but with the overall powerband being bumped up from 3500 - 6500 rpm.

Ground wire kits only work on vehicles with poor grounding to begin with, specifically RX7s and other "electronically challenged" vehicles. Alot of the gains associated in the dyno tests could be due to a change in climate or engine operation temps, it's hard to substantuate the claims with hard evidance. Granted you can build the kits for about 35 bucks using 10 or 12 gauge amp wire.


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