Injen CAI

[IlAClI]

Hey Guys,I've tried some extensive searching on the topic of injen cold air intakes available for the 2006 m45 and found Tony's drag test results after adding a CAI made by Injen. He experienced no performance or economical gain from them.

I was talking to someone from the parts department and told me that a gain of 4-6 whp is normal in modifications like a CAI and (When not pushing on the throttle) a mpg increase of 2-3mpg (Which seems a bit high). Before I purchase this mod for my M45, I was wondering if anyone else had any comments on the injen CAI. I'm most concerned with fuel economy increases and performance declines after the mod, if either exist.

Thanks a ton for your help,Adrian
Modified by IlAClI at 7:50 PM 6/2/2008

[maxnix]

It's the modern snake oil. Do you think you could even notice a 6 HP gain, let alone a 12 or 18 HP gain? Most can't notice less than 10%.

Best CAI is stock with a OEM filter. Change annually with your interior and seat filters.

[IlAClI]

Which is exactly why I'm really not concerned with gains in performance.

I really want to know whether or not this will give me even 2 miles more per gallon. It might help stop the nags about fuel costs from my wife. She isn't very sensible when it comes to fuel consumption. Don't even get me started about that.

I've heard the sound from the CAI is more befitting of a V8 engine, too.

[szh]

In real-world driving, I'd be very surprised if you see any significant difference in gas mileage whatsoever with these kinds of mods.

Most people who try changes like this, tend to also then unconsciously "help" by watching how they drive ... no burnouts, WOTS, etc. Then, the resulting "improvement in gas mileage" are attributed to the changes they made in the car.

Better to just keep everything running in optimal condition.

Z

[nmgoodthing]

I've heard the sound from the CAI is more befitting of a V8 engine, too.

This doesn't even make sense. How can sound be more benefiting besides to your ears?

[Double E]

It's likely to be crap.

You're better served by keeping RPMs under 2500 when leaving from stops.

Also strictly keep from letting the engine get over 3K RPM, use premuim fuel, keep your filters clean and use the right air pressure. Get an alignment if you haven't done so in awhile.

Also watch and keep the instant mileage screen on the display to find where your green leaf stays the most green all the time.

I've gone through 3 tanks of fuel with an average of 23.5. I reset it yesterday after those 3 tanks when I filled up and am back down to 20.3 ...so I have my work cut out for me to get it back again.

The drive to work this morning was "spirited".

[IlAClI]

This doesn't even make sense. How can sound be more benefiting besides to your ears?

Umm... what?

Double E, are you getting these numbers with an M45 in the city? If so, that's quite amazing. I obviously did not buy this car for the fuel economy but a few extra miles to the tank wouldn't hurt either. I'll try out these tips and see the mpg that I can get.. just for fun.

[hylbruce]

i have install Injen cold air intake for my 2007 m35... but tell you the truth there isn't any horse power improve but let me tell the best thing is... the SOUND!. after i put on my intake the best thing is the sound... haha the engine sounds like a sports car... only when it's in high rpm... no sound at all when lower rpm around 2-4k rev... so i like it... =]

[Double E]

I know! I'm surprised that y'all are getting such bad numbers.

I'm readily willing to admint that my commute is not so much city driving as many ...but I didn't think it was 5-7MPG different. I really think the commute and driving behavior have a lot to do with it.

This thread gives more details on the topic and in a response to the OP, I describe what I've been doing since I bought it a couple of months ago.

zerothread/331882

The only thing I've added to driving habits recently is to shut off the engine when I know I'll be sitting at a light for 60 seconds or more. I just put it in neurtral kill the engine & crank it when the light before mine goes green to yellow.

I'm familiar enough with the light cycles where I am that if I come to an intersection that just completed a cycle and I'm first ...to about 5th in line, I can expect to wait long enough to benefit from the car being off during that time.

I don't really expect that it's making a huge difference though.

When it gets hotter in NC later this summer, I'll not be able to continue that so easily.

I'm doubtful that I'll ever get to the "advertised" 24mpg HWY , but I'm close enough to be pleased.

[szh]

Hmmm, I should add that at a steady 65mph on the highway, on level ground, it is easy to get and sustain more than 24 to 25 mpg for long distances. I have tested this out ... old post on the subject somewhere.

Z

[Manok]

I'm on the road alot for my work and I constantly get 24+ MPG on the highway. I just keep a good distance from others on the road and maintain a constant speed..usually 65-70. I don't do much city traveling.

[Double E]

Manok,

Your average reading is 24+ ...or are you indicating that the instant is reading 24?

[mcrews]

In reply to Manok w/ an 04 M45.I have an 02 Q45 w/ sport package so the 2 cars are very close in engine, weight and tires. (as opposed to the current M)I consistantly AVERAGE 24+ on trips and highway driving. so yes, it is possible.couple of footnotes:I run 255/45/18 on factory rims instead of 245. the tire is 3.4% larger so on the highway I am using the same energy to roll a little farther. The larger size is a detriment to city driving but the majority of my driving is on the road so it works for me.second, at 50 (my age!!!) I do a lot less 'spirited' driving on the freeway. I tend to settle in just above the legal limit. for 70 I'll run at 74-76 on cruise.third, I tend to watch the road ahead and time my passing of slow cars.fourth, but the really nice feature to these 'beasts' (4.5L/340hp) is that everyonce and a while I downshift and floor it to get past a cluster of stupid drivers!!!!!!
Modified by mcrews at 10:50 AM 1/4/2009

[M4T5]

fourth, but the really nice feature to these 'beasts' (4.5L/340hp)

Modified by mcrews at 10:50 AM 1/4/2009[/QUOTE]What did you do to your M45 to get 340HP?? They are rated at 325hp, at least that's what the sticker says on my 07' M45.They originally had 335hp, which was lowered for some reason to 325hp. That means to all who have told me there isn't much left in them is wrong!The ECU was programmed to be less agressive. That would mean when they originally has 335hp, there was still a safety cushion of power left over in the tuning.

