You hit the nail on the head! Air inlet temperatures will be higher.

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1998 STX 4.2L V6 Auto

 

I can't speak to specific air temps, I don't have the equipment for that kind of testing.
Here in Houston, hot humid air exists all around us and we HP freaks are fighting it all the time.

I can say that the increased air flow through the system certainly does wake up the SC and increase boost at lower RPM. It even seems to help the low end torque by spooling up much quicker than with the stock restricted air box.

There also may be a cooling effect by the increased velocity of air traveling through the intake.

In any case, my truck really liked it when I put Sal's Powerstack filter assy on it.

Just a couple of thoughts on the subject....



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Chuck 'Wyldman' Shelton
Black 99.5 Lightning
Lojack
Superchipped!
G-Tech/Pro
SnugLid
BedRug
Invinca-Shield, full kit.
NOS KIT Delivered - that RT is gonna wish he never sandbagged me!
Clear Lexan fog light covers

 

Hey guys, Sal here. When I tested the prototype filter set up, I did indeed measure air intake temperature. At idle, the the temperature at the #1 Intake Air Temperature sensor, located in the airbox, showed identical temperatures between the stock airbox and the PSP filter kit. While driving, I saw a decrease in air temperature with the PSP kit installed, of an average of 10 degrees. Alot of people talk about "underhood" temperatures having negative effects on performance when ingested into the motor. I have done quite a bit of testing on this subject, and using temperature thermocouplers I found that unless your filter is within 1 foot of the exhuast, the underhood temps were just about ambient. Hope this helps!!

SAL

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Power Surge Performance--- Your SOURCE for SVT Lightning EFI Tuning and Performance!!
http://members.aol.com/NLOCsvt/svt.html

 

Hey Sal, JimmyJoe here. You say, "Alot of people talk about 'underhood' temperatures having negative effects on performance when ingested into the motor. I have done quite a bit of testing on this subject, and using temperature thermocouplers I found that unless your filter is within 1 foot of the exhuast, the underhood temps were just about ambient". Interesting comment. I think you live somewhere on the East Coast, right? It gets pretty hot there are times, maybe even approaching 100 degrees. It's pretty flat there too. Have you been to Baker Hill in California or Death Valley to test your inlet temperatures? Underhood "ambient" temperatures are around 250 degrees out there! Sucking that hot air into an engine will definitely result in poor performance because the computer pulls out a bunch of spark (thats the "real" job of the knock sensor that people on this board have been calling the "superchip already in your computer"). What may work in the east may be unacceptable elsewhere in the country. Do you think Ford (and others) suck air outside of the engine compartment for no reason at all? Auto companies do things for a reason, usually for a very good reason. In mild climates, on cool days, sucking underhood air may not have a detrimental effect on performance. Take your air inlet, on a hot day with the A/C on, climbing a grade with a trailer behind you and I think you will see the logic of sucking air outside of the engine compartment (when you lose about 25hp for all the timing the computer pulls out so the engine won't ping itself to death).

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Jimmy Joe Jeter
1978 F250 4x4 - 460 V8
American and proud of it!

 

I guess you have never seen all of the aftermarket conical air filters that attach directly to the front of a throttle body. There's no external ducting at all, and the filters extend directly out from the throttle body itself. Or, how about the old carb setups that drew air from around the filter cover?

 

What he is saying is that underhood temps match outside air (ambient) temp unless near the exhaust. Idling I question that but, in motion it seems possible. And, the ones that have installed it are seeing an improvement, which is what really counts...Aw *****, ain't you Billy Bobs cousin? Got me.

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Red 99.5 Lightning,#0975,Born 5/6/99...Adopted 5/27/99 Chipped w/SuperChip Flipchip chip, Mobil 1


[This message has been edited by 4D THNDR (edited 09-29-1999).]

 

After looking at the pictures of the Power Surge intake system I find myself questioning whether the air charge will really be as cool as a stock unit, since most of the air will flow into the greater surface area in the engine compartment vs. the end of the filter. Obviously the total air flow would be greater (a plus) but the average temperature of the air charge may not be as cool.

Comments?

JamieZ, One Lap of America, Team Lex-AZ, '99 Lightning in the barn