boys and girls,

I decided to play with the O2 sensor on AEM today. what prompted me to do so was my highway 6th gear acceleration. ever since the AEM CAI with sensor relo., i felt great power above 3.5K RPM. below that it kinda dogged (still sounded very nice under WOT don't get me wrong). i drive mostly highway to work everyday. stayed on 6th most of the time as you can imagine. high speed accel. was just not that great. i can hear the CAI growl under WOT but it didn't seem to gain speed as quick as before (maybe 80-110). in fact it kinda sucked with every gear on low RPM except the 1st (well you rev it up first to launch anyway). so i moved the sensor back to the stock position and sure enough everything under 3.5K RPM felt much better now. drag race is great with the relo. cuz you stay above 3-4K RPM most of the time. but stock position is much easier for everyday driving IMO. any other 6MTs want to chime in on this with your experiences?

 

might be in your head.. .. my way around the issue was to order the supercharger

 

That's an interesting idea....

I'm a 5AT, so I don't know if my experience will really mean much to you guys, but I'll reposition my 02 sensor back to stock and compare/contrast the effect.

After installing the AEM, and placing the 02 sensor in the "added hp" position, I felt added low-end torque as well as a nice little top end boost.

What does the position of the 02 sensor do for the car anyway?

 

it's not an 02 sensor.. it just detects the temperature of the air and adjusts accordingly. the idea of moving it to the intake tube is it's probably a bit cooler there.. honestly.. shouldn't really make a difference..

 

i don't think so. i roughly timed the 6th gear accel. there is a difference before and after. if someone can time their 80-110 in 6th to compare that'd be great.

 

6th gear isn't meant to be a gear for acceleration.. that's what you have 4th for

 

dude we are discussing the differences before and after. not which gear to use. reason to pick 6th it's bcuz it stays at lower RPM to prove a point. Thank you.

 

I refuse to believe that the relocation gave such a noticeable difference in performance.

 

too bad i don't have a 5th wheel to test that. i am thinking a fixed length rolling accel in 5th or 6th gear w/ WOT to time it. i'll post my stop watch results when i get a chance.

 

I have a 6MT and I relocated the sensor but moved it back to the stock location and found EXACTLY what you said and I left it in the stock location

 

good. now we are talking. more please if any.

 

sorry i forgot the 5AT can test too by using sport shift. select a higher gear that put ur RPM at a lower range below 3500 to accel. fix length and time it before and after to see the diff. if any.

 

Just reloacted my sensor to stock position:

I noticed one thing right off the bat when i removed the sensor -- it was black w/ soot ... and I recall that when i installed the AEM and removed the sensor from stock position, it was very clean -- is anyone else's dirty like this? Is my dryflow filter not filtering enough?

Performance: Can't really say I felt a difference in first gear .. felt quick throughout the entire tach. In 4th and 5th gear... I didn't feel any difference either .. must be a 6MT thing w/ your guys' shorter ratios

 

It's not a matter of providing times. Even those can be flawed.

Think about it; there's not much of a difference between the two locations to make such a big difference in temperature.... which brings me to the second point. You called it an O2 sensor, which shows a lack of knowledge. That sensor you're talking about is an intake air temperature sensor, not an O2 sensor. That's why I think that it's probably more mental than anything.

Having said that, when I installed the intake on my brother's '05 6-speed, I relocated it to the intake pipe location per the recommendation. I haven't done any testing like you have, but I just don't think that it would make such a difference like you said. But I would be glad to be proven wrong; not being sarcastic or anything. Call me a skeptic, I guess.

 

all due respect, o2 or temp sensor on 3rd g, like you said, you don't have one. it doesn't matter that much. not the point of discussion here. u r knowledge king you can have that.

i just tested today fixed length as careful as i humanly can, there is a couple of seconds diff. over roughly 1/8 (est. i could be wrong here but it's a fixed length) mile length in 6th gear. you can discuss theory all you want. go test your bro's to see if you can get the same result. i am sure we can benefit from your test result inputs.

