im looking to buy the hks racing suction intake for my s5 turbo...
will i have to worry about intake temps over the stock airbox? i have a greddy front mount and getting rid of the stock intake plumbing would be nice

thanks

 

no, the intake's going to be hot anyway due to the turbo. it couldn't hurt to make a shield for it though.

 

what he said^^^^

for half the price you could just make your own intake from a 92-95 civic. just my $.02

 

A cold air intake is MUCH more important for a turbo vehicle. You want less heat AND denser air which in this case dense air is. The heat can lead to dentonation and such.

Go read up on this before posting misinformation.

 

Why not isolate the filter for making more power and staying away from dentonation?

Intake temps will RISE and you will acheive LESS horsepower.

 

that's why i said that he should make a shield for it. a cold air intake isn't going to help that much for a t2 because the turbo makes the air so much hotter. a cold air intake isn't going to make that much of a difference.

 

well if you pair the cold air intake with a good high efficiency designed IC you can gain some good temp drops. remember that even if pressurized air gets heated you will still gain some power if the turbo draws in cooler air. why do you think turbo cars respond so well to intake/ext. mods? but i wouldnt say that about VW/Audi/Porche turbo cars.... the cooler(in some cases the more) air the MAFT sees the less boost it runs so the ecu can run its fuel maps within its designated perameters

 

do this: get a good cold air intake, obviously they will be made of aluminum, shield the filter from the hot engine air as much as possible, and insulate the pipes for the intake and IC piping with some thermal coating or somethin homemade. my friend who has an FD took air temp reading of engine air, intake air( before turbo), and after the large stock-mount IC(i forgot how he fabbed up a temp sensor) and not including the temp drop from the IC already installed, but after he shielded his Blitz stainless filter and insulated his piping we noticed a drop of 10 degrees F when makin 10 pulls on the dyno with the hood closed. he made 332hp and 298lb-ft before this and had his PFC tuned a bit richer for the cooler air and made an extra 5hp and 2lb-ft using BNR stage 3 non-sequential with no-porting done. but this thread is about you. im just giving you an example. it couldnt hurt to try right?

 

It does make a difference. I beleive import tuner did a test on a 1995 B16A3 del Sol with the turbonetics turbo kit. They did a test with the filter in the engine and bay and another with it isloated. It was a 14 HP difference.

The lets say you have just a filter in the engine bay, it'll get heat soaked and (for example) its 100 degrees, lets say the turbo heats it up to 200 degrees. Thats a 200 degree amount of air coming into your engine. WITH IT ISOLATED it would be (for example) 50 degree's and bringing in COLDER and denser air, the turbo heats it up the same 100 degrees so its 150 degree intake temp. 50 degree difference. I was told that for every 10 degree's that the intake temp goes down you make 1 HP. I have no clue what the intake temps are for a rotary, but I do know the engine generates alot of heat (even moreso then a piston). So a colder intake charge is much more important.

Sucking in HOT engine bay temps results in a big loss of HP over the stock air box. ESPCIALLY with a turbo.

SO quit posting misinformation.

 

i guess i can see your point. didn't think of it in terms of numbers. you learn something new everyday. not exactly the most fun way of learning.