Actually, it should be the other way around. More CFM flow from the intercooler=more boost potential. Also, I don't see how the Viggen FMIC flowing at 1/2 the rate of even a stock WRX TMIC can possibly be a good solution when the WRX TMIC is aweful vs. larger TMIC's or good FMIC's. Then again, a Subaru engine is a Subaru engine and a Saab engine is a Saab engine...but CFM numbers shouldn't be any different regardless of the car right? I mean, people upgrading turbos to get say, 500CFM of flow aren't saying they'd rather have a turbo that has 340CFM flow...so does a larger intercooler flow more air under lower boost pressure. and if so does that explain why I was running 20lb with a small intercooler and now i can't push more 14lb with the larger one ( it's 2x the size ).
The '99 9-3's did have the crappy version except for the H.O.T.'s, they had the Viggen IC and a little more power. (8th place in the VIN is a P).The viggen IC is a normal single pass IC compared to the double pass IC found on the 900's (maybe the T5 9-3's had it too) as shown below. These are very restrictive and to upgrade to a used viggen IC and gain 10 HP is relativity inexpensive. I did this on my 900 back in the day. But yes, just about any aftermarket IC is better then the Viggen IC.
So are the TD04 based 9-3 SE's from 00-02 using the same IC as the Viggen or was the 99' year the only year that got the Viggen sized IC???The '99 9-3's did have the crappy version except for the H.O.T.'s, they had the Viggen IC and a little more power. (8th place in the VIN is a P).
The HOT 99 9-3 and all T7 9-3's got the Viggen IC. The SE and Viggen models got the TD04. Theres usually about a 10whp gain with an aftermarket IC compared to the Viggen style.So are the TD04 based 9-3 SE's from 00-02 using the same IC as the Viggen or was the 99' year the only year that got the Viggen sized IC???
Also, how much of an improvement are aftermarket ones such as Forge/ETS/etc. than the HOT/Viggen one OR, better put, at what HP level does one start to consider moving up to the Forge/ETS/etc. larger IC to notice the improvement?
This is interesting. So an upgraded FMIC is actually more apparent than a 3" Downpipe? I would think the DP would add quite a bit more power than a larger FMIC since it's extremely restrictive vs. an FMIC no?It'll be more apparent then the downpipe but not as apparent as the MBC+A setup.
Damn...so going with any aftermarket IC, be it the Forge/ETS/Ebay/etc. one, you gain 10WHP (not BHP, but WHP)??? Do you gain anything else such as better gas mileage?)) I'm all for making as good of gas as possible with my darn auto-tragic! Good thing about the auto-tragic is you can still gear shift with it (no, nothing like driving stick, but), and if gears break, well, a used auto-tragic is very easy to find and they seem to go for about $150 whenever I see them on the used. Not a bad investment for getting to have some play time every once in a while (I'm not a big fan of gear shifting the auto-tragic just fearing I'll kill it though it is way more fun since you obviously hit boost and redline very easily as you would using manual).The HOT 99 9-3 and all T7 9-3's got the Viggen IC. The SE and Viggen models got the TD04. Theres usually about a 10whp gain with an aftermarket IC compared to the Viggen style.
Thanks for the input. For T7 cars, would you still place the Exhaust/Rear muffler before the DP as an upgrade and what about the stock intake vs. a better one?If I had a T5 I would upgrade as follows:
3. Sport Exhaust (dump the rear muffler at the very least, heavy and restrictive)
4. 3" DP
5. ECU Tune
The main problem with the Viggen IC is heat soak. But it was a very noticeable upgrade from the two pass IC, in both performance and driveability. An after market IC is the way to go.
if you go on youtube theres a video of a guy who upgraded his 2001 -04 model 9-5 and it beats porsches and m3s and has a new paint job. anyways if you look at it you will see 4 big circle holes on his fron bumper so i think maybe it really is better to do that.Since it seems that its better to leave the stock viggen ic, would it be possible to drop the ic so that it is inline with the opening in the front bumper, or what about putting a curved piece of plastic under the ic to direct more air up onto it, or what about drilling a whole lot of holes in the front bumper to direct air straight onto the ic? Anyone tried any of these options?