[QUOTE]Originally posted by maximadave

Quote:

Originally posted by Shaydz

I think as long as you are careful with the MAF and DO NOT turn your car on while it is disconnected

Another wrinkle is that the sad truth is that the 2K2's have had some issues on the MAF

If you leave the MAF sensor connected and assemble the intake inside the engine bay you wont run into any problems with the MAF sensor. I installed both my Frankencar and Injen without disconnecting the MAF. Check engine light has never been on.

just my .02c

Dave

AGREED !

 

I'm not directly involved in this thread but since I've posted several questions concerning the value of various intakes I'm going to take a shot at this statement. If I understand your statement correctly you are saying that because the unique conditions of cold air intakes are not available to dyno's that you can not then make fair comparisons. While I don't strictly disagree with you, I disagree that a comparison cannot be made. I think it is fair to say a comparison on a dyno where road conditions are simulated is reasonable. Now I realize that its impossible to simulate the road conditions (they can change by the minute), however a restricted form of corner's analysis can be done. These would be no air flow (similar to low air pressure or possibly rain restricting air flow) and forced air flow into the area around the intake (fan on the grill) would certainly give the worst and best conditions. An intake that performed badly in the first case would be less significant as the environment is less likely to occur. However, an intake that performed badly in the second case would likely be a bad performer.

My one concern is that dyno tests have a certain error rate (unknown to me but if I use my own 3 tests, the results varied by about 4 HP or 1.9% of the 208 max. reading I got). Given that the most I've seen mentioned here is ~10HP, it seems that the intake gains would be hard to establish beyond a few HP.

 

i understand...i understand that the most potential of a CAI is achieved once it's moving... however, even when not in motion, shouldn't a CAI show better gains than a HAI? the CAI is and should be receiving colder air because of its position away from the heat in the engine bay. isn't that the main purpose of a CAI... to get air from a colder source? this "car-in-motion" logic can also be applied to a HAI. once the car is moving, air would be circulating in the engine bay, thus producing cooler air and showing the real performance gains of a HAI. just my $0.02 (like most of you say)

 

I couldn't agree with you more on this!! My best guess is that either the MAF is a POS, or being roughly handled during the install.

Does anyone know if other car makes have such a high rate of MAF failures with or without intake mods? We've got several Honda Prelude owners on the org...what about you guys?

Tony

 

OT: How is that yellowtop battery working for you?

 

OT: Bet it adds 2 HP (Red only gives you 1HP)

 

I think your analysis is astute and surely presents a more effective method for comparing CAI vs. HAI. Of course, I don't if a lot of folks are interested in paying for four dyno runs to confirm differences.

 

That looks very sharp!

 

MichaelAE...I agree/understand your statements. Honestly, there is no way to tell what kind of 'real world' gains any particular mod gives you. Maybe if someone invented a 100% accurate portable dyno, onc that you can strap right on your car after every mod, then we can get some real results! By the way, that would have to be a huge *** fan.

 

For the injen intake you need to cut a hole in the 4th gens? Also, which is better injen or Place Racing or both pretty much do the same thing?

 

ROFLMAO

As the Injen has no ram air effect what is this 100mph BS. Any fan that supplies air from out side the engine compartment will do, unless air changes its temp. at 100mph. lol

 

Dude where did I say any thing about the fender? I know all about the PR CAI and as like most new car owners I'm not about to drill a 3" hole in my fender.

I'm talking about the "cheap" left side splash gaurd under the radiator which is where I believe your filter is near with the Injen unit. This will give you a ram air effect.

 

I'd be more than happy to compair my ave. results with someone that has similar miles and an Injen.

And all I'm getting at is I don't want to spend more money for a part just because looks better but has no proven benifits.

 

As far as vibration goes, am i right to presume such:

1) The Injen seems to be connected/braced to the engine itself (pic w/ arrow)
2) The engine moves forward/backward during a run
3) Wouldn't this constitute severe vibration?

 

Your questions raise some additional questions for me, soundmike. Assuming vibration is bad for the MAF sensor . . . and that point hasn't been completely proven yet . . . then which is worse, an intake connected/braced to the engine that moves when the engine moves or an inlet connected/braced to the frame that doesn't move when the engine moves? And on inlets connected/braced to the frame, precisely how much additional vibration is transmitted to the MAF sensor when a rigid mid-pipe is introduced. (On the OEM intake, the flexible, accordian-like tube between the throttle body and the MAF sensor appears to effectively isolate the MAF sensor from engine vibrations.)

 

Where exactly is the MAF sensor? Call me! Can some one post with a pic? thannks

 

It's the one encircled in yellow. That black tubing is the MAF assembly. The sensor is inside it.

 

 

My bad.

 

I'm with you on the second part...not wanting to spend money on useless modifications. However, comparing your dyno results with another driver's is unlikely to yield any accurate results since the base dyno's vary so much from car to car. Best test is really one person, one day, one car, four dyno tests (one hot-air and one cold-air on each intake). I still hold that this doesn't accurately show the value of a CAI, but it is probably our best bet.

 

At 100mph, the air circulating the engine bay and running up under the splash guard is undoubtably going to do a better job cooling the intake tubing and the CAI will be picking up colder air. At higher speeds, the ambient heat of the engine itself is, well, less ambient so less effect on surrounding air temp.

Just for kicks...I'm not claiming to be an expert on intake technology or aerodynamics and how temperature is affected, etc., etc.

 

Whats an air filter? Why can't we cut cut holes in our hood 'rice style' ? Have the MAF thingy dangling on top of the hood. Won't that get some nice cool air to breath?

 

I say we rent out an air tunnel for a day and then put this all to the test. Install cameras under the hood and then use smoke streams to see how the air runs around/through the engine bay.

Anyone know of a good testing facility???

 

Hell ya! How about the JPL?

 

LMAO

Well I know NASCAR is gonna take the top cars from each manufacturer after the race Sat. to Lockheed Martin here in Atlanta maybe they won't use all of their time and we could buy what's left.

Na that won't work either I'm sure someone will say some smoke got sucked in the intake of the CAI robbed the car of HP.

 

Why don't we just start our own dang racing series. We'll call it Maxcar, Maxima Pro series, MRL or something.

Oh yeah, and we're not doing that boring ole oval junk all the time. I want tha twisties!!

 

Ha Ha. Actually the point of the test would be to see how the air moves. there would be no point in running the motor. It is times like these when I wish I was rich. Although I prolly wouldn't give a damn about the max if I were rich, I just wish I had silly money to throw around on things like Wind Tunnel rental and such.

 

 

IM in just tell me when...