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Old 10-21-2001, 10:16 PM   #1
AutoNthusd
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Default Blitz SUS or CAI? Need Help!

I know this debate has been rehashed several times but I am having a hard time deciding between the Blitz filter or something like the Injen CAI. I am looking for modest power gains and better sound. What scares me about the CAI is the potential for water ingestion. I have heard that the Blitz stainless filter does not filter that well, however I rarely keep a vehicle beyond 50-60K miles, so that to me is not a huge concern. I have also heard conflicting opinions as to whether a turbo engine benefits more from a CAI and the longer piping, or a short pod style filter eventhough it sucks in hotter air. Anyone care to share their opinions and any hard numbers?

Ed
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Old 10-21-2001, 10:26 PM   #2
Mr.WRX2002
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You should also consider exactly how loud you want your intake to be. I am thinking about selling my Injen intake because it is way to loud for my tastes. It is hard to drive in stealth mode with an intake screaming between 2500 and 3500 rpms.
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Old 10-22-2001, 12:30 AM   #3
TerenceT
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turbo needs air, more air = better
cold air is denser than hot air

with that in mine, let's see...

short arm with hot intake = better than stock

long arm with cold air = better than hot air

another thing on is short arm intake is that the arm itself gets heated up A LOT. on top of that you are sucking the hot engine air back in.

cold air with long arm would create more turbulance in the arm, however, it's freash air, and cold air, making it denser. also the cold incoming air would cool the arm back down... given, the arm inside the engine is hot and it'll counter the cold air but my personal believe is, it'll still be colder then short arm hence better.
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Old 10-22-2001, 12:57 AM   #4
datdudedennis
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actually terrance, its not that simple.

denser=more 02
short ram=more air flow than a cai but which is really yielding more 02? see if you think about it, its kind of hard.

a cai will get cooler air to the engine but man, its a turbo engine, the air gets hot again anyways, the temp. difference b/t the cai and shortram by the time the engine gets it is probably only a few degrees. i honestly think a short ram is better, i've heard my friends wrx with an injen and its nice, the bov is the best part. im thinkng about getting it just for the noise. mr.2002wrx, if you sell the cai let me know.

dennis
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Old 10-22-2001, 01:38 AM   #5
BADWRX
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Blitz LM FMIC is a great mod. In Japan, there are like not too many CAI's on Turbo Cars. In fact, to my knowledge, there are none.

The CAI concept is useless on Turbo cars.

I love the Blitz...Spool up is much improved and it just sounds awesome!

Andy
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Old 10-22-2001, 09:14 PM   #6
TerenceT
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Quote:
Originally posted by datdudedennis
actually terrance, its not that simple.

denser=more 02
short ram=more air flow than a cai but which is really yielding more 02? see if you think about it, its kind of hard.

dennis
this is what i don't get, airflow is constant supposely because the long arm ingen is mendrel bented, the velocity of the incoming air is the same at the filter or at the arm in the engine bay.

Assuming the engine air temp is around 120F
and if you are sucking ambient air at 80F, by the time the 80F air got heated up, it should still be lower than 120F

a friend of mine did a test on his Audi, now Audi only has short arm intake, and his test is based solely on intake air temp. first he installed the intake, the IAT is the same as the engine; However, he took his head light out, hence giving the intake pretty much direct freash air from the front and the IAT was lower by 10F IIRC.

by the same theory, if you can get colder air into the intake, it should be colder/denser?

any thoughts?
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