 

mine was the opposite. stock was black and AEM pipe location was clean. oh i have dryflow too.

 

I did some more tests tonight. fixed length but in 4th gear this time. rolling cruise @ 20mph then at the marker WOT to the end (@ roughly 60mph) 4 times each (stock vs pipe location). results were consistantly stock position over pipe location by a average 1.5 sec. i understand these are not laser 5th wheel results but 1.5 sec is significant even with a little errors.

we already have one 6mt verbal backup (his feeling). i just hope if some of you 6mt have time, maybe you can do similar tests to confirm/rebut my findings. Thanks.

 

Im not even going to mess with it. But I appreciate your efforts...

 

Thanks for this post. I moved my sensor back into the body, stock location, and the car drives so much smoother. The trans even shifts better. Definatly more peppy. At first I thought it was just in my head, but after driving an hour I realized its not. I have a g-timer I will give results, difference from stock location and pipe location. 60' 0-60 and quarter. My best quarter is 14.30, best 60' is 2.20 best 0-60 is 5.60. This is 5AT AEM intake, comptech exhaust, ur pulley. I will post my new times with the new location in a day or two. Thanks again for this post I am open minded and I like to try new things, (trial and error)

 

Please post some numbers here before and after from changing the sensor of the AEM CAI. By the way, not bad numbers for an auto!!! 5.6secs can compete with the IS350.

 

last night I had it to a 5.75 with my girl in the car. The added weight of 125 didnt help at all, but in order for me to get the quarter speeds I have to take it to 100mph. Today I will be going on the parkway, so I will take the measurement there. 0-60 5.6 secs is not bad, but the 60' foot is what hurts me 2.20. I raced a worked wrx a few nights. He won because of the jump he had off the line. AWD is awesome. I was catching up to him but the jump he had was too big. His 60' was 1.82 quarter 14.1 at 93.3. Not a good trap but good 60'. I wish I could get my TL down to 1's in the 60 ' and then we will be talking about better times.... But with a front wheel drive car I dont think there is a chance.

 

I was hoping someone with G-timer or things like that would help. I know i wasn't crazy b/c my stop watch results repeatedly. i did notice that at higer RPM the pipe location seemed a bit meaner but i have no data to back that up. all my tests were done doing below 3.5K RPM (low end) rolling accel. I don't know if G-timer can verify that (like fixed gear rolling accel.. like i said. i think pipe location is better if you keep RPM above 3.5K all the time like in drag race (less low end torque. that might hurt your launch if it wasn't properly done so). for daily driving the stock location is much peppier. i can't wait for your results. Thanks.

how much is that G-timer anyway? maybe i'll get one myself. Thanks.

 

http://cgi.ebay.com/ebaymotors/PASSP...spagenameZWDVW

i think they go for 180-200 brand new but if u look ebay you can find a few good deals new on them...make sure to get the G-Timer 2 not the G-Timer 1 the G-Timer 1 is kinda gross looking lol

now...back to the topic

 

So what exactly is being said here- are more people keeping the sensor in the stock location?

 

i think its very 50/50 and depends on ur driving habits (from what im reading) im reading that in everyday driving the ride has more low end torque, but when it comes to dragging, it helps more in the higher end torque giving the acclaimed extra HP performance

 

I've had the sensor in the stock position now for a week, and I cannot tell any difference. I have the 5AT for the record. I'm gunna switch back to the extra hp position only b/c then i'll psychologically feel like i've gotten my money's worth.

 

ha ha....lol

 

thank you guys for your comments,im just registered to this site,and i like it, a lot of good info,i guess i conclude that the sensor position really dont make a big difference, sence we already in the topic of cai , i just order a injen cai for my 04 tl 5at, "which i'll later post some pics", and i dont know if i made a good decision, it seems like everybody here has aem cai, i got injen bcause they told me "better quality",what about preformence? which one sounds louder or better?

