97Q45t question regarding air intake!

[FarFetched]

What did you do with temp sensor that is placed in the stock air snorkle. W/o it MIL will be on all the time. Where did you put it?Thanks.BTW I am working on getting my (repair/mods) wripeup together.

[97Q45t]

I removed the air filter box but left the air snorkle alone so the air temp sensor is left untouched. I'll take some pics of the engine bay and post them tomorrow.

[FarFetched]

There is no air flow, do you think it doesn't throw readings for ECM off a bit?I am ready to step up and get K&N cone filter installed.

[maxnix]

I am ready to step up and get K&N cone filter installed.

K&N cone is a big fall down.

Read the previous posts, please.

[FarFetched]

K&N cone is a big fall down.

Read the previous posts, please.

What about drilling 3" hole under where air box is and feed a pipe down there with cone filter attached. It will be in an open area inside behind LH side fender. I'v had K&N charger filter on my Jeep since it was 1 yr old, and after 100K miles engine performed just as good. Serviced every 10-15K miles. I can either use K&N or Air Raid filter or maybe paper/fiber type cone filter. Any ideas?

[maxnix]

I can either use K&N or Air Raid filter or maybe paper/fiber type cone filter. Any ideas?

Keep it stock and replace the OEM filter annually (as well as the cabin filters).

How much do you think Nissan spent to determine the frequencies of the three resonating chambers? How will you replicate them?

Q45tech says most induction resistance is in the head caused by valve shrouding at high rpm. Only thing K&N will give you is more dirt, a oil film contaminated MAF, and a louder intake sound that will fool you into thinking you haven't dropped any power, until you compare times in a controlled environment.

If you want the non-stock CAI. look at posts by TGvince. Notice the bips in the graph. Wonder if the resonace chambers were tuned to those rpm?

[FarFetched]

It is a controversial subject. Many GM (if not all) use MAF just like Q45 and I have yet to see any dirt accumulations on MAF grid or wire itself after using K&N cone or OEM type filter. One thing you have to remember to oil it properly, not to over-oil it. I am sure you can perform many different tests to see what is the best. It is only numbers after all. Just like dyno tests are not real life numbers. Friend of mine uses K&N air intake on his F250 7.3L powerstroke which has well over 200K miles. He converted it after his OEM paper filter got sucked in after he upgraded his turbine and exhaust system (banks sidewinder). Have you seen what damage does an air filter when it gets sucked in on a diesel? CARNAGE is the wordI absolutely respect the knowlege Q45tech has. I want to see real damage(if any) from using K&N and other types of free flow filtering systems! The image bolow shows exactly what I have in mind !Also, here is the link to custom Air intake zer...age=4Also, here is the statement from K&N http://www.knfilters.com/massair.htm


Modified by FarFetched at 3:37 PM 7/10/2005

[maxnix]

1.) It is a controversial subject. 2.) Many GM (if not all) use MAF just like Q45 and I have yet to see any dirt accumulations on MAF grid or wire itself after using K&N cone or OEM type filter. 3.) One thing you have to remember to oil it properly, not to over-oil it.

1.) Not according to Q45tech. He has done the research.

2.) Q45tech and others have documented it. Most MAF failure reports involve K&N filter users.

3.) Where do you think the oil goes? Why do you think OEM filters are dry? Ever compare the amount of media in each?

Even the smartest person will learn by reading the posts.

[Q45tech]

Few people take the time to stretch out an oem filter [ iron it flat] to see how much MORE AREA it has than any K&N cone filter. Aftermaket chain store filters are often quite smaller in area with cheaper paper.

Don't be fooled by just looking at the rectangle count the pleats, and measure the depth and paper thickness.

Air flow per square inch is the name of the game.

Strange one would even dare to compare a 7.3 liter turbodiesel to a small 4.5 liter V8...........the turbo diesel needs 1.5 times the air flow at 3,000 rpm that the 4.5 needs at 6,000..

It [imagination] gets worse on modern non resonated air filter boxes [where you can even see the whole filter thru the front open ducts] . Even less restriction than on the Q...........still people replace everything with a cone?

[FarFetched]

I don't even dare to compare torque-monster 7.3L stroker with 4.1 Q45 motor. All I said that OEM paprep filter failed after Sidewinder had been installed. It was not K&N (the green filter - can't remember the name) held up to some serious "sucking" and still goes pretty strong! Shear luck, proper set-up - I don't know. All I know K&N has never faild on me when I had Jeep. Q45 is a diferent breed I am still learning about.P.S one thing thoug after driving 4.5K miles I opened Air box and inspected filter. I got so much stuff out of it you wouldn't believe. Air filter was getting packed with road garbage and such. All I want to do is hide air filter from all this. Just like Zinkie13 had done. What about papre cone filter (not oiled type)?Thanks I respect you opinion an value your knowlege!

[97Q45t]

Finally I had a chance to take some pics of the engine. Here's how my air filter looks like, pardon the dirtiness.

[FarFetched]

I am getting all the pieces this and next week. I am doing CAI that will be hidden behind frnt fender just below the stock air box. When I get all done I'll take pics. Cheers!

[maxnix]

Hmmm........speaking Klingon again, I see.

[FarFetched]

I know it sounds absurd to many of OEM-like keepers, but I have an idea on how to keep it all clean w/o letting very-very fine particles into intake system w/o restricting air flow at all. Stand by to find out the details!

[maxnix]

Not to belabor the obvious, but Nissan already did this!

I just changed out an filter today on my wife's FY33 that I swear is less than 90 days old. It was full of stuff in the pleats, greasy, probably working at 50% efficiency. The air box was pristine on the other side.

I can't imagine people want to compromise such a well designed system.

Amazing how dumb those Nissan engineers are, isn't it?

[FarFetched]

Not to offend Nissan engineers I just want to see if my idea (I didn't create it) works. I can always go back to stock set-up at any moment. Do you know how much does a snorkle help to eliminate dirt accumulation in a stck (if retained) air box? I can tell you from experience - a ton, plus you get cooler air from above. With CAI you won't get raised air intake however you eliminate majority of the system from absorbing the heat from engine (even with stock air box it gets so hot whjen sitting in traffic). Filter that's hidden below stock air box (below metal plate) will give a sourse of cooler air even on a hottest day . I am not goint to make a mistake I made when I got CAI for my Jeep and threw stock air box away . When I had snorkle installed, I had to get stock air box (wasted money I could've saved).Don't get me wrong, I know stock air box does very good job on filtering air. I just want to try some thing that I have faith for!Cheers!