J

[M4T5]

Why do you guys dog most of the sponsors products here anyways??? If their products are worthless, then why are they allowed to advertise them here?

J

[mcrews]

nobody is dogging 'the sponsors'.we are stating actual results for the specific cars on this section of the NICO website.

just for edification. in the world of web advertizing, if I am a aftermarket auto manufacturer, I buy 'pop-up' ads for ALL the forums that I have a part for. The when someone starts a thread for "filter or K&N or Cold Air" keywords, my add pops up. So it's not like they are uniquely a sponsor of NICO or the M forum.

How many aftyermarket site have you been to that have Infiniti aftermarket products but don't have anything for the M45.I know I run in to this all the time, even if i am specific about saying Q45.

you quoted me, then said:"fourth, but the really nice feature to these 'beasts' (4.5L/340hp) Modified by mcrews at 10:50 AM 1/4/2009[/QUOTE]What did you do to your M45 to get 340HP??

If you would pull your head outa your AXX for longer than 5 seconds,you would have read THE FIRST LINE IN THE POST!!!!!! where I introduced this sentence:

I have an 02 Q45 w/ sport package so the 2 cars are very close in engine, weight and tires

SO I DO NOT HAVE AN M45!!!!!!

[Z33PWR]

i Just posted on another thread something similar. with bolt ons on our cars any gains are very minimal for the fact that our ECU's are very restrictive and are always recalibrating. without a ECU reflash most of the Bolt ons are not going to make a big difference but will change the sound of the vehicle. you wont feel the 2-3 hp gain but you will get to hear that lovely engine scream at top end. If you like the sound of the CAI pick it up but dont throw away your stock set up for when you decide fully if u want to keep it. make sure you pick up a bypass with it so you dont suck up water on rainy days and large water puddles. its not a good feeling dying in the middle of the street like i did in My 350z it will make your heart stop lol.

[mcrews]

This doesn't even make sense. How can sound be more benefiting besides to your ears?

what doesnt make sense is YOU changed the word

he said:I've heard the sound from the CAI is more befitting of a V8 engine, too

befitting as in 'fit for a king" or better suited for the big guy.

you said benefitting.....

[mcrews]

i Just posted on another thread something similar. with bolt ons on our cars any gains are very minimal for the fact that our ECU's are very restrictive and are always recalibrating. without a ECU reflash most of the Bolt ons are not going to make a big difference but will change the sound of the vehicle. you wont feel the 2-3 hp gain but you will get to hear that lovely engine scream at top end. If you like the sound of the CAI pick it up but dont throw away your stock set up for when you decide fully if u want to keep it. make sure you pick up a bypass with it so you dont suck up water on rainy days and large water puddles. its not a good feeling dying in the middle of the street like i did in My 350z it will make your heart stop lol.

this should be a sticky.great factual postthanks!!!!

[notacarlo]

That means to all who have told me there isn't much left in them is wrong

J

OK OK. 03' M = 340 hp - nuthin' left there. The detuned newer cars, maybe. We're not wrong, there just isn't enough info out in the world for any of us to make a correct statement.

[M4T5]

If you remove about 70% of TQ management, you would see a dramatic increase in performance without adding more HP or TQ to the M45 in tuning.Though there is always the side effects from doing this....It places more strain on the transmission and final drive train componenets. The next question that should be asked is, how strong is the 5-speed auto transmission, driveshaft, rear diff internals, and C.V. Axles?If Nissan or Infiniti lists the info data somewhere about the hp/tq rating info on these items, then the answer would be easy to acquire. Then we would know how much TQ management could be taken out of the ECU programming.

J

[notacarlo]

I was thinking about the rear end too. Might slap drag radials on it and see if I can brake something.

[M4T5]

I was thinking about the rear end too. Might slap drag radials on it and see if I can brake something.

Ouch, I could see aggressive traction snapping something due to having so much more moving parts in the rear than a traditional solid rear axled car.Not saying I want to drag race it either. I would just want more precise shifts. The subtraction of some of the TQ management would decrease the time it takes to shift between gears and keep the engine at close to maximum power at the shift points. As some of you may or may not know, TQ (torque) management makes the car drive more softly, or elegantly, and smoothly in a sense. Torque management does just what it says. It manages the engines torque output.TQ man. decreases (retards) the engine timing slightly at initial hard take offs and between the shift points. The lag time between transmission shifts is also effected by how much TQ man. is programmed in at specific speeds or engine rpms.Basically, the less TQ management in the ECU program, the more sports or race car effects will occur. It could turn your M into a neck snapping machine. Of course who would want that all of the time... Though, that's why I would want a laptop tune so I could always bring the TQ management back to OE settings on my own. I know it is far fetched right now, but it could happen in due time.

J