 

I wanted to run my car on the expressway last night but it is raining all night and this morning. Hopefully it will stop raining later so I can give you guys some numbers from my g-timer. I have plenty of numbers from the extra horse power location in the cai. But I also along with everyone else on this site wants to know the difference in #s between stock location and the pipe location. The only number I can give now is with my girlfriend in the car 0-60's. 0-60 with her in the car at the pipelocation is 6.10, 6.15, 5.95. 0-60 with her too but sensor in the stock position 6.00, 5.75. both my times were better. Now I want to do the quarter too get some real #s up here. I have to wait till it stops raining though. NJ is flooding now. One thing I learned with the g-timer is when launching a 05 tl 5auto dont brake launch it. I did it with trial and error and noticed that it takes almost a second for the brakes to unlock.... The best way I found to launch my car is
1. left foot on the brake lightly
2. right foot almost on the gas but dont give any gas.
3. when it is time to go let go of the brake and give it gas at the same time.
4. dont stomp on it, if you have cai, exhaust and pulley like I do you will not get traction. Just press the gas slowly enough that you dont spin but fast enough to get there. PRACTICE

 

just registered to this site,and i like it, a lot of good info,just order teins s tech for my 04 tl 5at,which i will later post some pics, but i dont know if i need a camber kit since hondas and acuras are known to camber, the teins will drop my car about a 1' 1/2 , so i dont want to buy tires every six moths, also how long my stock shocks will last? i also ordered a injen cai,it seems like everybody here has aem cai,so i dont know if i made a good decision,i'm looking for preformance and also a good deep sound when you punch it!

 

eh....a lil off topic but here is a link to AEM dyno chart. quite a bit increase if true. or we can sue..lol
http://www.aempower.com/pdf/dyno/21-...Acura%20TL.pdf

 

come on man. just screw on and screw off. u gotta try this. hugh difference esp. u have 6mt. don't need to down shift to pass traffic nearly as much. I am happy drving everyday again now.

 

clearly, the answer is to purchase a second air temp sensor and install it in addition to the stock one. Then you'll have the best of both worlds. Clearly.

 

^ Clearly.

 

lol ha.................................

 

Sorry to say but according to my g-timer I am getting better numbers when the sensor is in the modified possition. I was wrong. I tried it over and over and the best time I got with it im stock possition is 5.75 0-60. The average was 6.00 t0 6.10. My best 0-60 in the pipe location is 5.62. And my average is 5.72-5.80. It definately feels better in the stock location for everyday driving, but for the power the pipe location is better. I thought for sure that the stock location was better, until I tested it over and over the other day.

 

oh i have no doubt. think about it, when doing 0-60, what RPM range do you use? the answer is high end. like i mentioned earlier, i felt the pipe location gives a much meaner punch at higher end. but for day to day driving, stock location will give you better throttle response at the lower RPM. in my case, it's 70-100mph with my 6th gear. that means everytime i want to pass some traffic on the highway, i just step on the gas and go. with pipe location, i had to down shift to 5th to bring the RPM up to pass. that's why the topic is "low end torque". i don't know if G-timer can record rolling accel. with high gear. please share if it does. Thank you very much for the data.

 

Wow, 1.5 sec is a lot of time.

Maybe give the ecu time to learn the new position?

I know we're talking about 1-2hp here, but hey, I paid for this CAI and I want all the HP I can get

 

I refuse to believe that sensor relocation can account for a .3 second difference in 0-60 acceleration. Hell, adding an intake is only good for maybe .1 to .15 seconds off your entire quarter mile time in and of itself, so there's no way sensor placement can account for a .3 second improvement to 60. G-timers are not really all that accurate.

 

In the intake tube, the IAT sensor won't suffer from heatsoak and it will read a little cooler (to the computer), causing it to advance timing. I have a feeling those that are seeing a loss in low end with the sensor in the tube are having detonation issues due to the advanced timing. Throw in some good gas and switch the sensor back and forth and I bet it will always be faster in the tube instead of the intake manifold.