New intake/heat shield setup

So after reading about how the IAT sensor can retard timing based on intake temps I decided to get a heat shield to cover my Amsoil nanofiber conical. It's an Injen power flow heat shield and it fits great! Here are some pics. Does anyone think this setup can possibly hurt airflow?

Looks good.

Is the far end open? If so, I don't think airflow would be impeded.

The only way to know is to test it at the track. Looks like it is not that much trouble to take it on and off between runs.

driller said:

Looks good.

Is the far end open? If so, I don't think airflow would be impeded.

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I would agree here.

I don't want to come off sounding like some jerk or something but I've tried several different methods with my Mark including the K & N FIPK and several enclosed setups like the one you just installed. All of them fail to be actual Cold Air Induction. I recorded as high as 178 degrees in my Mark with the setup close to that and with the FIPK. Once the car got up to highway speeds the temps came down but they were still over 140. It was a typical 90 degree FL day. The only real way to get cold air into our vehicles is to fully inclose the filter with something other than metal and to have it pull air from outside the of the engine compartment.

I got into this again a week or so at the CV site, I'm SnakedMark8 over there, check out my posts in this thread. http://www.crownvic.net/ubbthreads/...=+SnakedMark8&topic=0&Search=true#Post1315547

I also just data logged the Town Car with an FIPK and then a factory type enclosed air box this past weekend to prove it to the ones that won't listen. I don't know how to post data logs but if you want the info PM me or email me at lonnie@blueovalchips.com your email address and I'll send it to you.

I just haven't had the time to develope a decent CAI for the Mark yet but I do plan on it.

FWIW, when I did my CAI, I took the outside temp sensor and relocated it to the fenderwell right beside the air filter. I have tested the accuracy of the sensor and surmise it is within 5 degrees of actual temperature. I generally log the temperature reading each run down the track.

It generally shows 10 to 30 degrees above ambient air at the track. The hotter the ambient air, the larger the difference. I have seen it within 5 degrees of ambient temps on cooler days and as high as 40 degrees above ambient temps on the hottest days - depending upon how much cool-down time between runs I get.

It would be interesting to see how that compared to actual IAT readings.

If you put the conical inside the opening that is a huge bend before the mass air meter which the mass air doesn't like.

There's a difference between just driving around town or normal cruising where you are in stop and go traffic that promotes heat soaking. At the track you don't have that problem since you keep the engine temps down with open hood, turning it off, overiding the fan and so on.

As for a bend before the MAF, that can be tuned out as long as its not a drastic bend. I use to run a real cold air set up but it was metal and would conduct heat. But it was still much better than anything I've tried lately. Wish I didn't give it away.

Lonnie if you make a cold air intake you should start with one for the gen 2 since it would be easier to make, I would buy one from you for sure and i'm sure a lot of others who are looking for a true cold air would buy one as well.

driller said:

It would be interesting to see how that compared to actual IAT readings..

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The "red brick"/Snap On MT2500 will show you alot of active datastream with the EEC IV..the refresh rate "isn't the best" but it will show you IAT and ECT and STFT, MAF..and so on...

I ditched my C&L and went back to the stock air box and yesterday in 85 degree heat I had from 104-120 degree AIT when running in traffic.
Going down the road at hiway speed it got into the mid 90's (95-95ish).

driller said:

FWIW, when I did my CAI, I took the outside temp sensor and relocated it to the fenderwell right beside the air filter. I have tested the accuracy of the sensor and surmise it is within 5 degrees of actual temperature. I generally log the temperature reading each run down the track.

It generally shows 10 to 30 degrees above ambient air at the track. The hotter the ambient air, the larger the difference. I have seen it within 5 degrees of ambient temps on cooler days and as high as 40 degrees above ambient temps on the hottest days - depending upon how much cool-down time between runs I get.

It would be interesting to see how that compared to actual IAT readings.

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I doubt the outside air temp sensor can react fast enough to change to get the actual temperature as you are going down the track. Thermistors like that react slowly, you would need something that would give you something close to instantaneous reading.

steve said:

I doubt the outside air temp sensor can react fast enough to change to get the actual temperature as you are going down the track. Thermistors like that react slowly, you would need something that would give you something close to instantaneous reading.

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Is not the IAT sensor the same? Or at least the same type of sensor?

Actually they are similar but the IAT is more accurate. It is also sampled at a much faster rate (EEC) than the climate control processor could ever possibly could. But it still gives you an idea of what is going on. The newer vehicles have a better sensor. I've installed them within the air piping of after-coolers for people before so they could see how effective the cooler was.

driller said:

Is not the IAT sensor the same? Or at least the same type of sensor?

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That type of sensor could be engineered to react faster or what is know as a fast response thermistor. The IAT is more concerned with the ambient temperature for colds starts and then knowing when the engine warms up, it works in conjunction with the engine coolant temperature sensor.
The mass air sensor has to react fast, and that plays more into the a/f ratio.

Take the outside air temp sensor when it is cool outside like now and reading something like 60 deg, now hold it between you fingers or better yet take a blow dryer and heat it up and see how long it takes to react. You will be down the track by the time it acclimates to the temp change. It is engineering to be like that.