A little info on intake temps for ya

[WhiteDevil]

I guess this is a tech item. I was doing a lot of air inlet temp data logs with my old anderson power pipe and now with my new C&L pipe. What i have noticed so far.

CAI do work. The air coming in from the fenderwell was almost always ambient outside temp air. When you come to a stop or are in stop and go it still heats up to the high 90s.

Underhood filter set ups arent that bad. When you begin moving and are going over say 30mph i get real close to ambient outside temps. Maybe 5-10 degrees warmer. So this morning it was 70 degrees out and i was seeing 80 whilemoving. The main difference is when stopped at a light or in stop and go traffic i was seeing inlet temps of 100-120 degrees!

LUckily for me when you race your moving so my inlet temps at WOT were right at 80 degrees. I dont need no CAI.

 

[urban96]

do you that that on a hotter day (90+) that the under hood temps would be more than the 30-40 degree difference your seeing?

 

[BlackVert]

then there is the issue/question about what happens with the air flow when the fan is blowing and if or how that affects the mass air meter readings ...

this may not exactly be air temp related, but it might be involved in the equasion when the filter is in the engine compartment ...

ot - i'd kill for 70* temps, we are seeing 90s here

 

[urban96]

then there is the issue/question about what happens with the air flow when the fan is blowing and if or how that affects the mass air meter readings ...

this may not exactly be air temp related, but it might be involved in the equasion when the filter is in the engine compartment ...

ot - i'd kill for 70* temps, we are seeing 90s here

ya 95 here today


if there is some fan wash causing turbulance a little shield can easily be fabbed up



on my uncles car we pulled off the air filter when it was at idle (maf attached right to the filter BTW) and as soon as the filter was off the idle went crazy and the car would barely run. put the filter back on and it idled great

 

[juiced_94gt]

you guys are weak...105* here in cali today and humid as hell

 

[Killercanary]

Wow... I've been data logging mine and after about 15 minutes of driving my intake temps are >120* This is with a jet hot coated Morpheous power pipe with a filter mounted in the inner fender. I was shocked to see it get so high. Under WOT it'll drop to the 105* range but there it stays and creeps back up very quickly. I'm concidering wrapping it or something while cruising/racing and removing the wrap at shows.

 

[BlackVert]

paul, is your sensor in the intake tubing or the runner on the lower intake?

also, are your headers coated? i have always wondered how much (if at all) coating the headers helped ...

 

[final5-0]

I wanted my meter in the fender

That dad gum ProM 80 is so honkin big

I could not fit it in there with out doing some bends
and
Bends ... They were not in my plans

I was able to get a part of the meter in the cool

Grady

 

[WhiteDevil]

paul, is your sensor in the intake tubing or the runner on the lower intake?

Yeah good question. I think i see it in killers sig pic and that is the same spot mine is mounted on the C&L pipe. On the Anderson power pipe it was located in the fenderwell with my MAF.

 

[HISSIN50]

Excellent thread!

It's not here nor there but with a chrome fender drawn CAI, I've seen IAT readings higher than ECT readings at operating temp (IAT readings over 200*F). This was in 115*F ambient temps - you would just watch the waves of heat rippling off of the late-afternoon asphalt. I almost lost skin touching the CAI.

Please note this was all checked at Idle (where one would surmise there is a relative stagnation of air and more chance of heat soak).

 

[final5-0]

Here is an old datalog file done on a day that was 98 degrees.

I had been sitting on the side of the road for a short while
before doing a 3rd gear WOT blast with the capture clicked on
at around 2K and off around 5K

The screen shot only allows you to see up to 4300 rpm

Final speed was just shy of 80 mph and the act temp did not
drop any lower than the 100 degree temp you can see

btw ... I was running my home made cai I've shown before

Grady

 

[Killercanary]

paul, is your sensor in the intake tubing or the runner on the lower intake?

also, are your headers coated? i have always wondered how much (if at all) coating the headers helped ...

Its in the tubing between the air filter (I almost said MAF but I don't run one anymore ) and the TB as shown in the pic in my sig. My headers are standard FMS stainless steel that I coated with eastwood's high temp powdercoat. I'm actually really surprised at how well the coating has held up as it looks just like it did the day I put them on and I have over 800 miles on them, and a lot of those have been HARD miles lately. LOL! I also have a heat extractor hood which I'm sure helps some as I can see heat waves coming out of it when I'm not moving and when the fan kicks on I can feel air coming out of them. They are located in a low pressure area of the hood when the car is moving too which should help, but the pipe still gets heat soaked pretty bad. I want to try icing it down to see how low I can get the temps to get.

 

[WhiteDevil]

Oh Paul what have the temps been like out there when your logging? Here in San diego its been a nice perfect cloudless 70-75 degrees out.

 

[zenboy99]

Grady, I got my ProM 80 MAF in the fenderwell with a 8" filter and AFM power pipe, real tight fit but its nice.

I'm seeing the same intake temps. When I had a 12" air filter in the engine bay with a shield, I would see 135 degrees idling! That was so hot that the computer started running the car richer! I "Tweeced" that out though.

 

[Killercanary]

Oh Paul what have the temps been like out there when your logging? Here in San diego its been a nice perfect cloudless 70-75 degrees out.

Its been hot as hell here lately, but the last two days I logged were in the mid to upper 80's. I'm hoping to take the car out today for a little bit, but its closer to 90* today!