Smitter

i am running the pettit coolcharge III SMIC with a 60-1 garrett and will see intake temps 5-10 degrees above amibient. Correct me if i am wrong but thats pretty damn low.
my intake filter piping is ran underneath my sleek headlight and the filter sits in the front bumper oil cooler opening on the passenger side of the car. You must agree that its a benifit to get the intake out of the engine bay, otherwise the filter sits directly behind the rad which is dumping heat.

Comparing my intakes temps with a friend with the same turbo & intercooler side by side at a redlight(his intake filter is in the engine bay behind the rad) my intake temps were 14 degrees cooler. That will yield alot of extra power. Filter placement is the contributing factor the difference in intake temps.

The first pic shows the intake pipe leading under the light, the second shows the piping with the headlight removed, the third shows the intake filter behind the mesh screen in the right side oil cooler opening in the bumper. Works slick

What do u guys think?

arghx

iTrader: (3)

5-10 degrees above ambient during the summer? in C or F? I honestly would double check the sensor if it is in the stock location under the UIM. I have had water temperature sensors (for the ECU) read like 20-30 degrees too cold. I'm sure the filter placement helps, but if that IAT sensor isn't reading correctly your mixture will be rich under some conditions and the ECU won't pull timing due to high charge temps when it should.

Smitter

pretty sure the temp sensor is working correctly, the filter placement helps a tonne, logic will tell anybody that. on average the IATs are about 10 celcius above ambient. doesnt matter what time of year, spring summer, fall.
the temps will heat soak to about 55-60c while parked, but some moderate throttle cruising will bring them back down to 35-40c in about 10minutes when abient is 25-30c. of course drving in stop and go traffic the intake is way less efficient.

The car doesnt run rich at all, a big power difference can be noticed between 35-45c IATs aswell. To notice a 14c difference between a car with same turbo and IC with filter in engine bay is definetly attainable IMO.

fritts

iTrader: (5)

I really don't know why people worry about casual driving air temps, unless you are over heating. The temperature you need to worry about is the one at WOT when your IC setup is actually doing the work. If your still using your stock sensor it will never show the true temperature due to its closed element type. Take a look at your max temperatures during a WOT run.

https://www.rx7club.com/showthread.p...&highlight=ait

Smitter

regardless of all the technical aspects and the slow reading stock sensor, the intake temps would have to be lower when they have a lower base/starting temperature. Are u trying to say that no matter where the filter is located it will have no bearing on the AIT? should i just scrap this set-up and mount my filter on the turbo inlet? Why do companys even make cold air intakes then?
I can feel the power difference by monitoring my temps although it is with the stock sensor, thats enough proof that it works to satisfy me

fritts

iTrader: (5)

I said nothing about lower AIT's not resulting in more power. Of course they do. It still does not change the fact that the major impact in making power from cooler charge air temperatures comes during WOT not what you see during casual driving.

Smitter

i agree with that 100% and i also believe that a lower starting temp will result in lower AITs whether light throttle driving or WOT runs.

shawnk

Smitter - I'm not sure why your post inspired any debate what-so-ever. Maybe its your "correct me if I'm wrong" statement that whipped the contrary people into a posting frenzy (even though youre not wrong).

Your intake location is the best that it can be. It looks great, you did it the right way, and it is a functional as an intake can be. I have always wanted to do a similar setup but my sleek lights seem to go a bit deeper than yours and my turbo inlet is 4". I also have a 2nd oil cooler under there taking up some space. I relocated the coolant reservoir to the windshield washer reservoir location to clear out some space. I think I am going to have to bring the cold air to the turbo rather than putting the filter out in the cold air. This project has been on my list for sometime and I will certainly get it done before the next time I do a HPDE in the summer as that is the only time I have ever had temp problems.

As for the other points being raised I do agree at least with moving your AIT sensor to the cool side of the intercooler piping. I'd rather the ECU think the air was cooler than it actually is when it hits the combustion chamber than the other way around. Of course it will require a slight re-tune after moving it.

Good job.

Smitter

^^Hey thanks for the Reply. Finally some one who likes my setup (always lots of haters on here)
I honestly believe that the filter location is in the best spot it could be aswell, i always hated the fact that the fd intake is normally right behind the radiator, and there is no room to get around it.
i can touch my intake piping after some spirited driving and it is as cool to the touch as the cold side IC piping. it is truly is an amazing setup

My turbo inlet is only 3" which allows me to run the pipe through the opening of the headlight housing but it is a tight fit.
I am in the process of upgrading the lhd side oil cooler to a much larger model to help with the oil cooling. i am refraining from adding a dual set-up because of the air filter location. i dont wanna heat soak the air filter with the second oil cooler.

Are guys just relocating there stock AIT sensors, or is there an aftermarket Air temp gauge available?
thx again

gracer7-rx7

iTrader: (16)

Awesome setup. It was great that you were able to compare with another FD that had the same setup as it prooves that the CAI helps a lot. Cooler pre IC air will = cooler post IC air.

You usually only see temps like that when using a Vmount.

arghx

iTrader: (3)

I don't understand how questioning the stock IAT sensor was interpreted as a personal attack...

Smitter

^^ it was not taken as a personal attack, no hard feelings on my end. It is no secret that the stock sensor reads slow, but to call it inacurrate by up to 30 degress, thats a little extreme. even if it was though it will always give a good reference point. if AIT were reading 150 degrees while in stop and go, but were lowered to 130 degrees while driving, u know that temps are decreasing, and if the gauge reading isnt enough to convince u of that, the power difference definetly would.

when a single turbo setup identical to mine AITs vary from 40-60c, and my car sees intake temps from 30-45c i know my intake location is the reason