Aftermarket Intake Horsepower Guess Poll

[Sov13t]

I tend to agree with Ricochet on this one, I got an air intake for two reasons, one being the look it adds under the hood, and also the life span and quality of the filter. On the other hand, if you remove the under carriage (plastic cover sealing the right fender compartment) one can argue that the air temperature is going to decrease and the flow increase, thus perhaps being better than the stock air box.

As it has been stated over and over on this network, our cars are designed for luxurious/style aspect rather than speed. And then yet again, there are a few members on here that are pushing the limits of these cars and redefining their performance capabilities (talking about Toms, dynomatt, and a few others (sorry I fail to remember nicknames as easily as names)).

My two cents on this subject,
-Sov13t.

[nonSTOP_service]

Originally Posted by Sov13t

As it has been stated over and over on this network, our cars are designed for luxurious/style aspect rather than speed.

I hope you don't mind me pointing out that I believe the SVX holds great potential to be some kind of top speed demon. It's 3.3 litre engine yearns to be tapped to it's full potential.

I know it'd probably be a waste of money, but I could easily see someone tossing together a 200 mph SVX.

As for a + for the modified intake, I can personally say that when I placed my generic cone filter on my car (with the still stock piping) I noticed a definite increase in overall throttle sharpness. Really it's as sharp as I could expect an automatic car to be.

[shotgunslade]

The EG33 is a very attractive engine outside of our community. It has a long history as the powerplant for experimental aircraft, often in a turbo-charged application. We've seen posted some images of twin turbo drag race machines.

Jack Laverty at XX Tuning ins Ct. has been driving an NA EG33 Subaru RS coupe at NASA racing events for a couple of years. Check threads at Nasioc for pic's. I spoke with him at Watkins Glen last weekend, and he will be installing a full top end re-do over the winter. Ported and polished heads with a valve regrind and some pretty wild camshafts. Good-bye non-interference. He has ditched the entire ECU and is running a stand-alone system (non-smog legal). He also has a ram air intake system using a hood scoop. I've ridden in the car and it's pretty strong.

The EG33 is one of the best things about our car. For those of us with manual trans, the direct responsiveness and willingness to rev is very sweet. Through the efforts of old and young Tom, Lan, Bill, Kevin, Benebob, Hocrest, Huck,Todd and others, I think we're really beginning to see just how good this engine can be. Their efforts have added immeasurably to my pleasure at the track.

Dan

[nexus_7]

I need more $!

[TomsSVX]

Oh boy... thats gonna be a tricky jig

Tom

[shotgunslade]

I have been running the polished aluminum intake tube from Motorsports Warehouse for a couple of years now. While it uses the stock plastic divided connection to the throttle body intakes, it replaces the corrugated tube that runs between that connection and the MAF. There was a thread a couple of years ago discussing whether or not this corrugated tube caused any significant pressure drop in the intake path. I did a calculation that indicated that air velocity in this pipe would be very high, approaching 2000 fpm. TomsSVX did a GTech "Before" run prior to his intake cam/5MT install on my car that indicated 178 hp at 5600 rpm. While that was only GTech and not a real dyno, it suggests that the stock intake tube of the SVX offers significant opportunity for upgrade and horsepower improvement. Anybody who is worried about conduction heat gain thru the pipe can just wrap it in foil and foam ductwrap, just like I did to my intake tube.



Put me on the list for one of Kevin's new and improved models.

[TomsSVX]

well I believe the removal of the "air box" that connects the snorkus to the throttle bodies is the cause of the gain here. But thats just me. Dan, I will see when I can fit in making another one

Tom

[shotgunslade]

Tom:

I'm sure you are right that a lot of the pressure drop is in the "air box", but I also think that there is some drop in the snorkus, the removal of which may be why my stock engine was a little perkier than most.