Thread: Best Performing and looking cold air intake?

Originally Posted by David99GTP

Isnt there a boatload of research data linked on zzp's site where they sell the wizaired?

Anyway going back to an earlier mention of making the hood functional. Does everyone agree its not worth it? I have the wizaired kit on my car and have recently installed the WS6 hood. I thought it didnt make sense to have it functional because the airflow doesnt seem smooth from the scoops to the box. Therefore I have stayed with the wizaired. Did I make the right call?

the guys who designed the origianal GTO agreed that it was useless to have a ram air hood as there is a low pressure point at the front of the hood

Well, and here's another thing to consider. We need better IAT sensors. Not only for accuracy, but do you guys know what the normal refresh rate is? It's anywhere from 7-10 seconds. Voilant (sp?) sells an IAT sensor for the GTO's, and it's extremely expensive, but it's got an almost instant refresh rate, meaning that it's pretty much real time. Think about it. IF you're sitting in the staging lanes and everybody here is going to have heat soak issues. Once you step on that throttle, you're not getting 120* air into the engine, it's considerablly cooler.....Now if it takes 10 seconds to read the correct air, you're almost done, and you could possibly have made up .3 seconds in your quarter time if you could read better. At this point I honestly don't think it matters what type of filter you have if things aren't reading right.

Am I making sense? Maybe not.

huh....is there any way of testing this to make sure(not saying your wrong) ok lets say with the car on or running and looking at the scanner wait and let it sit until it reaches ambient temps (iat sensor out) and stick it in a glass of ice water (32*f) and see how long it takes for it to change and that could also tell you if it is accurate....would this be a good test???

huh....is there any way of testing this to make sure(not saying your wrong) ok lets say with the car on or running and looking at the scanner wait and let it sit until it reaches ambient temps (iat sensor out) and stick it in a glass of ice water (32*f) and see how long it takes for it to change and that could also tell you if it is accurate....would this be a good test???

....ok true about the refresh rate but what about something that has an accurate temp so we could check the accuracy of the iat also(that why i had mentioned the ice water because it will be 32*) any ideas??

I'm not sure about the whole water thing, but a can of compressed air turned upside down may be a good test. I may even do this tonight if I think about it.

Holy double post Batman!

Well, comparitively, I would only assume that if you had a digital climate control (which I do) then you could first compare the IAT temp with the climate head unit temp. They both run off of separate sensors, so you should know right off if they are close or not.

good point...when looking at the iat with the different intakes i never went under ambient temps according to my digital climate control vs. my iat gauge...so i guess it is not under accurate if you know what i mean lol (not reading under the temps that it actually is outside)

I got ya. In fact, after typing that I know that the two are in sync with each other, because I constantly monitor my IAT's compared to the Climate control.

yep yep same here.....you know what i am going to go try that test with the ice water right now TO SEE HOW FAST THE REFRESH RATE IS and i will let everyone know how it turns out....the sensor is sealed so i dont imagine it will hurt it...the test will be with the car not running.... STANDBY!!!!!!!!!!

OK SO.....

The conditions:

69*F ambient temps (according to the digital cc)
IAT sensor removed from the intake tubing
IAT temps were at a steady 85*F for at least 10 sec before test was done
Test was done with a glass of ice water (32*F)

THE TEST:

With car turned off and key in the run position and the hpt scanner right in front of me and the IAT readings being a steady 85* for at least 10 seconds i submerged half of the sensor in whe cup of ice water ( not up to the actual connector even though it is sealed tight ) and the IAT temps on the gauge instantly started going down in at least 8 deg decreasements and took aprox. 16 seconds to reach 35* and stayed there contiunesly even at 35 seconds.At that time i stopped counting.Test was over.


OK well this is a 50 degree difference in temps. A 50 degree drop in temps is easily seen if you have an under hood open cone and have been stopped for any short period of time and then start driving again.This is not to say that the air that the IAT sensor is reading is not the temp that is being shown but rather a delayed measurement instead.



I dont think that there is a way to tell if the IAT sensor reacts quicker/slower to a majior temp change compared to a minor temp change.I would think that it's reaction time would be the same.


So yes the IAT sensor is delayed in reading the actual temps that are present.

Now a question: Could this delay purposely be made like this because the pcm would not be quick enogh to make instant changes like that? ex. to compensate for timng ect due to the cooler air temps.....

Just a thought

Originally Posted by Going Too Phast

I just wanted to point out that I doubt the glass of ice water was 32*. If it was it would be solid ice right? So 35* is probably pretty close. Although that isn't really being debated.

no the ice water in the glass is actually 32*F...i know it is kind of confusing but this method is used weekly to calibrate food thermmometers for fast food resturants as well as walmarts deli ect and they are calibrated to 32 deg using this method


stick a hvac temp gauge (the little pen thermmometers with the gauge face about the size of a quarter) in the glass and it will say 32*f

Hmmm.....good info. Stay tuned, things may get interesting.

I'm going to test mine at home tonight.

Good I want to see any differences you may have also...